| Likely intended command | Review summary | |------------------------|----------------| | mkfs.ext4 /dev/sdX | Standard Linux filesystem formatter — safe and well-documented. | | fastboot format system | Wipes Android’s system partition. Works if bootloader unlocked. | | dd if=rom.bin of=/dev/mtdblock0 | Writes raw ROM image — powerful but dangerous. | | sysrom (custom build tool) | Check your buildroot, Yocto, or OpenWrt environment. |
The "Fmt" prefix could be a typo for "FM" (Frequency Modulation). fmtsysrom