iUtilites.. google it (With iUtilities, I managed to change system version to 2.2 after Jailbreak OS 3.0beta2
zSHARE - iUtilities.rar
Follow these Steps :
1-Update to 3.0 iphone 3G or even restore
2-Use Quickpwn 3.0 Beta and select
Jailbreak ONLY. when finished the phone will be jailbroken and screen is in pink color waiting for activation ..close iTunes.
3-Open iUtilites if some error show or ask for any thing iqnore it and select (String Editor) a new windo will open then look for the CHANGE SYSTEM VERSION..CHANGE it to 2.2 and Type in the space Below it 5G77 buid 5G77 click ok... restart iPhone and your system version is now changed in iPhone to 2.2
4-Connect to iTunes and activate.iTunes will activate any version below 3.0 for non DEV as long as you have inserted the correct sim card.
5-back to iUtilities and redo process by typing the correct version for 3.0 build 7A25g then restart.
Do a fresh update or restore >>
This process fake iTunes and activated iPhone as if it was 2.2 and You will have a full fuction 3.0 Beta without beeing an Apple Dev....
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