How do I update/rewrite the u-boot.bin or bl2_sd.pbl on the Bootable SD card for LS1043ARDB?

[ts1234]

How do I update/rewrite the u-boot.bin or bl2_sd.pbl on the Bootable SD card for LS1043ARDB?

I am using the OpenIL sdcard.img  to boot LS1043ARDB. 

u-boot.bin/bl2_sd.pbl was not found in the partitions. It has 2 partitions.

/dev/mmcblk0p1 contains Image and fsl-ls1043a-rdb-sdk.dtb
/dev/mmcblk0p2 contains the rootfs

[Pavel · Accepted solution]

Use the following command for writing to SD card:

sudo dd if=bl2_sd.pbl of=/dev/sdb1 bs=512 seek=8

sudo dd if=fip.bin of=/dev/sdb1 bs=512 seek=2048 // it is 0x800