Mt6789 Auth Bypass Better Free

MT6789 Auth Bypass: A Better Approach to MediaTek Security Research

The MediaTek MT6789 chipset (marketed as the Helio G99) is a powerhouse in the mid-range smartphone market. While its performance is impressive, it has become a focal point for security researchers and enthusiasts looking to bypass the BootROM (BROM) protection—commonly known as "Auth Bypass."

If you’ve struggled with generic tools or outdated scripts, here is a look at a better, more reliable way to handle the MT6789 auth bypass. Why "Auth Bypass" is Necessary

Modern MediaTek chips use a secure handshake protocol. When you try to flash firmware or read data via the SP Flash Tool, the chip demands an authorized connection. Without a proprietary "DA" (Download Agent) file or an authorized service account, you’re locked out.

An Auth Bypass exploits vulnerabilities in the BROM to disable this requirement, allowing you to: Unbrick "dead" devices. Bypass FRP (Factory Reset Protection).

Flash custom ROMs or partitions without official authorization. The Problem with Old Methods

Many tutorials point users toward the original mtk_bypass python scripts. While revolutionary at the time, they often lack the specific payloads and SLA/DAA skipping logic required for the MT6789's updated architecture. Using the wrong tool often results in "Status Brom MediaTek" errors or, worse, a temporary device hang. A Better Way: The Modern MT6789 Workflow

To achieve a stable bypass on the Helio G99, the community has shifted toward more integrated solutions. 1. LibUSB Filter Driver (The Foundation)

A "better" bypass starts with the driver. You must use LibUSB-Win32 to "filter" the MediaTek USB Port while the device is in VCOM mode. This ensures that the bypass tool can intercept the communication before the Windows default driver takes over. 2. Using Updated Payloads

The MT6789 requires a specific exploit strategy to disable the SLA (Secure Lib Authentication). Look for tools that specifically mention MT6789 support (like the latest MTK Meta Utility or updated versions of the Kamakiri-based scripts). These versions include the correct register offsets to "trick" the BROM into thinking the authentication was successful. 3. The "No-Auth" DA Approach

The most efficient way to work with the MT6789 today is using a Custom DA. Instead of relying purely on a python script to hold the bypass open, a custom Download Agent is patched to ignore the security check entirely. Step-by-Step Breakdown

Force BROM Mode: On most MT6789 devices, this involves holding Volume Up + Volume Down while plugging in the USB cable.

Run the Bypass: Execute your bypass tool. You are looking for the magic string: Protection disabled.

Flash without Authentication: Once the bypass is active, open your flashing tool. In the settings, ensure "Check LIB" or "Verify Authentication" is unchecked.

Select MT6789 Scatter: Use the correct scatter file for your specific device to avoid partition mismatch. Safety Warning

Messing with the BROM of an MT6789 device carries risks. Always ensure your device battery is charged to at least 50%. If the device becomes unresponsive during the bypass, a battery pull (or holding all buttons for 15 seconds) is usually required to reset the preloader. The Bottom Line

The "better" way to handle MT6789 auth bypass isn't just about finding a one-click button; it’s about using modern drivers and chip-specific payloads. As MediaTek patches these vulnerabilities in newer security updates, staying updated with the latest GitHub repositories for MTK security is essential for any successful repair or modification.

MT6789 Auth Bypass Better: A Complete Guide to Unlocking Success

Bypassing authentication on MediaTek (MTK) chipsets has long been the "holy grail" for enthusiasts looking to unbrick, root, or flash custom firmware on their devices. For those working with the MT6789 (Helio G99), the landscape is slightly more complex than older chips.

To achieve a "better" result—meaning a stable, safer, and more reliable bypass—you need to understand the shift from older BootROM (BROM) exploits to the modern Preloader-based methods required for V6 chipsets. Why the MT6789 Is Different

The MT6789 belongs to the MediaTek V6 protocol family. Unlike older MTK chips (V5) where the kamakiri exploit could easily bypass security in BROM mode, the MT6789 has a patched BROM.

