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6) The following commands will flash the new XLoader and u-boot (that you put in the SD card) according to the latest MTD partitions. Note that you might need to use different MTD partitions, in which case the size and offset arguments of the 'erase' and 'write' commands below need to be adjusted (see the u-boot manual for 'onenand erase' and 'onenand write' command syntax).
<pre> mmcinitmmc init
fatload mmc 0 0x80300000 x-load-ddp.bin.ift
onenand erase 0 0x80000
onenand write 0x80300000 0 0x80000
onenand erase 0x80000 0x180000
onenand write 0x80300000 0x80000 0x180000
</pre>
7) Remove the SD card and power cycle the board. XLoader and u-boot should start. If you got lucky, your old environment might still be there. Use printenv to see what's left of it. If not, then you'll need to restore your old environment. The easiest way is to simply type the whole thing back and use saveenv.