Don’t let that black-and-white menu defeat you. Your physical keyboard deserves a second chance.
These steps should help you troubleshoot and hopefully resolve the issue with your BlackBerry KEYone being stuck in the bootloader menu. blackberry keyone stuck in bootloader menu top
button or a tight case pressing against it during startup. Remove any case and "mash" the volume buttons to ensure they aren't physically jammed. Don’t let that black-and-white menu defeat you
BlackBerry KEYone is stuck on the bootloader screen (often showing "mode: product" at the top), it usually indicates a software glitch or a hardware issue with the buttons Immediate Solutions to Exit the Menu Select "Continue to boot up" Volume Up/Down keys to highlight this option and press the button to select it. Force a Restart : Press and hold the button for approximately 30 seconds button or a tight case pressing against it during startup