Blackberry Keyone Stuck In Bootloader Menu

Some KEYone variants (BBB100-1, BBB100-7) allow bootloader unlocking via fastboot oem unlock (requires OEM unlock enabled in Developer Options beforehand – not possible if device won’t boot).
If already unlocked, try:

fastboot flash boot boot.img
fastboot flash system system.img

From bootloader:

Before plugging into a computer, try these non-invasive methods to rule out simple software glitches or stuck buttons. blackberry keyone stuck in bootloader menu

If you can navigate the bootloader menu (using Volume Up/Down to move, Power to select), do this: From bootloader:

Note: This deletes temporary files but keeps your personal data intact. Before plugging into a computer, try these non-invasive