Jb 3gs 3.0.1 --> 4.0

[Moshe1010]

Hello,

I have iPhone 3GS old bootrom (checked with iDetector) with 3.0.1 version (yes it's old). The phone has JailBreak already from ultrasn0w and now I want to upgrade to iOS 4.0 ( I read that 4.0.1 is not possible if you don't have SHSH, correct me if i'm wrong)
I searched here and other places and I just want to check that I'm doing everything right.
I just need to install sn0wbreeze-V1.7 ( I'm a WIN user) and download iOS 4.0 (8A293) and that's it?
( I don't care for Unlock, I'm with AT&T carrier)
Thank you.

 

[Applejuiced]

You can put your phone in restore mode and restore it thru itunes to custom 4.0 created with pwnage tool.
Assuming you're JB now on 3.0.1 still.

 

[Moshe1010]

Yes I still have JB for my 3.0.1, where can I get this custom 4.0 firmware? I just need to go to my iTunes and press on the restore button with shift, chose this firmware and that's it?

 

[Applejuiced]

Yes, but before you hold shift and click restore you need to put your phone to restore mode. Follow this:
1.Turn off the iPhone
2.Hold down the Home button and then plug your iphone to your computer with iTunes already open.
3.iTunes will prompt you to perform a software restore and that it detect an iphone in restore mode.

You can download custom IPSW's for iphone 3GS and 4.0 online.

 

[Moshe1010]

is this a good one?

 

[Applejuiced]

Looks good.
But take the link down cause we're not supposed to be linking to custom IPSW's

 

[jav6454]

is this a good one?
[baleeted url]

Try looking in one of the stickies above for the iPhone Software links. Much safer as they are directly connected to Apple's servers.

 

[Applejuiced]

Try looking in one of the stickies above for the iPhone Software links. Much safer as they are directly connected to Apple's servers.

Actually she's not looking for stock ipsw's but already cooked and JB with pwnage

 

[jav6454]

Actually she's not looking for stock ipsw's but already cooked and JB with pwnage

Try PMing me if need be.

 

[Moshe1010]

Looks good.
But take the link down cause we're not supposed to be linking to custom IPSW's

sorry didn't know that, thank you for your help

 

[Applejuiced]

Welcome.
Good luck.

 

[Moshe1010]

I'm getting error 1600, tried from 2 different computers + tried install iTunes again and nothing, any suggestions?

 

[Applejuiced]

See if this helps.

 

[Moshe1010]

I already got it, there are 2 different modes that you can put your iPhone, the first one is DFU (what I did) and second is restore only (when you see iTunes logo and a cable on your screen), so my screen was black because I put my device in DFU mode all the time and this was wrong.
Everything is fine now and it's working, thank you everybody for your help.

 

[Applejuiced]

Oh, that explains it then.
Glad it worked out.
Enjoy

 

[sezratd]

Hey

I got the same error 1600. What did you do?