First, boot into TWRP, make a backup ROM (if you want to restore ROM if something goes wrong), then wipe system, wipe, install ROM, and reboot. That’s it! Don’t know how to do this? See our fail-proof TWRP installation guide first.
For SM-G920I or SM-G920G, also install call fix AFTER installing ROM!
For SM-G9200 or SM-G9208, also install Dual SIM fix AFTER installing ROM!
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