Trying to use old "one-click" tools designed for legacy chips often leads to errors like "SLA/DAA Authentication Required." For a better bypass, you must use tools that support the heapbait and carbonara exploits, which target the Preloader mode rather than BROM. Top Tools for a Better MT6789 Auth Bypass

To ensure the highest success rate, skip the generic "cracked" software and use actively maintained utilities:

MTKClient (by bkerler): The gold standard for modern MTK devices. It supports the MT6789 specifically using the --loader option to point toward V6-compatible loaders.

UnlockTool: A premium, frequently updated professional service tool that specifically lists support for MT6789 bootloader unlocking and RPMB operations.

Pandora Tool: A powerful hardware-box-based solution (Pandora 6.0+) that added dedicated support for Helio G99 (MT6789) in Preloader mode. Step-by-Step: Achieving a Better Bypass

For the most reliable results using free utilities like MTKClient, follow these "best practice" steps:

Prepare the Environment: Install Python (64-bit) and add it to your System PATH. Install the required filter drivers (typically UsbDk) to allow the software to intercept the USB handshake.

Use Preloader Mode: For MT6789, do not hold hardware buttons while connecting. Simply plug the device into the PC. If the Preloader is deactivated, you may need to use a command like adb reboot edl if the phone still boots.

Specify the V6 Loader: A generic "bypass" command won't work. You must use the --loader flag to point to the correct DA (Download Agent) file from the Loaders/V6 directory of your tool.

Execute the Bypass: Run the utility (e.g., python mtk payload-bypass). Once you see "Protection disabled," you can safely use the SP Flash Tool in UART mode to flash your firmware. Benefits of Successful Bypass

Unbricking: Recover "dead" phones that won't turn on or are stuck in a boot loop.

Customization: Unlock the bootloader to install custom ROMs or TWRP.

Maintenance: Read and write sensitive partitions like RPMB or repair IMEI information for legitimate recovery purposes. Safety First

While bypassing authentication is a "glimmer of hope" for many, it carries risks. Always backup your partitions (especially NVRAM and UserData) before attempting a bypass. Working with the MT6789 requires precision; using the wrong loader or flashing the wrong preloader file can permanently "brick" the device beyond the reach of software-only fixes. Question: Is the security enabled mt6789 problem solved #86

The hum of the server room was a steady, low-frequency vibration that Elias felt in his marrow. On his workbench sat a bricked Vivo handset, its screen a void of black glass. For three days, it had been a paperweight, guarded by the invisible digital fortress of the MediaTek MT6789—better known to the world as the Helio G99.

In the underground circles of mobile forensics, the MT6789 was becoming a legend for the wrong reasons. The old "DA" (Download Agent) exploits that had cracked open previous generations were failing. MediaTek had tightened the screws on the Boot ROM (BROM), making the Secure Boot handshake feel less like a door and more like a bank vault. mt6789 auth bypass better

"You’re overthinking the hardware," a voice crackled over his headset. It was 'Kael,' a dev located three time zones away, currently staring at the same hex dumps. "The MT6789 doesn't just need an exploit; it needs a symphony. If you want a better bypass, stop trying to kick the door down. Convince the door it’s already open."

Elias leaned back, rubbing his eyes. Most scripts circulating on GitHub were messy. They relied on crashing the USB stack—a "race condition" that worked maybe one out of ten times. It was unreliable, prone to hard-bricking, and frankly, amateur. He wanted something cleaner. A Better Auth Bypass.

He began by mapping the BootROM communication protocol. When the Helio G99 is plugged into a PC in a powered-off state, it waits for a specific sequence of "handshakes" via the VCOM port. The standard bypass used a primitive pwned DRP (Data Resource Plot) to trick the chip into skipping the signature check.

Elias started rewriting the Python payload. Instead of a blunt-force crash, he targeted the usb_endpoint_request handling. He found a tiny, overlooked vulnerability in how the MT6789 handled large packets during the initial GET_DESCRIPTOR request. If he could overflow a specific buffer in the chip's SRAM, he wouldn't just crash it—he could redirect the instruction pointer to a custom piece of code he’d written.

