Alex learned this happens when a flash drive’s controller gets corrupted. The controller is a tiny chip inside that tells the computer how to talk to the memory chips. In this drive, the controller was a (also called Phison 2303 or UP13–UP19 in older tools). Without the right firmware, the drive was useless.
: Click Save to return to the main menu, then press Start . Green : Success. phison mpall v3720b ps2251 flashboot repack
| Situation | Better Choice | |------------|----------------| | 68 (common in Sandisk clones) | Phison’s “ST Tool” (ST_2.0.93) | | You only need to fix partition corruption | Windows DiskPart → clean command | | You want to change the USB’s serial number | MPALL can do this, but “Phison SP Tool” is safer | | Your drive has a different controller (e.g., Alcor AU6990) | AlcorMP tool | | You’re on macOS or Linux | Use badblocks + mkfs for low-level; or run MPALL via Windows VM with USB passthrough | Alex learned this happens when a flash drive’s
The ordinary MPALL v3.72.0B lacks these three FlashBoot-specific features: Without the right firmware, the drive was useless