Upgrading 3GS from 3.1.3 to 4.x.x

[ParryD]

Hi,

I have 3GS Factory Unlocked on FW: 3.1.3 & Modem Firmware 05.12.01

Missed saving me blobs for 3.1.3 & ever since have been wary to updating to any 4.x.x reading all the issues floating around with every update.

But now wana to update my device to iOS 4.

Used TinyUmbrella-4.30.05 and could only save blobs for 4.1 & 4.3.1

Pls advice which FW version of iOS4 should I update to keeping it in Factory Unlocked state.

Also, what all should I take care before going in for the update?

[M3th0s]

If it is factory unlocked, you dont need to worry about an unlock.
Just download the new version of rednow from here Dev-Team Blog, upgrade your iphone to 4.3.1 and JB with redsnow
if you need to save anything use aptbackup or pkgbackup (from cydia).
Good luck!

[ParryD]

Thanks M3th0s for your reply. Is 4.3.1 working fine with 3GS?

[M3th0s]

Yes, I got a 3GS and it's is currently at 4.3.1 JB

[ParryD]

After a lot of review reading, 4.1 looks to be safe bet for 3GS. Correct me if I am wrong?

How can I JB the device? Should I be doing that before upgrading to any 4.x.x? My phone is of new bootrom.

Pls assist.

[pratt1503]

i would go to 4.3.1 too...

see here for guide iClarified - Jailbreak Wizard for iPhone, iPad, iPod, AppleTV

There is no point in going to 4.1 and if you did have any issues you could go back to 4.1 as you have shsh for that. But you will not have an issue with 4.3.1

And no jailbreak will effect your factory unlock

[ParryD]

Thanks pratt1503 for your reply. My device is of new bootrom.

So will there be question of tethered or untethered JB?

And no jailbreak will effect your factory unlock

Pls clarify?

[thazsar]

Thanks pratt1503 for your reply. My device is of new bootrom.

So will there be question of tethered or untethered JB?



Pls clarify?

It'll be untethered and you don't have to worry about an unlock cuz yours is factory unlocked. There's no carrier that it can be locked to regardless of which carrier SIM u use.

[ParryD]

Thanks thazsar. What iOS would you recommend for 3GS?

[pratt1503]

opps should have said will NOT effect your factory unlock

And as said no its not tethered

Thanks thazsar. What iOS would you recommend for 3GS?

You could ask all day long and get different opinions, but there are more 3GS users on here than any other phone and most of them have gone for 4.3.1 un tethered

[ParryD]

i would go to 4.3.1 too...

see here for guide iClarified - Jailbreak Wizard for iPhone, iPad, iPod, AppleTV

Here, in this tutorial on Step 5; Its asking for newer (fixed) model???

I guess by that it means the new bootrom.

[Amadomon]

Dude, relax. None of this bootrom stuff matters for you, since you are factory unlocked. Your steps are very simple:

1. Update through iTunes. Activate, sync, etc.
2. Jailbreak with latest redsn0w.
3. Enjoy.

[pratt1503]

Dude, relax. None of this bootrom stuff matters for you, since you are factory unlocked. Your steps are very simple:

1. Update through iTunes. Activate, sync, etc.
2. Jailbreak with latest redsn0w.
3. Enjoy.

Dont update in itunes as you will get 4.3.2

Follow all the steps in the link i provided

[ParryD]

On using TinyUmbrella:

1) It saved the following to the folder;
a) Folder - .cache
b) Folder - .known_devices
c) .shsh File - 3423727262990-iphone2,1-4.1
d) .shsh File - 3423727262990-iphone2,1-4.3.1

Now are these folders are of any relevance? Say, I re-save my shsh for 4.3.2 or with coming of any other iOS.
Can I delete these & keep the new ones?

2) Under Advanced should I uncheck 'Set Hosts to Cydia on Exit'?
In case, I don't JB my device or for that matter need to change any other settings?

Finally Updated my device to iOS 4.1. Thanks Guys.

As of now looks to be fine on the new OS.
Have not JailBroken it, will try it for a couple of days before going in for 4.3.1.

Any way we can stop multiple applications?

[thazsar]

To stop multitasking, Search Cydia by typing: Disable
A list will give you results for 'disable'
One of those results will be for Disabling Multitasking

1. Yes you can delete the previous SHSH files from TU but it's better if you just keep them. It shouldn't take much memory so there's no reason to get rid if them.

2. You r correct about unchecking the Host file if you wanna upgrade like normal w/ iTunes. You still might have to use TU to kick ur phone out of Recovery Mode, though.