GUIDE 
S7&S7Edge DRK fix&Root
1.download twrp below link
TWRP
2.flash twrp using odin
wipe data wipe cache 
3.copy file below link Disable_dm-verity_opt-encrypt_GalaxyS7.zip to otg
4.mount otg storage and install zip 
again wipe reboot again twrp recovery mode 
5.update super user zip 
root finished fix drk also
 
 
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