fastboot reboot

Your phone will perform a factory reset. Upon reboot, you will see a warning about the bootloader being unlocked.

This method uses a leaked signed firehose loader for the Snapdragon 855 (SM8150) that works on Sharp Zero 2.

Steps:

  • Use QPST or QFIL

  • Send unlock command via Firehose
    Using fh_loader or a custom Python script:

    python edl.py --loader=prog_firehose_ddr.elf --unlock
    

    This writes to the aboot or xbl partition to set the unlock flag.

  • Reboot to bootloader

  • Note: The firehose loader is not public on GitHub due to copyright. It circulates in private Telegram groups for Sharp device modding.


    Once the phone reboots:

    Important: This method worked for firmware versions up to Android 11 and early Android 12 builds. Sharp may have patched this in later UPD patches.