: Use a genuine Apple USB-A to Lightning cable. USB-C to Lightning cables often fail in DFU mode.

: Verify you are using a Lightning to USB-A cable. USB-C cables have known DFU mode issues – Apple's own USB-C cables may not work reliably. Use a USB-A cable, with a USB-A-to-C adapter if needed for newer devices.

To help tailor this to your device, please tell me your and current iOS version . If you hit a specific error code , let me know so I can give you the exact fix.

Improved Safe Mode, unlocked NVRAM on iOS 14.2, and fixed memory leaks. checkra1n 0.12.1 beta

A major feature of checkra1n 0.12.1 beta is the addition of an on-device alert that notifies you when the device has entered Key Details & Features

Do not use random Uploaded.to or Mediafire links. The most reliable sources are:

: Restart your PC. Press your BIOS boot menu key (F12, F11, or F8) and choose the USB drive.