Discuss Apple logo then reboot loop. Error 21 at the iPhone 4 - Hackint0sh.org; Got given an iPhone to repair. Dont know the history on this handset.
Basically when ...
Apple logo then reboot loop. Error 21
Got given an iPhone to repair. Dont know the history on this handset.
Basically when powering on the apple logo appears then after about 8 seconds the phone reboots and the logo reappears then a reboot and so on. Stuck in this loop.
On my Windows 7 home premium laptop I downloaded redsn0w 9.12b2 and put the handset into PWNG DFU using redsn0w then tried to restore via iTunes but got Error 21.
Searched the forums and tried the following suggestions:
- Tried from another PC.
- Installed latest version of iTunes.
- Updated all drivers of the PC to latest.
- Turned off antivirus and Firewall
- Commented out lines in the hosts file
None of the above makes any difference. Still Error 21.
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