Upgrading jailbroken iphone 4

Upgrading jailbroken iphone 4

Posted December 19, 2012 at 3:25pm by marcrwno1 · 2684 views
Hi i have a jailbroken (jailbreakme) iphone 4 on ios 4.0 (8a293) baseband 01.59.00 I would like to upgrade to any version of ios 5 as I am unable to use many apps that require at least ios 5 after reading many tutorials I am unsure whether it is possible to do this obviously I would like an untethered jailbreak. I am confused about unsigned ipsws and whether it will still work I am concerned I will not be able to restore all my jailbroken apps any help or a pointer to the relevant tutorials would be greatly appreciated many thanks in advance Marc

Answers (3)

mateen - December 23, 2012 at 11:09pm
So what you want to do is create a custom IPSW that 1) prevents any baseband upgrade 2) is stiched to that 5.1.1 blob (otherwise the restore will error out - apple isn't signing 511). Once you create that IPSW, get into DFU mode, restore with redsn0w, then jailbreak, then run ultrasn0w. Even if you don't want the unlock, ultrasn0w is required.
marcrwno1 - December 20, 2012 at 1:31pm
Hi Mateen I have determined which blobs I have they are:
iPhone3,1 2885515019021 remote blobs:
5.1.1, 5.1,
4.3.5, 4.2b3, 4.2.1, 4.1, 4.0.2, 4.0.1, 4.0
Thanks for your time Marc!
mateen - December 19, 2012 at 7:39pm
You need to first verify which SHSH blobs you have saved. You can do this with redsn0w or tinyumbrella. You can follow this guide for that.


One you know what blobs you have, reply back.
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