Always use an Apple-certified (MFi) Lightning or USB-C cable.
: If the error occurs in Recovery Mode, manually put the device into DFU mode before attempting the flash again. error unable to load restore ramdisk 3utools full
Follow these steps in order, from the simplest solutions to more advanced fixes. Always use an Apple-certified (MFi) Lightning or USB-C cable
This is a condensed workflow; research each step carefully. research each step carefully.