Little help upgrading 3GS from 3.1

[Clon3isNasty]

Hey guys,

I was hoping I could get a little help in updating my current Jailbroken 3GS running OS 3.1 to one of the newer iOS. I don't need to do an Unlock, just a Jailbreak.

I saw the guide posted on using greenpois0n and figure that is the way to go, but was wondering if I was going to run into any problems updating the phone to 4.2.1? And since the current release is 4.3...what is the best way to update the firmware to 4.2.1? Can I still put the phone in recovery and SHIFT click Restore on iTunes to select the older firmware?

Sorry if the questions seem elementary. But I only jailbreak like once a year, and every time is different, hehe. Thanks for any info you can throw my way guys!

[Simon]

You can shift restore to 4.2.1 no problem but only if you have 4.2.1 SHSH.

[Clon3isNasty]

What is 4.2.1 SHSH?

[Simon]

Read my "about SHSH" link in my sig.

[Clon3isNasty]

Looks like I'm in luck and Tiny Umbrella says I saved the 4.2.1 SHSH. ;-)

So all I have to do to upgrade to 4.2.1 is Hit Start TSS Server in Tiny Umbrella and Shift Restore on iTunes?

[Simon]

Pretty much, you can check the "using tiny umbrella" link in my sig if you need in depth help with it.

[iB3NJ1]

TinyUmbrella is only showing 3.1.3 under saved SHSHs.
Can I not update to 4.2?

Im not a no0b lol. I was a member here when using Facebook Sign in. Never rejoined when they took that away.
Hence the 3.1.3 haha..

[Simon]

Did you press the save SHSH button in tiny umbrella? If you have 3.1.3 SHSH you should have them all the way up to 4.3.

[Clon3isNasty]

Jailbreak successful. Thanks for the help x98car.

[Simon]

No prob

[iB3NJ1]

Did you press the save SHSH button in tiny umbrella? If you have 3.1.3 SHSH you should have them all the way up to 4.3.

A long time ago when 3.1.3 jb first came out i pressed save SHSH in umbrella. Now it only shows 3.1.3 and the save button is greyed out
please tell me im not stuck till 4.3 jb comes out

[Simon]

Try it on a different computer if you can, it shouldnt be greyed out. That is strange.

[iB3NJ1]

my bad... on the left under connected devices i didnt have my phone hilighted...
once i highlighted it Save SHSH became un greyed...
Its doin its thing now...
fingers crossed...
and thanks x98car

[Simon]

no prob

[Clon3isNasty]

Ok after a successful jailbreak, I ran into a little snafu. iOS 4.2.1 does not play nicely with my Alpine iDA-X001 stereo system, which 4.1 and 4.3 do work. So my options are wait for a 4.3 jailbreak or downgrade to 4.1, which I do have the SHSH for. Not sure how long a jailbreak for 4.3 will take to release however.

Question is, if I decide to downgrade to 4.1, can I use the same greenpois0n software that I used to jailbreak 4.2.1 to do the jailbreak or is there something else I need to use?

[Simon]

You would have to use a older greenpoison on 4.1. Not sure of the exact version though. I always use redsnow 0.9.6rc8 for 4.1.

[iB3NJ1]

yep Im jb'd with 4.2.1 now thanks again x98car and modmyi.com

[Clon3isNasty]

You would have to use a older greenpoison on 4.1. Not sure of the exact version though. I always use redsnow 0.9.6rc8 for 4.1.

Does redsnow work the same way? I'd have to downgrade to 4.1 using SHSH blobs and Shift+Restore. Then run the redsnow 0.9.6rc8?

[Simon]

It works in a simliar way, but you would need to point redsnow to a 4.1 firmware for it to work. Then choose to install cydia and follow the instructions it gives you.

[Clon3isNasty]

Alright, I'll give it a try. Kinda annoying not being able to use the phone with the car stereo, which I understand is not an issue with 4.1 or 4.3

Not a question to do with jailbreaking, but maybe you know the answer. I noticed a huge decrease in battery life with 4.2.1 over the previous 3.1 I had installed on the phone. Is that normal? Wasn't sure if the version of iOS had an affect on battery life, since I'm not doing anything else out of normal that I wasn't doing on iOS 3.1