Blackberry Keyone Autoloader -

Fixing a "boot loop" where the phone stuck on the BlackBerry logo.

Unlike many Android devices, the KeyOne’s bootloader is on most carrier and retail variants (except some BBB100-1 units). Consequently, standard fastboot flash commands are unavailable. The Autoloader bypasses this restriction by operating before the bootloader verification—at the Qualcomm Secondary Boot Loader (SBL) level. blackberry keyone autoloader

Download the official BlackBerry USB Drivers to ensure your PC recognizes the device in bootloader mode. How to Use the KEYone Autoloader Fixing a "boot loop" where the phone stuck