Huawei LUA-L02 (Y3II) that is "dead" or stuck on the logo ("hang on logo"), you must SP Flash Tool to write a compatible stock ROM to its

Flash File / Repack: A "flash file" is the operating system firmware. A "repack" typically refers to a custom-compiled or modified firmware package designed to fix specific bugs, such as the "restart on logo" or "dead boot" issue. Repairing the Huawei LUA-L02

⚠️ Warning: Using a non-repacked stock ROM on a device with “dead” symptoms often results in SP Flash Tool errors like S_BROM_CMD_STARTCMD_FAIL (0x7D4). A properly repacked ROM includes a BROM-patched DA.

Step 2: Prepare SP Flash Tool

1. Extract the repacked firmware to a folder (avoid spaces in path).
2. Run flash_tool.exe as Administrator.
3. Click Scatter-loading and select the MT6735M_Android_scatter.txt from the repack.
4. Set Download Only mode (for hang logo/firmware upgrade) or Format All + Download (for dead phone – but this erases NVRAM, so backup IMEI first if possible).

Troubleshooting Common Errors

• BROM Error S_DA_SDMMC_WRITE_FAILED: This often indicates a corrupt SD card if you are using an SD card method, or bad NAND flash memory on the motherboard. Try formatting the phone first in the SP Flash Tool (Format Tab) and then flashing.
• Error 4032 (Not Detecting): The drivers are not installed correctly or the USB cable is faulty. Try a different USB port (preferably USB 2.0) or reinstall the VCOM drivers.
• Bootloop Persists: If the phone still hangs on the logo after flashing, boot into Recovery Mode (Power + Volume Up) and perform a "Wipe Data/Factory Reset".

Flashing becomes necessary when standard factory resets fail. Common issues fixed by a clean firmware install include: