Updating restore ramdisk fail pwnagetool
You always have to go into DFU mode and restore from there.
Error 13 Occurs when you want to install a beta firmware with i Tunes for Windows (actively blocked by Apple; beta users are developers and therefore must have a Mac). Check the USB connection and try other direct ports or maybe the USB cable is an older one. The installed version of i Tunes may also be too old. Check the USB connection and try other direct ports or maybe the USB cable is an older one. You're trying to 'update' to a beta firmware instead of performing a restore.
Updating to the latest version of i Tunes and then restoring should resolve this issue Error 20 Reportedly happens during failed downgrade attempts (i OS 2.0 to 1.1.1, 5 beta to 4.3.3).
Some have seen success afterwards by doing the downgrade from DFU mode instead of the normal Recovery mode.
(downgrade from Error 1600 - Custom firmware can't be restored on a device with DFU Mode. Using i REB, sn0wbreeze, redsn0w, or Pwnage Tool, you need to enter a pwned DFU Mode.
During that process the software gets patched and the custom firmware should run without any problems.
See also Apple's Knowledge Base article number TS1927.
Error -50 Delete Storm Video, Quick Time, i Tunes, then reinstall i Tunes.
The baseband does not get updated using this method. Error 1 You are attempting to downgrade an i Phone from i OS 5 to i OS 4.x.
The installed version of i Tunes may also be too old. Error 2 ASR does not exist on ramdisk or is corrupt/not signed. Error 6 Not enter the downgrading mode, change USB port (the back one of chassis is better) and restart computer. Error 11 Removed BBFW file in the firmware folder of an unzipped IPSW. The device is bootable, if you set the auto-boot to true or use Tiny Umbrella and use "Kick Device out of Recovery".
sn0wbreeze 1.6 Custom Firmware has a ASR patch problem. Error 9 Due to asr being patched, the SHA signature is automatically changed and after being resigned the kernel will refuse to use it. If necessary kernel patches are not applied, it will fail to load asr and error 9 would occur during restore. You are trying to update to a custom firmware from Pwnage Tool 4.1 .
Device won't boot correctly an stuck at the Apple logo after the error. Error 27 I got this after I tried to flash i OS5 from 3Gs on a 3G Phone (I modified the restore.plist so it would flash and also exchanged Restore Ram Disk and kernelcache) Error 28 Hardware error. The problem is a bad dock connector on the i Phone. If you have tried almost everything, reset the logic board (leave uncharged for five days or remove battery for half an hour), then pwn and restore.