is it possible to restore to older firmware?

**Cerebro** · 06-23-2010 12:02 AM

i was on 3.1.3 old bootrom, think i may have used spirit though about a month ago as I was having problems booting...

is if possble to install an older custom firmware on my 3GS or am i stuck where I'm at?

My screen is stuck on the connect to itunes screen also as I tried to restore to ios4 and it wouldnt work...

what is my best course of action?

**john-s** · 06-23-2010 05:41 AM

Do you have 3.1.2 firmware shsh blobs saved or available in cydia?

**Cerebro** · 06-23-2010 10:11 AM

i sent a good bit of time on this last night. yes i have shsh blobs and was able to downgrade to stock 3.1.3. however i cannot jailbreak since. obviously i dont want to use Spirit (so I can upgrade to ios4) so i tried pwnagetool but iTunes wont allow me restore to the custom firmware, just getting thew 1600 error again and again...

**Olethros** · 06-23-2010 10:59 AM

Originally Posted by Cerebro

i sent a good bit of time on this last night. yes i have shsh blobs and was able to downgrade to stock 3.1.3. however i cannot jailbreak since. obviously i dont want to use Spirit (so I can upgrade to ios4) so i tried pwnagetool but iTunes wont allow me restore to the custom firmware, just getting thew 1600 error again and again...

You need to be able to restore to OS 3.1.2 before pwnagetool can direct jailbreak. The hole that is used to direct jailbreak the 3GS was closed with the 3.1.3 update.

This is why such a big deal was made about getting a 3.1.2 SHSH blob backed up before Apple stopped signing 3.1.2

**Cerebro** · 06-23-2010 11:10 AM

I did back up blobs. so itunes will allow me select stock 3.1.2 and goes through the restore process but when it gets to around 70% then i get an error 1015 message and dumps me back to recovery screen... not sure how to resolve this other than restoring to 3.1.3

**Olethros** · 06-23-2010 11:14 AM

Originally Posted by Cerebro

I did back up blobs. so itunes will allow me select stock 3.1.2 and goes through the restore process but when it gets to around 70% then i get an error 1015 message and dumps me back to recovery screen... not sure how to resolve this other than restoring to 3.1.3

See http://www.hackint0sh.org/f137/130802.htm for details on how to post your restore logs.

1015 is not a problem - it just means it can't downgrade baseband. Simply exit with iRecovery redsn0w lite or iREB (which we don't support here)

**Cerebro** · 06-23-2010 11:23 AM

thanks for that.

itunes 9.2
mac osx 10.64
iphone 3gs (early bootrom)

and log as follows...

#1015609 - Pastie

**Cerebro** · 06-23-2010 11:24 AM

that last try was trying 3.1 btw... same result, error 1015

**Olethros** · 06-23-2010 11:50 AM

As I said, that 1015 is because you can't downgrade baseband.

To fix this: run rslite or irecovery.

get rslite: http://iphwn.org/rslite102semi.zip

Run rslite via Terminal.app:

Then type:

Code:

setenv auto-boot true
saveenv
reboot

You should get an output like the listing below.

% rslite
rslite v0.2 – by the iPhone Dev Team, 2009.
–THIS IS AN UNSUPPORTED TOOL–

Connecting…
[Recovery] setenv auto-boot true
[Recovery] saveenv
[Recovery] reboot

**Cerebro** · 06-23-2010 01:01 PM

thank you friend, you are a genius. this has worked flawlessly.

i really appreciate the time and effort you took to point me in the right direction....

Sauriks server helped me downgrade to 3.1.
GeoHots blackra1n got me jailbroken once more.
Dev Teams pwnagetool 4 got me a nice new jailbroken iOS on my 3GS

so thanks to all you guys... Dont you just love the jailbreak community...