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  1. expert2go's Avatar
    Guys, I have iphone 4 but it is using diff carrier, I would like to downgrade it to v 4 so that I can make it use any carrier network, pls assist.
    2015-07-28 12:48 AM
  2. Bo Troxell's Avatar
    smaller sig.png
    2015-07-28 01:07 AM
  3. bbrks's Avatar
    Even if you do it, it wont help you to unlock it. When upgraded to 7.1.2, the baseband upgraded also to 4.12. and for that baseband there is no unlock. The only remaining option you have is factory unlock, but depending of the carrier it could cost a bit more.....
    2015-07-28 06:55 AM
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