3GS with 3.1

[venkathh]

Did a lot of reading and lot of info for 3.1.2 and above.. not much on 3.1. I am using 3GS with 3.1 (not upgraded for quiet a while).

Can this still JB'ed and/or Unlocked ?

Any pointers for further reading would be appreciated.

Thanks.

[iYeow]

Yes, you can jailbreak with redsn0w 0.9.4 but browse to stock 3.1.2

unlock with ultrasn0w

You can also jailbreak with blackraIn

[venkathh]

Thanks. This worked.

Observations:
1) The first time redsn0w 0.9.4 ran and it seems to do something but nothing happened when my phone started up.
2) I cleaned up some apps so i can see new apps in my last page. Cydia was not there.
3) I then run redsn0w 0.9.4 again (second time) and this time it did what its supposed to do. I got Cydia now.


Now reading more on ultrasn0w.. Is this an app for windows or an app via Cydia.. ?

[iYeow]

Run Cydia for the first time, say Yes to Make my life easier, then all future shsh blob will be saved by Cydia server.
Now update Cydia Complete and search ultrasn0w to install, your bb is unlockable.
Once install, you can use any GSM sim card from all over the world on this iphone.
In order to preserve this unlockable baseband, only restore to custom firmware for future update, do not restore to stock firmware as it will update your baseband and eventually lose your ability to unlock.

[venkathh]

Thanks for the details.

I tried to upgrade to Custom 4.2.1 and it did not work.

* I put the phone in DFU mode
iClarified - iPhone - How to Jailbreak Using a Custom Restore IPSW and RedSn0w (Windows)
* Then with iTunes 9.2 i tried the restore to custom 4.2.1.
* It failed when it tried to verify with Apple.

Any suggestions ?

[iYeow]

Do you have 4.2.1 shsh blob, you need that to be able to restore to 4.2.1 ?
You must update your itunes to the latest first.
Run redsn0w 0.9.6 RC6, browse to stock 4.2.1 ipsw , check only the box dfu mode.
Once DFU is achieved, your iphone has a black screen
Now run itunes : shift + restore to cfw of 4.2.1

[venkathh]

I don't have 4.2.1 shsh blob. TinyUmberlla shows only 4.1 and 4.3.2.

Should i try 4.1 then ?
Should i start TTS Svr, when i launch iTunes?

[iYeow]

If you have 4.1, then you should have anything > 4.1 as Cydia will save all future shsh blobs eventhough you are not at it.
I suggest you create a custom firmware of 4.3.2 from Snowbreeze 2.6 and restore to it.
Unlock with Ultrasno0w again from Cydia.

I have a feeling the 4.1 is not the blob for this iphone. If you just did your 3.1 jailbreak for the first time, then you only have 4.3.2 blob.

In your latest version of TU, with your iphone plug in, highlight your device name on the left side and click save shsh.
Tell me what blob you see in TU

[venkathh]

You are awesome. It worked perfectly. Running 4.3.2 now.
Restore in progress.

To answer your Qn abt TU - I see 4.1 and 4.3.2.

Thanks.

[iYeow]

Glad to hear that it is working out for you.