Unroot & replace patched boot.img with original

pfavayi
Posts: 44
Joined: Sun Apr 30, 2017 2:17 pm

Unroot & replace patched boot.img with original

Postby pfavayi » Thu Jul 13, 2017 6:14 pm

I flashed marshmalow (android v6.0 ) on my blackview P2 , rooted it with the root method provided in development options (actually superSU is the root binary), installed flashify and gave it root , then used flashify to install the twrp 3.0.3 img file.

Everything worked well so far

I then unrooted the phone successfully through the development options and the superSU app.
But when I tried to flash magisk through twrp , the flash aborted because the boot.img was patched.

I don't understand how the boot.img can still be patched when I uninstalled superSU per-instruction.

How can I unroot superSU and make sure it replaces the patched binaries with the original boot images ?

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