# Inside kernel source tree cd bootable/bootloader/preloader make PROJECT=y22_defconfig make Output:
build/y22/preloader_y22.bin | Method | Command / Tool | |----------------|-----------------------------------------| | SP Flash Tool | Download tab → select preloader binary | | Fastboot | fastboot flash preloader preloader.bin | | Raw dd | dd if=preloader.bin of=/dev/block/mmcblk0boot0 |
mmcblk0boot0 (eMMC boot partition) or SPI NOR flash offset 0x0 In the Y22 BSP (Board Support Package):
strings preloader_y22.bin | grep "PRELOADER_VER" Sample output: