Sometimes the device is in a weird half-state. Rebooting the recovery environment can clear the blockage.
The in 3uTools typically occurs during the "Easy Flash" or "Pro Flash" process, often getting stuck between 16% and 20% . This error signals a failure in the initial handshake between your computer and the iOS device, where the system is unable to upload the temporary environment (the ramdisk) needed to write the new firmware to the device's storage. Common Causes of the Ramdisk Error error unable to load restore ramdisk 3utools
Start with (Delete and re-download firmware) and Method 2 (Disable Antivirus). These two steps resolve the "Unable to load restore ramdisk" error in about 80% of cases. If that fails, proceed to reinstalling iTunes drivers Sometimes the device is in a weird half-state