Custom Rom For Huawei P40 Pro May 2026

The Huawei P40 Pro is a masterpiece of mobile engineering, boasting a Kirin 990 5G chipset and a legendary Leica camera system. However, for many users, the absence of Google Mobile Services (GMS) and the limitations of EMUI are significant hurdles. Installing a custom ROM can breathe new life into this hardware, offering a cleaner interface, better privacy controls, and sometimes, a gateway to Google apps.

This guide explores the current landscape of custom ROMs for the Huawei P40 Pro, the technical challenges involved, and how to decide if modding is right for you. The Elephant in the Room: The Locked Bootloader

Before diving into ROM selection, it is vital to understand the primary obstacle: Huawei stopped providing official bootloader unlock codes in 2018.

Bootloader Status: Most P40 Pro units ship with a locked bootloader.

Third-Party Services: To install a custom ROM, you must use paid third-party tools (like Ministry of Solutions or DC-Unlocker) or hardware test-point methods to unlock the device.

Risk Factor: Unlocking and flashing carries a high risk of bricking your device and voids your warranty. Top Custom ROM Options for Huawei P40 Pro

While the development scene for Kirin processors is smaller than for Snapdragon devices, several high-quality projects exist. 1. HarmonyOS (The Official "Custom" Path)

While technically an official OS, many global users "rebrand" their EMUI devices to the Chinese HarmonyOS version.

Pros: Better performance, smoother animations, and frequent security updates.

Cons: Still lacks native GMS; includes Chinese bloatware that requires debloating. 2. LineageOS (Unofficial Ports)

LineageOS is the gold standard for clean, bloat-free Android.

Pros: Extremely lightweight, privacy-focused, and offers a stock Android feel.

Cons: Often lacks full support for the P40 Pro’s complex camera array, leading to lower photo quality compared to EMUI. 3. OpenKirin Projects

The OpenKirin team has historically been the backbone of Huawei modding. They provide ROMs based on AOSP (Android Open Source Project). Custom Rom For Huawei P40 Pro

Pros: Designed specifically for Kirin chipsets to ensure stability.

Cons: Development for newer EMUI versions (11 and 12) is slower due to Huawei's increased security. 4. GSI (Generic System Images)

Since the P40 Pro supports Project Treble, you can flash a GSI. Options: Pixel Experience, Resurrection Remix, or DotOS.

Pros: You can try the latest Android versions (Android 13 or 14).

Cons: "Bugs" are common, specifically with the in-display fingerprint sensor and face unlock. Benefits of Flashing a Custom ROM

🚀 Performance GainsRemoving EMUI’s heavy background processes can make the 90Hz display feel even more fluid and responsive.

🛡️ Privacy and ControlCustom ROMs often allow you to use MicroG (a lightweight replacement for GMS) or go completely "de-Googled" for maximum privacy.

🎨 Aesthetic FreedomIf you dislike the "iOS-clone" look of EMUI, ROMs like Pixel Experience offer the clean, minimalist Material You design. Key Considerations Before You Start

If you decide to proceed with flashing, keep these requirements in mind: Backup Everything: Flashing wipes all internal storage.

Check Model Numbers: Ensure the ROM is compatible with your specific variant (e.g., ELS-NX9).

Camera Sacrifice: You will likely lose the advanced Leica post-processing features found in the stock EMUI camera app.

SafetyNet: Many banking apps and Netflix (in HD) may not work if the device fails SafetyNet certification. Is it worth it in 2024?

For most users, the best experience on a P40 Pro comes from debloating EMUI using ADB tools rather than a full ROM swap. However, if you are a power user who demands a specific Android skin or wants to experiment with GSI builds, the hardware remains capable of running modern software beautifully. If you would like to move forward, I can help you with: The Huawei P40 Pro is a masterpiece of

A list of specific ADB commands to remove Huawei bloatware without unlocking the bootloader.

A guide on how to install GBox or GSpace for stable Google App usage.

The technical steps for preparing your PC for Huawei flashing tools.

Developing a custom ROM for the Huawei P40 Pro is restricted because Huawei officially terminated its bootloader unlock code service in 2018. Without an unlocked bootloader, standard custom ROMs (like LineageOS or Pixel Experience) cannot be natively flashed or developed by the community.

Instead, P40 Pro users typically "customize" their experience through rebranding to HarmonyOS or using advanced workarounds to restore Google services. Primary "Customization" Path: Rebranding to HarmonyOS 4.2

Since official custom ROMs are largely unavailable, the most popular advanced modification is rebranding Global (EMUI) units to the Chinese (HarmonyOS) version to access newer features and better Google Service (GMS) compatibility. Feature Category Rebranded HarmonyOS 4.2 Features User Interface

Live Window: Real-time capsule-style notifications (similar to Dynamic Island). Performance

Ark Engine: Improved system smoothness, faster app launches, and reduced power consumption. GMS Support

MicroG Integration: Native-like support for Google apps, including notifications and YouTube, though Google Pay remains limited. Customization

Advanced Themes: Deeper lock screen and icon personalization compared to standard EMUI. Privacy

Permission Tracking: Enhanced visual dashboard for app permission usage. Advanced Workarounds (Bootloader & Root)

While official codes are gone, some technical users use third-party tools or hardware-level hacks to gain deeper system access:

Part 5: The Verdict – Should You Do It?