Hours bled into the AM. The code was lean, stripped of the bloated libraries found in older tools. He called it Aether-G99. "Ready?" Elias whispered to the empty room.

He held the Volume Up and Down buttons—the "Force BROM" combo—and slid the USB-C cable into the port.

Title: Uncovering the MT6789 Authentication Bypass: A Deep Dive

Introduction

The MT6789 is a popular system-on-chip (SoC) used in a wide range of devices, from smartphones to smart home appliances. However, like any complex piece of technology, it's not immune to vulnerabilities. Recently, a significant authentication bypass vulnerability was discovered in the MT6789, sending shockwaves through the cybersecurity community. In this blog post, we'll take a closer look at the MT6789 authentication bypass, exploring its implications, how it works, and what you can do to protect yourself.

What is the MT6789 Authentication Bypass?

The MT6789 authentication bypass is a type of vulnerability that allows an attacker to bypass the normal authentication mechanisms of a device, gaining unauthorized access to sensitive data and functionality. This vulnerability is particularly concerning, as it can be exploited remotely, without requiring physical access to the device.

How Does the MT6789 Authentication Bypass Work?

The MT6789 authentication bypass takes advantage of a weakness in the SoC's authentication protocol. Specifically, the vulnerability allows an attacker to manipulate the authentication tokens used to verify the identity of users. By exploiting this weakness, an attacker can create forged tokens, effectively tricking the device into granting them access to restricted areas.

Technical Details

For those interested in a more technical explanation, the MT6789 authentication bypass centers around the use of a predictable token generator. The SoC uses a token generator to create unique authentication tokens for each user. However, due to a flaw in the implementation, these tokens can be predicted and forged by an attacker.

Here's a high-level overview of the exploit:

  1. Token generation: The device generates an authentication token using a predictable algorithm.
  2. Token manipulation: An attacker manipulates the token generator to produce a forged token.
  3. Authentication bypass: The forged token is used to authenticate to the device, bypassing normal authentication mechanisms.

Implications and Risks

The MT6789 authentication bypass has significant implications for device manufacturers, users, and the broader cybersecurity community. Some potential risks include:

  • Unauthorized access: An attacker could use the authentication bypass to gain access to sensitive data, such as user credentials, financial information, or personal data.
  • Malware propagation: The vulnerability could be exploited to spread malware, allowing an attacker to take control of a device or use it as a jumping-off point for further attacks.
  • Lateral movement: An attacker could use the authentication bypass to move laterally within a network, accessing multiple devices and exploiting other vulnerabilities.

Protecting Yourself

If you're a device manufacturer or user, there are steps you can take to protect yourself:

  • Patch and update: Ensure that your device is running the latest firmware and software updates. Manufacturers should prioritize patching the MT6789 authentication bypass vulnerability.
  • Implement additional security measures: Consider implementing additional security measures, such as two-factor authentication, to reduce the risk of unauthorized access.
  • Monitor for suspicious activity: Keep an eye out for suspicious activity on your device or network, and report any concerns to the manufacturer or a cybersecurity professional.

Conclusion

The MT6789 authentication bypass is a significant vulnerability that highlights the importance of robust security measures in device design and implementation. By understanding the technical details of the exploit and taking proactive steps to protect yourself, you can help mitigate the risks associated with this vulnerability. As the cybersecurity landscape continues to evolve, it's essential to stay informed and vigilant, ensuring the security and integrity of devices and data.

Recommendations

  • Device manufacturers:
    • Prioritize patching the MT6789 authentication bypass vulnerability.
    • Implement additional security measures, such as two-factor authentication.
  • Users:
    • Ensure that your device is running the latest firmware and software updates.
    • Monitor for suspicious activity on your device or network.

Resources

For more information on the MT6789 authentication bypass, we recommend checking out the following resources:

  • [CVE details]
  • [Vendor advisories]
  • [Cybersecurity blogs and research papers]

By staying informed and proactive, we can work together to create a more secure and resilient cybersecurity landscape.

