Be careful when you update HX4700 ROM 1.0 to 1.10. If I read other forums, I would avoid this. My HX4700 was working fine since I bought it about 10 days ago. Saw update on HP website and updated. Well, what I can say, I couldn't do much anything after this. Aparently, there are some minor fixes, but causes problems with batteries.
I've tried to re-install ROM 1.0, again ROM 1.10, hard reset ... but no luck. Last chance was my live chat-help with HP Support Services, but no luck there neither.
I've just phoned HP Support and PS is coming to pick up my HX4700 to repair it.
Please, read a few problems here:
http://pocketpcmag.com/forum/topic.asp?TOPIC_ID=15894