So yes ... Last night I was trying to get my iPhone with the stock 3.1.3 firmware activated (it has been lying around unusable for about 3 months or so after it was upgraded "accidentally" by my spouse - don't ask)...
Since everybody and his dog knows this firmware is as of yet not JB'able and unlockable unless some requirements are met ... Which my iPhone didn't have.
Being a bit frustrated and killing time I decided to try a downgrade to 3.1.2 and then JB with Blackra1n so I could use Pwngatool 4.0 to create a custom ipsw and upgrade to 4.0 firmware. Low and behold it worked ... I still can't believe it myself.
Now ... I have to say ... I didn't just try it ... I'll give you the low-down of what I did:
- I put the iPhone into DFU
- I opened a connection to the iPhone with iRecovery
(or vice-versa, can't really recall)
- I started the alt-restore in iTunes with the 3.1.2
- The restore procedure checked the Apple sites for the restore a few times but went through with the restore anyway.
- I JB'd with Blackra1n
- I upgraded to iTunes 9.2
- I restored with the custom ipsw created with pwngatool 4.0
- installed Ultrasn0w 0.93
I now have a 3GS with iOS4 unlocked.
My question is ...
How was I possible to downgrade? Did someone experience the same thing?
Was it the procedure I used?
Just wondering.
[edit] For the record, I do not, nor did I ever had the SHSH files stored locally or on the Cydia servers
Since everybody and his dog knows this firmware is as of yet not JB'able and unlockable unless some requirements are met ... Which my iPhone didn't have.
Being a bit frustrated and killing time I decided to try a downgrade to 3.1.2 and then JB with Blackra1n so I could use Pwngatool 4.0 to create a custom ipsw and upgrade to 4.0 firmware. Low and behold it worked ... I still can't believe it myself.
Now ... I have to say ... I didn't just try it ... I'll give you the low-down of what I did:
- I put the iPhone into DFU
- I opened a connection to the iPhone with iRecovery
(or vice-versa, can't really recall)
- I started the alt-restore in iTunes with the 3.1.2
- The restore procedure checked the Apple sites for the restore a few times but went through with the restore anyway.
- I JB'd with Blackra1n
- I upgraded to iTunes 9.2
- I restored with the custom ipsw created with pwngatool 4.0
- installed Ultrasn0w 0.93
I now have a 3GS with iOS4 unlocked.
My question is ...
How was I possible to downgrade? Did someone experience the same thing?
Was it the procedure I used?
Just wondering.
[edit] For the record, I do not, nor did I ever had the SHSH files stored locally or on the Cydia servers