"Mt6789 auth bypass better" refers to advanced, often automated methods for bypassing BootROM security on the MediaTek Helio G99 chipset to enable low-level firmware operations. Effective techniques involve payload injection during BROM state to disable Serial Link Authentication (SLA) and Download Agent Authentication (DAA), with tools like MTK Client and UnlockTool favored for stability and ease of use. AI responses may include mistakes. Learn more

Report Title: Pre-Authentication Exploitation via Bootrom USB Enumeration on MediaTek MT6789 (Auth Bypass) Affected Component: Preloader / Bootrom USB Handshake (SLA & DAA) Firmware Version: Any prior to vendor patch MT6789_Security_Update_2025_01

Unlocking the Potential: Why the MT6789 Auth Bypass Just Got a Whole Lot Better

For anyone entrenched in the MediaTek repair and unbricking scene, the MT6789 chipset has been a bit of a "final boss" over the last year. Found in popular mid-range devices like the Infinix Note 30 and Tecno Pova 5, this chipset introduced stricter security protocols that made the once-simple task of authentication bypass a headache.

If you’ve been struggling with "Brom Error," handshake failures, or the infamous "Protected" errors, I have good news. The landscape has shifted. The latest tools and methods for MT6789 auth bypass are significantly better, faster, and more reliable.

Here is a breakdown of what changed, why the old methods failed, and how the new approach saves time (and sanity).

6. Conclusion

The MT6789 authentication bypass demonstrates a classic low-level race condition in embedded USB stacks. While physical access is required, the ease of exploitation and complete security bypass makes this a critical finding for any device using this SoC without the January 2025 patch.

Recommended next steps for security teams:

  • Scan production devices using adb shell getprop ro.boot.verifiedbootstate – if orange, device is vulnerable.
  • Block USB preloader mode via kernel config CONFIG_MTK_PRELOADER_USB=n if not needed.
  • Enforce hardware-backed attestation (Play Integrity / Keymaster) to detect modified boot state.

Report prepared for internal red team use. Do not share with unauthorized parties. Tested on Xiaomi Poco M5 (MT6789) with firmware V14.0.3.0.TGSEUXM.

The MT6789 (Helio G99) chipset uses MediaTek’s V6 security protocol, which features a patched BootROM that effectively blocks older exploits like kamakiri. Bypassing the authentication (SLA/DAA) on these devices requires updated methods that target the preloader or use specific DA (Download Agent) loaders. Key Methods for MT6789 Auth Bypass

The "better" or more modern approach to bypassing MT6789 involves moving away from standard BROM-mode exploits and using tools that support V6-specific protocols. MT6789 Auth Bypass: A Better Approach to MediaTek

MTKClient (Advanced/Manual): The most reliable open-source method. It now supports heapbait and carbonara exploits, which can bypass security if a valid DA loader (often found in stock firmware) is used.

Usage: You must use the --loader flag and point to a proper loader from the Loaders/V6 directory.

Mode: Standard BROM mode often won't work; you typically need to use Preloader mode by connecting the device without pressing any hardware buttons.

Professional Servicing Tools: For a more automated "one-click" experience, commercial tools like UnlockTool and TSM Tool Pro have added specific support for MT6789. These are often preferred for tasks like: Unlocking the Bootloader. Reading/Writing RPMB. Removing FRP or Factory Resetting. Why MT6789 Bypass is Different

Patched BootROM: Unlike older chips (MT6765, etc.), the MT6789's BootROM is resistant to common older bypass utilities.

Preloader Dependence: Most successful bypasses now happen through the Preloader interface rather than the raw BROM.

DA Requirements: A signed Download Agent (DA) from the OEM is usually necessary to facilitate the connection for flashing or unbricking. General Requirements To use these bypass methods, you generally need:

Drivers: LibUSB or UsbDk filters are required for Windows users to allow the tools to "catch" the device during its brief boot-up phase.

Python Environment: For tools like MTKClient or generic bypass utilities, you'll need Python installed with pyusb and pyserial dependencies. Question: Is the security enabled mt6789 problem solved #86

The MT6789 (Helio G99) chipset belongs to MediaTek's V6 protocol generation, which introduced significant security enhancements that make traditional "one-click" authentication (auth) bypass methods more difficult than on older chips. Current State of MT6789 Auth Bypass

Unlike older MTK chips (V5 and below) that were vulnerable to the kamakiri exploit, the MT6789 has a patched BootROM.

