Help with jailbreaking and Cydia for iPhones, iPads, and iPod touches.

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How to fix some mysterious problems.

hello, my iphone have ios 4.1 and i want to safely update it with 4.2.1. so can anyone tell me how to do this process safely with out any damage? (my iphone stil locked with at&t carrier)

asked 18 Mar '11, 22:48

nitinsavaliya's gravatar image


edited 22 Mar '11, 10:52

spockers's gravatar image

spockers ♦♦

Do you have 4.2.1 shsh's? Get TinyUmbrella and clisk "Save SHSH" and see if it lists 4.2.1. If not, you can't go to 4.2.1.


answered 18 Mar '11, 22:51

spockers's gravatar image

spockers ♦♦

yeah.i have shsh for 4.2.1.. so how to upgrade it?

(18 Mar '11, 23:05) nitinsavaliya nitinsavaliya's gravatar image

Run TinyUmbrella, click "start TSS server." Leave that running. Open iTunes, hold shift and click restore button. Point it to your 4.2.1 ipsw. If you don't have it get it from Then you can re-jailbreak.


answered 18 Mar '11, 23:08

spockers's gravatar image

spockers ♦♦

i did upgrade but there is itunes 1013 error ... how to solve it?

(18 Mar '11, 23:32) nitinsavaliya nitinsavaliya's gravatar image

That's normal. You just need to kick it out of recovery mode loop now. Download iREB (, run it and click the "Recovery mode loop fixer" tab.

(18 Mar '11, 23:39) spockers ♦♦ spockers's gravatar image

i downloaded ireb, run it and click the "Recovery mode loop fixer" tab. then click "Set Auto-Boot True (Fixes 1015 Errors / Recovery Loops)" but it's still in dfu mode. now?

(19 Mar '11, 00:23) nitinsavaliya nitinsavaliya's gravatar image

Hold home+power until you see the Apple logo.

(19 Mar '11, 00:31) spockers ♦♦ spockers's gravatar image

i did it but it's still stuck in usb arrow .......... ??????

(19 Mar '11, 00:34) nitinsavaliya nitinsavaliya's gravatar image

run itunes, it will ask if you want to set it up as new or restore from backup.

(19 Mar '11, 00:39) spockers ♦♦ spockers's gravatar image

@nitinsavaliya, any luck?

(19 Mar '11, 09:24) spockers ♦♦ spockers's gravatar image

no dude, it's still stuck with usb arrow, i tried so many times but it's didn't work, so i restore it with original version ios 4.1.

(19 Mar '11, 12:57) nitinsavaliya nitinsavaliya's gravatar image

That's really odd that iREB wouldn't kick it out of recovery loop. Anyway you could try it again from scratch, or if you're happy with 4.1 you can jailbreak with limera1n.

(19 Mar '11, 13:05) spockers ♦♦ spockers's gravatar image

yead,it is, i bought gevey turbo sim so i like to go with 4.1, i'il try it later.......... thanks for your hepl.

(20 Mar '11, 12:40) nitinsavaliya nitinsavaliya's gravatar image

i did upgrade but there is itunes 1013 error ... how to deal with this error?


answered 18 Mar '11, 23:40

nitinsavaliya's gravatar image


See above comment.

(18 Mar '11, 23:48) spockers ♦♦ spockers's gravatar image

error 1013 is normal after selective upgrade to 4.2.1 and has to do with the second SHSH response which TU blocks/doesn't support as part of its mechanism to prevent baseband upgrades.

if you plan to jailbreak, then use greenpois0n now, it will jailbreak and bring you out of the recovery loop (only recovery loop of error 1013) if you don't want to jailbreak, put your device in DFU mode and use the Fix Recovery Loop button in TinyUmbrella, it uses greenpois0n exploit to break the recovery loop.

(20 Mar '11, 13:23) knightz4u knightz4u's gravatar image

Dear All:

My iPhone4 is 4.1 and I have 4.2.1 SHSH blobs.

I try to use Cydia sign server and TinyUmbrella.

They will keep old baseband and upgrade iOS from 4.1 to 4.2.1 (Of course we will see 1013 error and need to use GP6.1 to fix recovery)

However, I want to know how to complete upgrade(include baseband) from 4.1 to 4.2.1.

Please help.



answered 19 Mar '11, 04:33

skyfinder's gravatar image


What baseband are you on now? Are you factory unlocked? Also, you should post your question as a separate thread, this one is getting a bit long...

(19 Mar '11, 09:16) spockers ♦♦ spockers's gravatar image

yuhoooooooooooooooo finally i did it... after recovery mode apear on screen i put iphone in dfu mode and jailbreak with greenpois0n and it's work. thanks @knightz4u and @spockers..


answered 22 Mar '11, 10:41

nitinsavaliya's gravatar image


Thanks for the update, I was beginning to think it must be a clandestine Steve Jobs attack on saurik's server. He's got those throwing stars, you know. Who's to say he doesn't have a ninja suit to go with them? Watch your backs, people...

(22 Mar '11, 10:51) spockers ♦♦ spockers's gravatar image
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Asked: 18 Mar '11, 22:48

Seen: 11,560 times

Last updated: 22 Mar '11, 10:52

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