[U-Boot] Replace Redboot with U-boot

[Romain Crausaz]

Dear, 

I found this message on the list : 

lists.denx.de/pipermail/u-boot/2012-March/120801.html

I m able to start u-boot from Redboot but I don't know how to download the u-boot-nand.bin from my tftp with u-boot and then copy it to the flash to erase redboot.

I m also using the KA-RO TX25 board. 

I have some ideas about how to do it but I m not sure and I don't have any J-TAG board in case something go wrong.

Thanks

Best Regards
Crausaz Romain