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How to fix some mysterious problems.

I'm not liking my 3GS performance on 6.1.2. I'd like to downgrade it to 5.1.1 but the only SHSH blobs I have are for 4.1 (fetched it from Cydia with Tiny Umbrella) and 6.1.2. So I believe I need to downgrade to 4.1 and then once that's done then I need to use Snowbreeze to restore to 5.1.1. Is that correct? So, what program should I use to downgrade to 4.1? I tried redsnow, but it said it only supports 4.3. Please help.

What is the serial number?

(28 Mar '13, 20:50) iAdam1n ♦ iAdam1n's gravatar image

i think u cant without using blobs...

(28 Mar '13, 20:52) wertz wertz's gravatar image

Serial number starts 879235 But i already know it has the old baseband. Cydia said it had blobs for it and I downloaded them.

(28 Mar '13, 21:53) tc154 tc154's gravatar image

Ok, you cannot restore device ( regardless of its bootrom ) to unsupported version without shsh blobs. You can downgrade to 4.1 by simply doing shift-(option on Mac) restore in iTunes.


answered 28 Mar '13, 22:03

slavakulikoff's gravatar image


Well I do have blobs that I fetched from Cydia using tiny umbrella, and also another set that i got using iFaith that it downloaded from Apple. They are for 4.1. So you're saying i can just restore without stitching blobs. Will it upgrade my baseband or anything bad like that? Because I want to restore it again afterwards to 5.1.1 and unlock it.

(28 Mar '13, 22:24) tc154 tc154's gravatar image

Oh wait. Are you saying that if I do downgrade it to 4.1 that I WON'T be able to upgrade it to 5.1.1 without blobs?

(28 Mar '13, 22:39) tc154 tc154's gravatar image

You do not need blobs to restore 3Gs to 4.1 as 4.1. is still miraculously signed by Apple. I have to repeat again, you will not be able to restore to 5.x.x without shsh. If i was you, i would not experiment.

(28 Mar '13, 22:40) slavakulikoff slavakulikoff's gravatar image

That sucks... but it's also weird because a few weeks ago I had restored it from factory 4.1 to 4.3 using RedSn0w. Is 4.3 still being signed?

(28 Mar '13, 22:43) tc154 tc154's gravatar image

no 4.3, only 4.1 is still being signed.

(29 Mar '13, 01:55) wertz wertz's gravatar image

@tc154 why you want to downgrade to 4.1?beacuse 6.1.2 is perfect and having many new features.

(29 Mar '13, 03:35) Keerthi kumar Keerthi%20kumar's gravatar image

@slavakilikoff, just wanted a clarification- restoring to 4.1 through iTunes will upgrade the baseband to 5.14.02 so to unlock, it will be required to flash iPad baseband and then downgrade, right?

(29 Mar '13, 03:55) sandkuma002 sandkuma002's gravatar image

im not sure, but i always have problems downgrading with my 3gs if i dont preserve baseband. so, i always use sn0wbreeze simple mode to restore to my older firmwares.

(29 Mar '13, 04:02) wertz wertz's gravatar image

I just wanted to downgrade because the performance was bad.... but I've decided to live with it. I just restored to 6.1.2 for a fresh install and then didn't put as many Cydia apps and the performance is a little better.

(05 Apr '13, 10:31) tc154 tc154's gravatar image

Old Bootrom 3GS do not need SHSH blobs. You can restore to any version just by entering PWN DFU.

(05 Apr '13, 10:47) cybr1d ♦ cybr1d's gravatar image

@tc154 (re: "I just restored to 6.1.2 for a fresh install ...") did you use sn0wbreeze's Simple, Expert or Baseband Preservation mode for that, or a different method that doesn't need SHSH blobs for a old bootrom 3GS?

(05 Apr '13, 16:28) IgetITeh IgetITeh's gravatar image
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Asked: 28 Mar '13, 20:49

Seen: 4,324 times

Last updated: 05 Apr '13, 16:28

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