Samsung M017f Isp Pinout [verified] May 2026

Technical Guide: Samsung M017F (Galaxy A02s) ISP Pinout and eMMC Operations

1. Introduction

The Samsung Galaxy A02s (Model Code: SM-M017F) is a widely used budget smartphone. In the world of mobile repair and forensic data recovery, "JTAG" is largely obsolete, having been replaced by ISP (In-System Programming).

ISP allows technicians to communicate directly with the onboard eMMC flash memory without fully disassembling the chip. This is critical for: samsung m017f isp pinout

  • Unbricking: Reviving a device that fails to boot (hard brick) due to corrupted bootloader/preloader.
  • FRP Bypass: Removing Factory Reset Protection when standard exploit methods fail.
  • Data Recovery: Extracting user data from a device with a broken screen or dead logic board.

1. Objective

To identify, document, and provide the ISP (In-System Programming) pinout for the Samsung device designated SM-G017F (assumed variant of Galaxy J1 Mini Prime / SM-J106B family) for the purpose of: Technical Guide: Samsung M017F (Galaxy A02s) ISP Pinout

  • Dead phone repair (EMMC repair/replacement)
  • Flashing bootloader/firmware via low-level interface
  • Bypassing software bricks without a functional USB download mode

3. Locating the M017F ISP Points

On the Samsung M017F motherboard, the eMMC test points are not always clearly labeled on the PCB silkscreen. However, they are typically clustered near the eMMC chip itself or in a dedicated grouping of golden contact pads. Unbricking: Reviving a device that fails to boot

5. Voltage and Signal Levels

  • VCC: 3.3V ±5% (Do not use 1.8V – eMMC on Exynos 3475 uses 3.3V I/O)
  • CLK frequency: Start at 1 MHz for stability, increase to 25–50 MHz after detection
  • Pull-up resistors: 50kΩ internal on SoC; no external required

Typical ISP pins and signals (common for Samsung budget models)

Note: Pad labels are generic; verify continuity to components (eMMC, PMIC, ground) before powering.

  • VCC / VBAT: Main battery input (powers SoC). Usually a large pad or nearby test point. Measured around 3.7–4.2 V when battery connected.
  • GND: Multiple ground pads; use large shields or pads near eMMC.
  • BROM / BOOT_EN (sometimes labeled HLOS or EDL_EN): Boot-mode pin used to force boot/EDL; may be tied to test pad near power management.
  • eMMC_CMD: Command line of eMMC.
  • eMMC_CLK: Clock line for eMMC.
  • eMMC_D0…D7: Data lines (D0–D7), sometimes only D0–D3 for 4-bit mode.
  • eMMC_RST#: Reset line (if present).
  • eMMC_VCC / VCCIO: eMMC power rail(s) — often 1.8V and/or 3.3V regulator outputs. Do NOT apply wrong voltage to eMMC pins.
  • UART_TX / UART_RX: Serial console (useful for boot messages). Usually near power or PMIC.
  • ISP_GND: ground reference for ISP adapter.