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-   -   Downgrade from os 7.1 to os 7 blackberry 9900??? (http://www.blackberryforums.com/rim-software/259905-downgrade-os-7-1-os-7-blackberry-9900-a.html)

cmr 06-08-2012 04:39 AM

Downgrade from os 7.1 to os 7 blackberry 9900???
 
Hi!

how do i downgrade my bb9900 from os 7.1 to 7.0. I bought a 3500mh battery and it doesnt work with the latest OS. My BB is unlocked and my carrirer is Tele2 comviq (its a Swedish carrier).
I tried to downgrade the OS from the phonemeny but i dont have the "downgrade" button in "options, device".

Need help plz!

cmr 06-08-2012 12:45 PM

Re: Downgrade from os 7.1 to os 7 blackberry 9900???
 
If i restore my bb9900 from before it was upgraded , shouldnt that work?


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