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Could someone clarify this for me please

sk8mash

sk8mash

macrumors 6502a
Original poster
Dec 1, 2007
953
110
England
If I walk into O2, buy a Pay&Go iPhone 3G, will I be able to unlock it to any sim on its supplied base band with firmware 2.2.1? I have looked on the dev team site, and it is a bit confusing. A simple yes no answer will be fine, or if you have a little more time, tell me if its yell0wsnow, or pwnage I need to use to unlock it.

I used to keep up with iPhone unlocking, but lost track of it a while ago!

Thank you for your time.
 
sk8mash said:
If I walk into O2, buy a Pay&Go iPhone 3G, will I be able to unlock it to any sim on its supplied base band with firmware 2.2.1? I have looked on the dev team site, and it is a bit confusing. A simple yes no answer will be fine, or if you have a little more time, tell me if its yell0wsnow, or pwnage I need to use to unlock it.

I used to keep up with iPhone unlocking, but lost track of it a while ago!

Thank you for your time.
Click to expand...

Click Me and you will get help with actually doing jailbreaking/unlocking of it.

As far as what baseband or firmware it has, its very random. You may be lucky enough to get the 2.2.0 firmware and if this is the case you will be able to unlock. However, if you get an iPhone 3G with 2.2.1 you will not be able to unlock.
 
A brand new iPhone carries the new baseband which is currently not working with the yellowsnow.

Of course, if you buy an older brand new phone, luck could prevail.
 
Oh OK, so there is no way to downgrade the baseband? The people here at macrumors are defiantly the most helpful on the internet!
 
jav6454 said:
Click Me and you will get help with actually doing jailbreaking/unlocking of it.

As far as what baseband or firmware it has, its very random. You may be lucky enough to get the 2.2.0 firmware and if this is the case you will be able to unlock. However, if you get an iPhone 3G with 2.2.1 you will not be able to unlock.
Click to expand...

After reading that link, it seems that 2.28.00 is the only baseband that can be unlocked, which was the baseband with 2.2 software update. So if I bought a 2.2.1 iPhone it wouldn't be unlockable. Am I right in thinking you could prevent the baseband from upgrading using pwnage when upgrading from 2.2 to 2.2.1?

Thanks again.
 
sk8mash said:
After reading that link, it seems that 2.28.00 is the only baseband that can be unlocked, which was the baseband with 2.2 software update. So if I bought a 2.2.1 iPhone it wouldn't be unlockable. Am I right in thinking you could prevent the baseband from upgrading using pwnage when upgrading from 2.2 to 2.2.1?

Thanks again.
Click to expand...

Thats right, you can upgrade to 2.2.1 using a custom firmware made in Pwnage tool. Just did this on Friday, took me a few attempts as iTunes kept giving me errors, but got it to work in the end.

By the way, I was under the impression that the pay as you go o2 iphone is factory-unlocked?! That's why you pay the full price for it isn't it?!

Fabian
 
fabian9 said:
Thats right, you can upgrade to 2.2.1 using a custom firmware made in Pwnage tool. Just did this on Friday, took me a few attempts as iTunes kept giving me errors, but got it to work in the end.

By the way, I was under the impression that the pay as you go o2 iphone is factory-unlocked?! That's why you pay the full price for it isn't it?!

Fabian
Click to expand...

So if I made a custom 2.2.1 firmware with the 2.28.00 base band and loaded it onto a 2.2.1 iPhone 3G bought from O2, I would be able to unlock it using yellowsnow? I take it thats what you did?

Thanks again.
 
If you are buying a retail 2.2.1, it will have the latest (and unlockable) baseband.

So that means you cannot make a custom firmware with the baseband of your choice because you would then be downgrading, and currently that is not available.
 
MistaBungle said:
If you are buying a retail 2.2.1, it will have the latest (and unlockable) baseband.

So that means you cannot make a custom firmware with the baseband of your choice because you would then be downgrading, and currently that is not available.
Click to expand...

you mean un-unlockable? ;)
 
sk8mash said:
So if I made a custom 2.2.1 firmware with the 2.28.00 base band and loaded it onto a 2.2.1 iPhone 3G bought from O2, I would be able to unlock it using yellowsnow? I take it thats what you did?

Thanks again.
Click to expand...

no, that's not right. if you got an iPhone which still has 2.2 on it and you made a custom 2.2.1 firmware which has 2.28.00 baseband, then you could use yellowsn0w.

the baseband can't be downgraded so unless you can get your hands on a new phone still running 2.2 you're out of luck.
 
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