SM-J400F U8 AutoPatch Firmware By [www.testedfirmwares.com]
Samsung J400F Autopatch firmware 100% Tested And Workable
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In this post, I will show you how to make an autopatch firmware for your Samsung smartphone. in this method, you can modify the original firmware and patch many new files, and generate the new file and flash by ODIN tool. if you have any problem for use these all files then please comment below.
Samsung Autopatch Method Full Video Guide