Upgrade iPhone 3GS to iOS 4?

**mamoa** · 12-21-2010, 10:51 PM

Hi all,

I read almost every how-to but am still confused! I have an iPhone 3GS, 3.1.3. FW 05.12.01. It is locked so I jailbroke/ unlocked it (don't remember the software I used...). Now I want to upgrade to iOS4 but obviously keep the unlock! Is there a way?

Thanks,
Mamoa

**Cowboy** · 12-21-2010, 11:25 PM

Yes you need a custom ipsw

**mamoa** · 12-21-2010, 11:35 PM

Can you maybe give me a link for a how-to? Would appreciate it very much!

**Cowboy** · 12-21-2010, 11:36 PM

I cant give you a link to a custom ipsw just search for one via google.
But what type of computer do you have?

**mmracing1981** · 12-21-2010, 11:56 PM

I am in the same situation as mamoa. I do not have shsh's saved on Cydia cuz I just got the phone. Is there a way to upgrade to at least 4.0 and keep the unlock? Can I just use pwnage and create a custom firmware for 4.0 or 4.1 and update without saved shsh's? There is so much information out there right now, it is hard to process and find the right applicable info.

**iYeow** · 12-22-2010, 12:02 AM

No, don't restore yet or you will be sorry.
Download tiny umbrella, plug your iphone in and click save shsh first.
If you have only 4.2.1, then you can only restore to stock or custom firmware of 4.2.1 and nothing else.

And if you have the new bootrom, you will be stuck at apple logo. You will be joining these members here trying to get back to working iphone for days.

**mmracing1981** · 12-22-2010, 12:17 AM

I am old bootrom. I only have 4.2.1 shsh's saved. Thanks for the info. Cleared everything up nicely.

**iYeow** · 12-22-2010, 12:33 AM

You should not do any restore to custom firmware , wait for a better jailbreak. This Pwnage tools 4.1.3 is only a half jailbroken tool. It does not install Cydia and you will have battery drain.
The new jailbreak should be out before christmas.

**Cowboy** · 12-22-2010, 12:36 AM

Originally Posted by iYeow

You should not do any restore to custom firmware , wait for a better jailbreak. This Pwnage tools 4.1.3 is only a half jailbroken tool. It does not install Cydia and you will have battery drain.
The new jailbreak should be out before christmas.

Lets hope would cut down on half the threads lol

**iYeow** · 12-22-2010, 12:39 AM

Yeah, I have to keep repeating the same thing again. I am so tired, going to bed now.

**Cowboy** · 12-22-2010, 12:42 AM

Lol i know right. Thats why i enjoy the hardware and att sections something always new not to repetitive.

**mamoa** · 12-22-2010, 01:01 PM

Alright so bottom line: wait till new jailbreak, that's what I get from that!

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