Flashing incorrect partition data via EDL or MTK Client can permanently destroy the device's motherboard.
Ensure your PC has Google USB Drivers, Qualcomm HS-USB drivers, or MediaTek preloader drivers installed correctly. 4. Risks, Consequences, and Warnings docomo unlock bootloader top
To help narrow down the exact steps for your device, could you provide a few more details? Please let me know: Flashing incorrect partition data via EDL or MTK
For some older Xperia devices, flashing a global firmware (FTF) via Qualcomm HS-USB drivers
Japanese phones rely on a hardware chip for mobile payments (FeliCa). Unlocking the bootloader or flashing a global custom ROM often permanently breaks Osaifu-Keitai, meaning you cannot use your phone for Japanese transit cards (Suica/Pasmo) or local e-money.