Flashing u-boot

From u-boot using tftp

You must have a tftp server setup for this:

setenv ipaddr <tftp server ip>
setenv serverip <target ip addr>
tftp 0x43000000 u-boot-devkit-recovery.imx
mmc write 0x43000000 0x42 0x800

From the kernel command line

Download the u-boot binary u-boot-devkit-recovery.imx:

dd if=u-boot-devkit-recovery.imx of=/dev/mmcblk0 bs=1024 seek=33