Will Restoring 3.1.3 update the baseband

[JPaufix]

Simple questioned I purchased an Iphone 3gs which was Jailbroken and unlocked. The person I bought it from did a master reset so now the phone is stuck on the apple logo. He said it was on 3.1.3 or 3.1.2 he is not sure but he has had the phone for over a year. So I am sure it is an older version. If I restore the firmware to 3.1.3 through Itunes will it update the baseband to the 5.15.04 or will it maintain the previous baseband? I need the unlock so any help would be appreciated.

[i.Annie]

It will not update the baseband to a non unlockable state.

You will however need SHSHs to restore it to anything besides 4.3.2.

You can check for SHSHs with TinyUmbrella by clicking "Save SHSHs" but if the owner before did not save SHSHs prior then the device cannot be restored to any fw except 4.3.2. With that being said, you'll want a restore to custom firmware for 4.3.2 then to keep the baseband from upgrading.

Edit: pwnagetool custom 4.3.2 fw is tethered.

Edit: pwnagetool custom 4.3.2 fw is tethered.

[JPaufix]

OK checked TU and it says saved SHSHs and Has the device number but does not show anything in the box so pretty much screwed on the easy way out.

[kraziebone]

Does Tiny Umbrella still have an option that will prevent the iPhone's baseband from being updated? I used it once and it worked well but I know it was broken in 4.1 but I didn't know if it was ever brought back. If so you could use that

[JPaufix]

not that I see just start tss server and save shsh

[i.Annie]

TinyUmbrella only preserves bb for iPhone 4 without the use of custom fw.

In the log when you clicked save SHSHs it told you nothing was saved?

[JPaufix]

Box is blank

[i.Annie]

It doesn't say ANYTHING at all? That's weird. It should still say something whether it found them or not.

You're looking in the "log" not the box when you click display SHSH right?

[SnoopinNewton]

Not True If He Has 4.1 Saved He Can Make A Custom Firmware With Sn0wBreeze Then PWN DFU It Then Restore...

If You Can Get A Custom Firmware Made For The Device And You Have SHSH Saved You Can Always Restore.....

I Usually Use Custom... Its Just Easier...

[i.Annie]

What's not true? I already said what you said. Aside from that, we are trying to figure out if he has SHSHs right now.

[JPaufix]

Yes the big white box is blank when I plug my 3g in I have stored shsh for everything from 4.0 and up. But nothing shows up for the 3gs. The only info it gives me is the ECID but that is all. Is there another way to check if it is stored on Cydia's server?

[i.Annie]

Well it isn't about if they show up in Cydia, we want the SHSHs to show up bc then they're pulled into TU.

Have you tried another computer? If all else fails you can attempt a restore with the TSS server running to the fw you know you have SHSHs for. It may or may not work without pulling them into TU.

[JPaufix]

Yeah I have thought about just going for it. I don't know what was used to jailbreak the phone with or I would follow one of the SnOwbreeze tutorials.
I really don't need to update the firmware just need to preserve the unlock. I did a 3g before christmas and had no problems it did not update the baseband. But that was with itunes v9 not the v10 so just not sure if it automatically updates baseband anytime you restore if it only does it when updating to new firmware.

[i.Annie]

Right well the key to preserving baseband is custom firmware, always.

[Mes]

Great firmware and baseband version information:

Firmware - The iPhone Wiki