BROM vs. Preloader: Traditional BootROM (BROM) exploits are generally ineffective on these patched devices. Most successful interactions now occur in Preloader mode.

Modern Exploits: Open-source tools like MTKClient on GitHub have evolved to support newer exploits such as heapbait and carbonara (DA1/2). Requirements: To bypass auth on MT6789, you typically need:

A valid Download Agent (DA) file specific to your OEM (e.g., Oppo, Realme, Infinix).

A tool that supports the V6 protocol, such as MTKClient or professional tools like UnlockTool. Top Tools and Methods

For the "better" or more reliable bypass experience on MT6789, researchers and technicians use the following: Method/Tool Note on MT6789 (V6) Support MTKClient Open Source (Python)

Supports V6 chipsets using the --loader option with specific DA files from the Loaders/V6 directory. UnlockTool Professional (Paid)

Frequently cited for successful bootloader unlocking and RPMB operations on MT6789 devices like Oppo and Tecno. TSM Tool Pro Professional (Paid)

Offers support for various MTK V6 models, including specific Honor and Samsung patches. MTK-bypass Utility Open Source

A common utility used to disable "Protection" before using SP Flash Tool, though it may require specific payloads for V6. Practical Execution Steps (General)

If using open-source utilities like those described on XDA-Developers, the process generally involves:

Driver Setup: Installing libusb or UsbDk filter drivers to intercept the USB connection.

Environment: Installing Python and dependencies like pyusb and pyserial.

Connection: Connecting the device in Preloader mode (often by simply plugging it in without pressing hardware buttons).

Execution: Running the bypass utility to see a "Protection disabled" message before proceeding with flashing tools like SP Flash Tool.

Important Note: Because MT6789 is a secure V6 device, the phone will often power off the moment it is disconnected from the PC after an exploit is run. Any flashing must be done in a single session without disconnecting. Question: Is the security enabled mt6789 problem solved #86

Bypassing the authentication for the MediaTek MT6789 (Helio G99) is more complex than older chips because it belongs to the "MTK V6" security architecture, which is patched against older exploits like kamakiri2. To get it working "better," you need to use tools that support modern exploits like Carbonara or Heapbait. 1. Recommended Free Tool: MTKClient

The mtkclient utility is the industry standard for open-source bypass.

Key Advantage: It now supports Carbonara (DA1/2) and Heapbait exploits, which are essential for secure V6 devices like the MT6789. Requirements:

Python: Install the 64-bit version and ensure you select "Add Python to PATH".

Drivers: Windows users must install UsbDk (64-bit) or a libusb-based filter driver to intercept the connection. Setup: Install dependencies: pip install pyusb pyserial json5.

Use a Patched DA (Download Agent): Look for MTK_DA_V6.bin or a specific patched DA for the Helio G99 chipset to bypass DAA (Download Agent Authentication).

Command Tip: If the GUI crashes, use the Command Line Interface (CLI). For example: python mtk.py multi "r preloader..." often works when the GUI fails on MT6789. 2. High-Success Paid Alternatives

If free tools fail due to manufacturer-specific security (like on newer Oppo, Realme, or Tecno devices), professional service tools are often more stable. Question: Is the security enabled mt6789 problem solved #86

(Helio G99) chipset uses a newer security protocol called , which features a patched Bootrom that is resistant to older "kamakiri" exploits typically used for authentication bypass. To achieve a better or more reliable bypass for this specific chip, you must use tools and methods that support V6 loaders Preloader mode Recommended Tools and Methods

For a reliable "better" bypass on MT6789, the following tools are current standards as of April 2026: MTKClient (Best Open-Source Option) Token generation : The device generates an authentication

: This is the most frequently updated utility for MediaTek exploitation. Specific for MT6789 : You cannot use standard Bootrom (BROM) mode. Instead, use Preloader mode

by connecting the device without holding any hardware buttons. : You must use the option with a specific file from the Loaders/V6 directory within the MTKClient GitHub repository UnlockTool (Premium/Professional)

