This page helped me revived my bricked C860, so 1000 thanks to DrWowe. It took more, too, so perhaps my experience will help someone else. First lesson -- don't knock your Zaurus onto the floor accidently while flashing. I'd flashed the C860 dozens of times before, but a significant knock during flashing finished it, even though the power cable didn't come out. None of the regular flashing or service menu commands worked anymore, but the led's still flashed sometimes. Fn+D+M got me the service menu again. The translated information page seems to indicate that this key sequence bypasses the NAND loader, so I assume that was scrambled.
Once I got a service menu, I thought the rest would be easy. I put the TriSoft NAND image on a CF card and tried a NAND restore, but the Z couldn't read either of the CF cards I tried, both of which worked fine in a Windows card reader. CF diagnostics reported lots of errors and concluded that the CF card was "NG" -- "Not Good" apparently. That sounded like the end of the line, but having little to loose, I played around with the diagnostic menus. The "extra menu" leads to a new page, and the "Zaurus" option on that page led to four more pages of menus, some overlapping the initial three page set, some new. I tried the option to erase NAND flash memory, which seemed to work, and got rid of some of the error messages I had been seeing, but still left my CF card unreadable. I then copied my NAND image onto still another CF card -- a Sandisk card, which people have sometimes found a problem on the Z. For some reason, the Z could read that card, so the flash worked. But the Z still wouldn't reboot from the restored image, only from the reboot option on one of the diagnostic menus. Finally, I flashed the recent pdaXrom beta and that seemed to remove the last remnants of the damage, and all seems back to normal.
As to why the Sandisk card worked, I'm not sure but have a vague recollection that at one point I formated it to ext2, then reformatted it to FAT on the Z. The other cards were likely either formatted at the manufacturer or by Windows. So the second lesson is to keep trying different CF cards formatted differently if the NAND restore program can't read your image. Maybe a card formatted on the Z works better than others in some circumstances. Hope this is useful to someone.
