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Highest firmware that can be jailbroken and unlocked for TMobile?

D

dellavoce

macrumors regular
Original poster
Oct 14, 2007
127
0
Anyone know? I'm selling my 3GS and I need to prepare it for my buyer
 
Any, if you get a "sandwich card". But no idea if this will be possible with the micro-sim on the new iPhone 4. (But why would you want to put an iPhone 4 on tMobile?)

This is the only way I would do it, since it requires no jailbreak. I advised a friend of mine to do it with his 3GS and it worked like a charm. So, should work for you.

A "sandwich card" (MY term) is a very thin card that you slip in with your SIM card. They're like $20 online. The one I recommended was shipped from England.

Some of these require that you cut a trace on your SIM. For just a little more money, there is one that doesn't require the cut.
 
No, no, my new iPhone 4 is on ATT. I'm selling the 3GS to someone who wants it on TMobile. She asked to have it jailbroken on the highest firmware that can be unlocked. I'm good with jailbreaking but I don't know anything about unlocking
 
The new ultrasnow can unlock any baseband on 3g/3gs, so as long as you can jailbreak it, the unlock is super easy.
 
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