I see that cyfwstorprog.exe utility can write a firmware into eMMC/MMC boot area partitions 1 and 2. But once the firmware is written, can the boot partitions be deleted or updated? The "-delpart" command seems to works on user partitions only...
The delpart can be used to delete boot partitions as well. Please try cyfwstorprog.exe -vid:<VID> -pid:<PID> -delpart.
If it does not work, please create a Tech Support case.
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