: Often considered "better" for beginners because of its GUI and built-in support for V6 chips like the Helio G99. It supports operations like RPMB reading/writing bootloader unlocking

specifically for MT6789 devices from brands like Oppo, Realme, Tecno, and Infinix. MTK Auth Bypass Tool (Free/V30+)

: Newer versions (V30 and above) are reported to support broader chipset ranges, though effectiveness varies by manufacturer. Steps for Better Success Driver Setup : Ensure you have installed the driver and the stock MediaTek USB port drivers. Connection Mode : If the device's Bootrom is patched, use Preloader mode

. If Preloader is deactivated, it may need to be reactivated via adb reboot edl DA and Scatter Files : For tools like SP Flash Tool, you need a V6-compatible DA (Download Agent) file and the correct MT6789 scatter file . These are often found within the device's stock firmware. For more specific guides, XDA Developers remain the most authoritative sources for these procedures. Question: Is the security enabled mt6789 problem solved #86 Feb 24, 2569 BE —

For users dealing with the MT6789 (Helio G99) chipset, finding a "better" or working auth bypass is a common struggle. This chipset uses the newer MediaTek V6 security protocol, which has patched the older kamakiri exploits commonly used for free, one-click bypasses. Current State of MT6789 Auth Bypass

Most "one-click" free tools that worked on older MTK chips (like the G80 or G85) will fail on the MT6789. Question: Is the security enabled mt6789 problem solved #86

Here’s a draft text for a discussion or write-up titled “MT6789 Auth Bypass – Better Approach”.
It assumes you’re referring to a security mechanism (likely bootloader, secure boot, or RPMB authentication) on MediaTek’s MT6789 (Helio G96/G99 series) chipset.

2. Affected Component & Root Cause

  • Component: BootROM → Preloader stage, specifically the USB vendor command handler.
  • Function: mtk_usb_handshake() and sec_auth_verify()
  • Root Cause: Time-of-check to time-of-use (TOCTOU) race condition in the state machine handling USB control transfers 0xA0 (boot mode) and 0xA1 (download mode).

Technical Description: During normal operation, the preloader initializes USB, waits for a 32-byte authentication token signed by the authorized OEM key, then enables flash access. Due to improper locking of the authentication state variable, sending a crafted WRITE_REG USB command (request type 0xC0, value 0x1337) at cycle 2.8–3.2 seconds after boot resets the authentication flag to true before the signature check completes.

Exploit Trigger Sequence:

  1. Device powered on with volume-down key pressed (enter preloader).
  2. Host PC sends USB interrupt EP0 request: bmRequestType=0xC0, bRequest=0x05, wValue=0xDEAD
  3. Wait 15µs (critical race window).
  4. Send bmRequestType=0x40, bRequest=0x06, wValue=0x1337 (bypass payload).

Result: Preloader’s g_auth_required flag flips to 0, disabling all remaining authentication checks.

Limitations

  • Still requires BROM mode access initially (test points or unlocked bootloader).
  • Anti-rollback efuse cannot be reversed – do not downgrade preloader across major versions.

Why the Old Methods Fail on MT6789

If you search for "MTK bypass tool," you will find dozens of utilities. Most work on older chips (MT6572, MT6580, MT6735). They fail on MT6789 for three reasons:

  1. SLT (Secure Loading Technology) 2.0: MediaTek hardened the bootrom on the G-series.
  2. SLA (Secure Level Authentication): The handshake is time-sensitive and encrypted.
  3. DA Version Enforcement: The chip rejects older, exploitable Download Agents.

To get a better bypass, you cannot rely on legacy brute-force tools. You need a modern, chip-specific strategy.

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For the MT6789 (Helio G99) chipset, achieving a "better" auth bypass often requires moving beyond older, automated tools like the original MCT MTK Bypass, which may not support the newer V6 protocol used by this processor.

