Prerequisites

  1. Download the Fastboot ROM for your device.
  2. Install Android SDK platform-tools (fastboot.exe must be in system PATH).
  3. Boot the device into Fastboot Mode (Volume Down + Power or adb reboot fastboot).

Terminology

  • Anti-Rollback – Prevents flashing older firmware. Check with: fastboot getvar anti

  • Fastboot ROM – Complete OS image with separate partitions (boot, system, vendor, userdata, etc.).

Flashing Instructions

  1. Extract the Fastboot ROM to a folder on your PC.

  2. Boot the device into Fastboot Mode.

  3. Connect via USB and verify detection:

    fastboot devices

    Your device ID must appear. If it doesn’t, check out Troubleshooting

  4. Run the provided script or flash manually:

    • flash_all.bat – resets everything
    • flash_all_except_storage.bat – resets partitions but preserves user data
    • flash_all_lock.bat – resets everything + locks bootloader

    Example for full reset with unlocked bootloader:

    flash_all.bat

  5. Device should automatically reboot. If it didn’t run fastboot reboot or Hold Power button

Troubleshooting

  • If fastboot devicesreports waiting for devices:

    • Check Device Manager for issues.
    • Verify drivers are installed
    • Change USB cable/port.

  • If the script runs but does nothing:

    • Ensure fastboot.exe is in PATH.
    • Verify the device anti version ≤ firmware anti version.

  • If anti-rollback validation fails, it can be manually bypassed by editing scripts, but this risks bricking the device.