C860 Seemingly Gone For Good

I'm deeply saddened. I wanted to try pdaXrom on my (almost new) 860, so I followed the instructions exactly. I've installed and upgraded OZ a number of times, so it was really nothing new, except for the part where the install finished and my handheld froze. Now, it won't turn on.

I think I've tried everything... I haven't been able to find any detailed descriptions of any of the emergency recovery options... the D+M and all of those... I've tried everything I could find, but I haven't been able to get it to do anything, except briefly (maybe a sixth of a second) flash the charge light when I plug in the power supply.

I don't know if I'm not doing them right, but people seem pretty confident that these things can't be truly bricked. I use my Zaurus all the time, throughout the day. I feel lost without it. I would like to retain the data that's on it, but I would rather get it back empty and have to start over than to be without it.

Does anyone have any information that might be useful?

Thanks,
Ashley