Upgrading U-Boot via TFTP
From Kyle's Wiki
First of all, copy the file uboot.bin to your TFTP server. Then start your SheevaPlug, connect the serial console and type the following commands:
version setenv serverip 192.168.3.33 # IP of your TFTP server setenv ipaddr 192.168.3.32 bubt uboot.bin
The upgrade process will ask whether you want to change the environment:
**Warning** If U-Boot Endiannes is going to change (LE->BE or BE->LE), Then Env parameters should be overridden.. Override Env parameters? (y/n) n
Make sure to answer "n" here. Then reset:
reset
And then check the version again:
version