How to upgrade from 4.1 to 4.3.3 on 3GS?

**hbrites** · 08-06-2011 01:22 PM

Hi.

I have a 4.1 iphone 3GS. I wanted to upgrade it, but in tinyumbrella says I only have SHSH blobs for 4.1, 4.3.4 and 4.3.5.

Is it possible to upgrade to 4.3.3 without SHSH?

Thank you for your help.

**Olethros** · 08-06-2011 10:36 PM

Originally Posted by hbrites

Hi.

I have a 4.1 iphone 3GS. I wanted to upgrade it, but in tinyumbrella says I only have SHSH blobs for 4.1, 4.3.4 and 4.3.5.

Is it possible to upgrade to 4.3.3 without SHSH?

Thank you for your help.

No it is not possible to load 4.3.3 without a valid SHSH. Stay with 4.1 for now (and keep on saving your SHSH blobs)

**JimBrown** · 08-26-2011 11:57 AM

/* Moderator Edit */ Removing text as user was incorrect and leaving this was dangerous to OP /* Moderator Edit */

**n1ckn4m3** · 08-29-2011 09:35 PM

Olethros is correct. It is not presently possible to upgrade/downgrade to iOS 4.3.3 unless you have the SHSH stored for iOS 4.3.3. Attempting to restore to it without the SHSH will end up with your phone either rebooted and at the home screen (of the same iOS revision you were on before you started) or, in recovery mode with an error about your device not being eligible for the requested build.

The only way around this is to have the SHSH on file and use TinyUmbrella or Saurik's server to replay the SHSH to iTunes during the restore (a procedure that is documented heavily in the forums).

**Olethros** · 08-29-2011 10:30 PM

Originally Posted by n1ckn4m3

Olethros is correct. It is not presently possible to upgrade/downgrade to iOS 4.3.3 unless you have the SHSH stored for iOS 4.3.3. Attempting to restore to it without the SHSH will end up with your phone either rebooted and at the home screen (of the same iOS revision you were on before you started) or, in recovery mode with an error about your device not being eligible for the requested build.

A third result is if you put the phone into pwned dfu mode and then try to restore without a SHSH blob. This will result in the phone stuck in real DFU mode (black screen, iTunes gives only a restore option)
Any partial SHSH blobs that may have been present on the device are destroyed.
The only way to recover and get back to a normally booting phone is to restore a properly SHSH personalised IPSW.