If selecting Recovery mode simply loops back to the bootloader, your OS is corrupt. This is where the comes in.
Summary
Connect your KEYone to the PC using a high-quality USB-C cable. Extract the Autoloader .zip file on your computer. Locate the file named flashall.bat (or similar). and Run as Administrator . A command prompt will open. Follow the on-screen prompts. Warning: This process will wipe all user data. ⚠️ Common Errors and Troubleshooting "Device Not Found"
If you see 9008, breathe. You have a pulse.
If your phone is showing Downloading... or a frozen bootloader menu, do not throw it away. Set up your Windows machine, download the Repack files, and follow the steps above. You are not a prisoner of the bootloader. You are its master.