I’m new here but not new to flashing new software on my Moto G4 phone. I’ve had it for over 3 years now and unlocked the bootloader right away and installed TWRP and the Resurrection Remix ROM. I read the install instructions for /e/ twice for the Moto G4 and after u make a backup in TWRP it wants u to use:
adb sideload filename.zip
I don’t currently have ADB working but is that needed now? TWRP lets u flash (install) a .zip ROM file from the micro SD card. It’s running TWRP 3.2.1-0
Marty