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Restoring iPhone 3GS to older firmware

D

dacapo

macrumors 6502
Original poster
Jan 25, 2010
403
10
I did a search but am not sure if I phrased my search correctly, so apologies in advance if there is an easy answer for this.

Basically, I'm on 4.0.1 JB and I have my SHSH blobs from 3.1.3 all the way up using Saurik's method.

But, I need to take my phone in to Apple to see if they will replace it. But if they don't (since it's out of warranty), I'd like to stay on a lower iOS version, like 4.3.3, if possible.

Since it's been over a year since my JB, I just can't remember the details. I'm guessing that I should download an older firmware, and then do a shift (or alt) restore in iTunes.

Now my question: If I do this, will I be able to take it in to the Apple Store as a clean/non-jb phone, or do I need to just do a clean restore and upgrade?
 
dacapo said:
I did a search but am not sure if I phrased my search correctly, so apologies in advance if there is an easy answer for this.

Basically, I'm on 4.0.1 JB and I have my SHSH blobs from 3.1.3 all the way up using Saurik's method.

But, I need to take my phone in to Apple to see if they will replace it. But if they don't (since it's out of warranty), I'd like to stay on a lower iOS version, like 4.3.3, if possible.

Since it's been over a year since my JB, I just can't remember the details. I'm guessing that I should download an older firmware, and then do a shift (or alt) restore in iTunes.

Now my question: If I do this, will I be able to take it in to the Apple Store as a clean/non-jb phone, or do I need to just do a clean restore and upgrade?
Click to expand...

Apple still signs 4.1 fw on 3GS. So, you can restore to this firmware. Like you said, shift + restore and point it to 4.1 to restore your phone to factory setting.
 
dacapo said:
Thanks, one more quick question.
Do I still have to put the phone in DFU mode?
Click to expand...

Since you are upgrading, I don't believe you need to put it into DFU, just shift + restore and point it to 4.1, and it will go through. Also, you will not get any error on this upgrading.
 
Crystal-RX said:
Since you are upgrading, I don't believe you need to put it into DFU, just shift + restore and point it to 4.1, and it will go through. Also, you will not get any error on this upgrading.
Click to expand...

Awesome, thanks! :D

EDIT: Confirmed that it worked. Is 4.1 the only firmware that I can upgrade to on a 3GS, or are 4.2, 4.3 etc a possibility?
 
Last edited:
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