Iphone4 restore unknown error (21) - GSM-Forum

etool30 · 04-28-2012, 17:37

Hi,
Could some one please help how to restore Iphone4 factory unlocked. I was trying to update from 4.3.5 to 5.1 and getting this error and now the phone is continuously in recovery mode. Please do help.

Thanks and regards

jakoy · 04-28-2012, 17:40

try to check your host file

Tunisia-Sat · 04-28-2012, 18:01

You have to put your device into the DFU mode and not into recovery mode. Device won't boot correctly an stuck at the Apple logo after the error. Press and hold power and home button until it reboots.

Error when using Sauriks server for a restore with iOS 5.x in the recovery mode at least on a A5 device.

etool30 · 04-30-2012, 13:20

Iphone 4 - factory unlocked and i tried to restore in both the ways (recovery mode and dfu mode). Unfortunately my device is not kicking out of recovery mode. Can some body help with true solution.
Thanks and regards

GSM SKILS · 04-30-2012, 13:26

for me i think

apple server for iphone 4 closed

we have to wait

thanx.

redhouane_km · 04-30-2012, 16:39

hi sir desable antivirus 100/100 tested

dominica · 06-18-2012, 19:21

dont even have antivirus but still error 21

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04-28-2012, 17:40	#2 (permalink)
jakoy No Life Poster Join Date: Aug 2002 Location: Island Garden City Of Samal,Ph Posts: 1,971 Member: 14852 Status: Offline Sonork: 100.1608716 Thanks Meter: 503	try to check your host file

04-28-2012, 18:01	#3 (permalink)
Tunisia-Sat Insane Poster Join Date: Apr 2010 Posts: 95 Member: 1278922 Status: Offline Thanks Meter: 24	You have to put your device into the DFU mode and not into recovery mode. Device won't boot correctly an stuck at the Apple logo after the error. Press and hold power and home button until it reboots. Error when using Sauriks server for a restore with iOS 5.x in the recovery mode at least on a A5 device.

04-30-2012, 13:20	#4 (permalink)
etool30 Freak Poster Join Date: Oct 2004 Location: KADAPA, A.P. INDIA. Age: 52 Posts: 324 Member: 86802 Status: Offline Thanks Meter: 457	Iphone 4 - factory unlocked and i tried to restore in both the ways (recovery mode and dfu mode). Unfortunately my device is not kicking out of recovery mode. Can some body help with true solution. Thanks and regards

04-30-2012, 13:26	#5 (permalink)
GSM SKILS No Life Poster Join Date: Oct 2006 Location: Online Age: 18 Posts: 926 Member: 368697 Status: Offline Thanks Meter: 223	for me i think apple server for iphone 4 closed we have to wait thanx.

04-30-2012, 16:39	#6 (permalink)
redhouane_km Freak Poster Join Date: May 2006 Location: algeria Posts: 151 Member: 272806 Status: Offline Thanks Meter: 17	hi sir desable antivirus 100/100 tested

06-18-2012, 19:21	#7 (permalink)
dominica No Life Poster Join Date: Feb 2010 Location: GHANA Posts: 822 Member: 1240625 Status: Offline Sonork: LABISTA Thanks Meter: 48	dont even have antivirus but still error 21