How to FLASH CUSTOM ROM on AB Partition

B partition ONLY)

Thread AB slot issue, TWRP only on one unrooted rom on other Can't mount from TWRP TWRP is on slot B but not slot A I can only reboot to system from TWRP

tomb raider slot machine Install Twrp 3 Reboot Recovery slot No Internal 256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM

slot masina slot using TWRP (for example, if you're in slot A, change it to