I got my SL-C3200 two days ago, and have of course been looking into different ROM varieties.
I figured Debian (Titchy?) is what I want, but I couldn't get networking to work on the default OS so I figured I'd first install pdaXrom because I understood it to be a little more efficient for configuration.
First I tried to flash u-boot, but something went wrong and the system wouldn't start up. I fooled around a little while with the device, reading the forums, and found that hard reset fiked the problem and I could boot back to Sharp ROM (or some derivative, heck if I know). However, I guess u-boot didn't install.
Then I attempted the u-boot install again, and this time I think it went right, but after it confirmed that the install succeeded I pressed and held OK because the instructions said to do this on the next boot, and I thought I should press it sooner because the system was going to boot. I guess it took the OK key as "enter" because the lines scrolled off the screen and whether this has any relevance to my problem I don't know.
The system "booted" with a white screen and nothing happened. I proceeded to do a hard reset but that didn't help. The device just wouldn't start up anymore. The yellow LED wouldn't light up with the AC power connected. It was just dead.
Naturally I panicked a bit wondering if I had bricked my Zaurus, but then found (searching this forum) how to get into the emergency system (Fn+D+M ritual), which was of course a relief to see working.
I downloaded the NAND backup from Trisoft.de and restored it into my Z from an SD card.
Now the problem is that I don't know how to exit the emergency system screen. I read somewhere that a hard reset should make it boot normally again, but that didn't work for me, the ES screen is still there when I press the power button!
Any advice in regards to getting this thing running as intended is greatly appreciated...
EDIT: By "emergency system" I actually meant the Diagnostics menu.