Question firmware flashers and custom rom install

[slopenut]

New to oneplus 9 pro came from oneplus 6t would like a precise guide on how to install custom roms not sure how to use firmware flash tools on my LE2125 AA/Global phone which is on of the steps to flash Watchdog rom. Currently stock OOS 13.1.0.500 unlocked bootloader rooted and on twrp 3.7.0-12.1 also prefer to use my mac to run platform tools but also have a windows 10 laptop. I can't seem to search threads on xda "search this thread" comes back with a xda's forum search not just within the thread.

 

[Psk.It]

New to oneplus 9 pro came from oneplus 6t would like a precise guide on how to install custom roms not sure how to use firmware flash tools on my LE2125 AA/Global phone which is on of the steps to flash Watchdog rom. Currently stock OOS 13.1.0.500 unlocked bootloader rooted and on twrp 3.7.0-12.1 also prefer to use my mac to run platform tools but also have a windows 10 laptop. I can't seem to search threads on xda "search this thread" comes back with a xda's forum search not just within the thread.

as all other 1+ phones, to unlock bootloader is 1 line of command prompt
You need android platform tools (instead of adb minimal)
once you unlocked the bootloader you have to flash a custom recovery (there is the payload dumper tool to extract them directly from the zip you are going to flash)
If you are already on latest firmware, i think you don't need flashing firmware, in any case, it's just a batch to be executed from recovery (the crDroid ones are good) to be flashed once

 

[slopenut]

as all other 1+ phones, to unlock bootloader is 1 line of command prompt
You need android platform tools (instead of adb minimal)
once you unlocked the bootloader you have to flash a custom recovery (there is the payload dumper tool to extract them directly from the zip you are going to flash)
If you are already on latest firmware, i think you don't need flashing firmware, in any case, it's just a batch to be executed from recovery (the crDroid ones are good) to be flashed once

Thanks for the reply. I am unlocked and rooted and on twrp recovery. I learned to extract the crdroid firmware flasher and execute the .bat file to flash firmware I think to both slots like back in the oneplus 6t days I then wiped and sideloaded the custom rom.

 

[TheGhost1951]

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Magisk is the app for rooting...