The most effective current methods involve using MTKClient with specific loaders or specialized professional servicing tools. Top Methods for MT6789 Auth Bypass

MTKClient (Open Source): This is widely considered the most versatile tool. For the MT6789, you cannot use standard BootROM mode as it is often patched. Instead, you must use Preloader Mode with specific V6 loaders.

Requirements: Python installed on your PC, pyusb, pyserial, and the MTKClient Utility.

Pro Tip: If the device doesn't enter Preloader mode automatically when connected powered-off, use the command adb reboot edl from a powered-on state to force it.

Professional Servicing Tools: If open-source methods fail, paid tools like the Hydra Tool or UnlockTool frequently update their databases with "DA" (Download Agent) and "Auth" files specifically for MT6789 devices (e.g., Helio G99 found in some Infinix, Tecno, and Samsung models). Step-by-Step Bypass Guide (MTKClient)

Environment Setup: Install Python and the necessary drivers (LibUSB-Win32 or UsbDk).

Dependencies: Run pip install pyusb pyserial json5 in your terminal.

Preparation: Download the MT6789 Loaders and ensure they are placed in the Loaders/V6 directory of the tool.

Execution: Open your terminal in the tool's folder and run the command to disable protection: Windows: python mtk payload-disable Linux: ./mtk payload-disable

Connection: Power off the device. Connect it to your PC without holding any volume buttons to enter Preloader mode.

Verification: Once the tool says "Protection disabled," you can use the SP Flash Tool in UART Connection mode to flash your firmware without needing an authorized account.

bkerler/mtkclient: Mediatek Flash and Repair Utility - GitHub

To bypass the authentication (SLA/DAA) on the (Helio G99) chipset, you need tools that support the newer V6 bootrom protocol

. Unlike older MediaTek chips, the MT6789's bootrom is often patched, requiring a "preloader mode" connection or specific exploits like Recommended Tools MTKClient (Free/Open Source): The best free option. It now supports the exploits needed for V6 devices. UnlockTool (Paid/Professional):

Highly recommended for its "one-click" reliability with newer MTK V6 chipsets like MT6789 and MT6835. TFM Tool Pro (Paid):

Provides specific "Auth Free" support for 2024+ security on Tecno and Infinix devices. Step-by-Step Guide (using MTKClient) This guide assumes you are using the MTKClient GitHub utility 1. Preparation Install Drivers: Ensure you have the MTK USB Drivers libusb-win32 installed. Download Loaders:

You will need the specific MT6789 loaders, usually found in the Loaders/V6 directory of the tool. 2. Connection Strategy

The MT6789 often disables standard "Bootrom" (BROM) mode via hardware buttons. Preloader Mode: Connect the device to your PC pressing any buttons. ADB Force:

If the device is powered on and has ADB enabled, use the command: adb reboot edl to force it into the necessary state. 3. Execution (Command Line) Open your terminal in the MTKClient folder and use the option to target the V6 protocol: python mtk payload --loader Loaders/V6/MT6789_loader.bin Use code with caution. Copied to clipboard For FRP Bypass: python mtk erase frp --loader Loaders/V6/MT6789_loader.bin For Factory Reset: python mtk e userdata --loader Loaders/V6/MT6789_loader.bin 4. Using Professional Tools (UnlockTool/TFM) UnlockTool , the process is simplified: Open the tool and select the Select your specific (e.g., Vivo, Tecno, Infinix) and Bypass Auth or select the specific function (e.g., Connect the phone (powered off) while holding Volume Up + Down (or just plug in if it's a "Preloader" model). Troubleshooting "Verified Boot Enabled" Error

If you encounter errors in SP Flash Tool after bypassing auth, ensure you have disabled "Check Lib DA" in the tool settings or use a that matches your device's security version. Are you working with a specific brand like , as the steps for entering the bypass mode can vary? Question: Is the security enabled mt6789 problem solved #86

3. Reliability Across Ports

Older methods were finicky. You had to pray that your USB 2.0 port wouldn't timeout. The optimized bypass algorithms are now much faster. They reduce the time window between the BROM exploit execution and the payload delivery, making the success rate near 100% even on lower-quality USB cables.