How to manually flash official firmware to Samsung galaxy S7 and galaxy S7 edge (ALL variants) using Odin3.
This guide will help you to unbrick, update, back to stock or downgrade any galaxy s7/s7 edge (Global G930F G935F, Verizon G930V G935V, T-Mobile G930T G935T, AT&T G930A G935A, Sprint G930P G935P, US Cellular G930R4 G935R4, Canada G930W8 G935W8, ...)
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Instructions and links : http://www.w0lfdroid.com/2016/06/How-...

Donations : http://tinyurl.com/qfbenh4 thank you
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Notes :
~ Upgrading won't wipe your data, but back it up before starting incase something goes wrong while flashing.
~ Downgrading will wipe your data
~ Bootloop after flashing can be fixed by resetting your phone from recovery mode.
~ This won't restore your phone's KNOX WARRANTY VOID from 0x1 to 0x0
~ Use it at your own risk.

If you have a question, please provide me with your phone information ex : model number, build number, ...
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Flash official firmware for galaxy S7 by Odin3
Downgrade galaxy S7 Edge
Flash 4 files firmware (BL, AP, CP, CSC) to galaxy S7
Restore galaxy S7 to stock ROM