Weird itunes error 21, cannot restore.
i opened my iphone(4.0.2 jailbroken) and tried to clean it... but when i turned it on, my camera wont open so i opened it again and got the error 21... since then ive been trying to restore it and end up with errors 21, 14, 1601. mostly 21.. but one time ive managed to restore it to 4.2.1 and got stuck with the jailbreak(redsnow)..
sometimes i can get pass the restore progess bar but it suddenly reboots after 30-50%.. it gives a white screen then error 21 pops out from itunes..
sometimes the white screen has green vertical lines or blue flashing... i dont know what to do... please help me..
i also encountered error 9 but most of the error is 21...
what i do to restore:
1. plug iphone to usb (which by the way, turns on once i plug it) i cannot switch it on/off since i always end up at the recovery mode every time i turn it on... also, sometimes when i switch it on, i only get a blank black screen... no apple logo.
2. put iphone to dfu mode...
method 1: hold power and home while the iphone is on and wait unitl it shuts off and count from 1 to 7. then itunes reads it and i go with the restore process but when the phone is about to get to the apple logo screen where the wheel and progress bar shows up... its suddenly reboots and i get a white screen plus error 21 instead..
method2: same as the first one, but instead of counting 1 to 7 after the phone turns off. i rehold the home and power again and count 1 to 10 (which is the normal way in dfu mode) i also get the same results as to method 1.
i also sometimes get a kernel panic during this process...
i dont know whats wrong with my iphone... but i think it has to do with the connections or IC or something... im only a newbie.. and my phone is out of warranty. i already brought this to a repair shop and the technician said its a board problem...
please, please... i really need some help here... i tried everything and i really want my iphone back.. please...
thanks for you time in reading my post... i hope someone could help me...
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14 commentaires
need some guides here... tried the apple support...
@pollytintop: im guessing my phone has a problem on running the restore, since im able to restore it halfway and it suddenly reboots... but sometimes its just stuck with the white screen of death with some blue/green lines showing error 21..
par markeeinsik
have you tried recboot/ireb/irecovery type programmes? to boot out of recovery loop?
I'd also try downloading a clean version of 4.0.2 or whatever from http://www.felixbruns.de/iPod/firmware/ and instead of allowing itunes to set it's own restore software.. you'll need to select the new software.. alt+select for a mac (don't know the windows way but it's on the site)
par pollytintop
@pollytintop = i tired ireb. i dont know how to use recboot and irecovery. do you have any guide or something? im using windows xp sp3... how to boot out of recovery mode?. i dont know why im stuck with recovery mode. but since i tried to jailbreak it, maybe it corrupted some files. im already 4.2.1, is it still possible for me to restore to 4.0.2? i dont have my shsh saved. my phone is iphone 3g. i was able to restore my iphone using my 4.2.1 fw...
par markeeinsik
what is your baseband now?
par pollytintop
If you dont have your SHSH's saved, you can't downgrade to 4.0.2. Sorry. Polly, why dont you link him with the link I provided to you so he can restore his phone. I dont wanna hijack your answer.
par Majesty
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