Who should install a custom ROM on a P40 Pro? Part 5: The Verdict – Should You Do It

  • A developer or advanced enthusiast who has a backup phone.
  • Someone who bought the P40 Pro cheaply second-hand and doesn't care about the camera.
  • A user who prioritizes de-Googled, privacy-focused Android (using microG instead of GApps).

Who should absolutely not do this?

  • Anyone who loves the P40 Pro’s camera. You bought this phone for photography. A custom ROM will destroy that experience.
  • The average user. The effort, risk, and loss of features are not worth it.
  • Anyone on EMUI 12 or 13 with a locked bootloader. You are stuck. No custom ROM is possible.

1. GSI ROMs (Generic System Images) – The Best Bet

Because the P40 Pro supports Project Treble, you can flash a GSI. A GSI is a pure Android build that runs on any Treble-compatible device.

Popular GSIs working on P40 Pro:

  • LineageOS 20/21 (Android 13/14): The most stable. Offers a stock Pixel-like experience. You will lose the 50x Zoom camera optimization (basic camera works), and the IR blaster may break.
  • Pixel Experience GSI: Brings Google Photos unlimited storage in lower quality and the Pixel launcher. Ironic, because Huawei blocked Google, this ROM brings it back.
  • crDroid GSI: For users who want high customization (status bar mods, custom animations).

How to flash a GSI:

  1. Unlock bootloader.
  2. Flash a custom recovery (like TWRP for P40 Pro – rare) or use fastboot.
  3. Wipe system and data.
  4. Flash the GSI .img file to the system partition.
  5. Reboot.

Major Bugs on P40 Pro GSIs:

  • Fingerprint sensor: Often broken or slow.
  • 90Hz Refresh rate: May default to 60Hz.
  • Huawei Camera: You lose the AI and computational photography. You must use Open Camera or GCam mods (which are poor on Kirin).
  • Telephony: 5G might not work; VoLTE is spotty.

Introduction: The Huawei P40 Pro Paradox

The Huawei P40 Pro remains, to this day, one of the most exquisitely engineered smartphones ever made. Its Leica quad-camera system, the "Overflow Display" with 90Hz refresh rate, and the Kirin 990 5G chipset were flagship killers in every sense. However, the device shipped with a catastrophic Achilles' heel: No Google Mobile Services (GMS).

Due to US sanctions, Huawei launched the P40 Pro with its own Huawei Mobile Services (HMS) and the AppGallery. For millions of users worldwide, this was a dealbreaker. The inability to use Google Pay, YouTube, Gmail, or the Play Store natively forced many to look for drastic solutions. Enter the world of Custom ROMs.

Installing a custom ROM on the Huawei P40 Pro is not a journey for the faint of heart. It is a technical odyssey filled with bootloader locks, paid services, and significant risks. But for those willing to tinker, the reward is a fully functional Google-integrated flagship phone. This article explores everything you need to know.

5. The "DT" Proof (For developers only)

If you want to build your own:

  • Kernel source: Huawei released ELS-LGRP4-OVS kernel 5.10.43 under GPL. Available on GitHub (search Huawei_ELS_kernel).
  • Vendor blobs: Extract from ELS-LGRP4-OVS 11.0.0.230 firmware (find on androidhostlist).
  • DTB: Use els.dtb from stock vendor_boot.

1. The "ElevenOS" / OpenKirin Situation (The most stable path)

The only consistently maintained source for GSI (Generic System Images) that work decently on the P40 Pro is OpenKirin (specifically their ElevenOS or TrebleDroid builds).

Working:

  • Android 13/14 AOSP builds
  • VoLTE (with correct modem configuration)
  • Bluetooth audio
  • WiFi 6
  • 90Hz refresh rate

Not Working / Broken:

  • Ultra-Wide & ToF Cameras (Main 50MP RYYB sensor works, but with greenish tint in low light)
  • 5G Connectivity (LTE only)
  • Google Pay / Play Integrity (Unless using Kitsune Mask + tricky props)
  • Widevine L1 (Drops to L3 – No Netflix/Prime HD)

How to install (Simplified):

  1. Unlock bootloader (See Section 3)
  2. Flash a custom recovery (TWRP for ELS is buggy; recommend using fastboot directly).
  3. Wipe system, vendor, data.
  4. Flash OpenKirin GSI (Download system-roar-arm64-ab-vanilla.img).
  5. Reboot.
Custom Rom For Huawei P40 Pro