mkbootimg --kernel bootemmcwin.raw --ramdisk bootemmcwin.raw --dtb emmc_fixup.dtb --pagesize 4096 --header_version 3 --hash sha256 --output boot.img.extra_quality
If you are a custom ROM enthusiast or a developer working with TWRP backups, you have likely encountered the .emmc.win file extension. This format is essentially a raw partition image used by Team Win Recovery Project (TWRP) for backups. bootemmcwin to bootimg extra quality