thanks for both replies and advice, not booting with any usb attached but if it is corrupt dash how come when i flash back my original nand i can boot that with no e79 or e71 or any errors at all ? I have 3 copies of my original nand all with 2 bad blocks error 250 in the same place so i am guessing that all 3 backups are the same although when i check with total commander each image shows it has 6 differences, would the nandcompare tool build a correct image from my 3 and do i still extract and inject the kv and config file and inject, or would i just be better like u said booting into xell and try rebuilding in linux, would i use the gentoo live cd v2 is this ok for a falcon or is it just for xenon.
the errors that occur during reading writing are random and dependant on alot of factors it can occur during the dumping of any section of the NAND
you have a dump that has all of the important files intact to run without any major problem, errors could be in free space or a rarely used file (secdata.bin etc)
if i was you id build an XBR image, inject kv and config blocks then use nandpro to move the last bad block
command
nandpro XBR.bin: -r16 0x3FF.bin 0x3FF 1 read bad block
nandpro XBR.bin: -w16 0x3FF.bin 0x3FE 1 write bad block to 0x3FE
then write to NAND using flash360 if your XBR boots or lflash if you can get linux running
0x3FF is the very last block and is usually a remapping block for other bad blocks the remaps start backwards from here so in theory as long as you remap it, it should be fine
more as i think of it unless your nand develops a bad block and the block is moved automaticaly during a flash update, you should have no problem, in fact remapping 0x3FF to 0x3FE will prevent that problem in the future