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Guide:Install KitKat International B510 ROM to B506/B507 firmwares

5th October 2014, 12:50 AM |#31  
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Hi, sorry for the bump but I need some guidance.

I'm running a Chinese B508 now and I want to install B512. If I understood correctly, acoording to the file included in the official release .zip I have to be in a Bxx firmware in order to upgrade to B510 (or B512). My question is this: the bootloader in phone is locked (I check using this method) and the method decribed here to unlock it doesn't work for me. Is it necessary to have the bootloader unlocked in order to install an official firmware? If so, is there any other way to unlock it?

Thanks.
 
 
5th October 2014, 08:33 AM |#32  
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No,your bootloader don't have to be unlocked to flash official firmware.
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5th October 2014, 04:08 PM |#33  
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Thank you, @gregysk. I've been asking for weeks.

EDIT: @gregysk, I tried flashing the B132 firmware on my P6 (coming from Chinese B508) and I got this:

-checking sd update pkg...
-huawei sd card update fail.....
-cust copying files...
-copy cust files successed
FAIL

Any idea as to what might wrong?

Thanks in advance
Last edited by Adrianrff; 5th October 2014 at 05:00 PM.
7th October 2014, 05:57 AM |#34  
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Read thread from the begining,becuse you are doing downgrade from KK to JB you must follow guide from the first post.
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