Flashing U-Boot

If you only need to flash a new version of U-Boot onto the eMMC, instead of flashing a complete image, then follow these instructions instead of running the librem5-devkit-flash-image script.

Using SDP

The version of U-Boot that gets flashed is files/u-boot-devkit-recovery.imx. Put the “Boot Mode” switch in the USB position:

cd librem5-devkit-tools
export PATH=$PATH:/path-to-your-workspace/mfgtools-build/uuu/
uuu uuu_scripts/u-boot_flash_librem5-devkit.lst

You can also just boot to U-Boot without flashing anything:

cd librem5-devkit-tools
export PATH=$PATH:/path-to-your-workspace/mfgtools-build/uuu/
uuu uuu_scripts/u-boot_librem5-devkit.lst