Switch boot slots : r/oneplus
usage: fastboot [OPTION...] COMMAND... flashing: update ZIP Flash all partitions from an update.zip package.
SC8-FLUTE - EKF
Ex: The subdev spec markup string to select a WBX on slot B.
Xiaomi Redmi Note 5 Pro
Redmi 10C (fog) Reset EFS Flash In EDL Mode [By Server or Auth Account] [First Backup EFS].zip [Slot A & b ].