okey, so this sucks: I bought a used iPAQ 3850 on eBay, description fine, price even better. When I got it, however, the screen was not lighting up, even though it was displaying just fine and I noticed the wrong ROM version (4.00 for WM2003 instead of 3.00 for the 3850). I tried a rollback with a rom update utility from compaq, which I used on previous 3850s and it worked just fine, however, due to the fact that 4.00 is the wrong ROM v. for this machine, the utility won't permit me to reset it. It also seems there is no hard way to do this. Every attempt has failed. Now my suspicion is, that the backlight problem is related to the ROM v. ?? Any confirmation or idea to this thought? If anybody ever had this problem and/or has a slight idea for a solution, I'd be happy to try it, THANKS!