I update 5450 and after upgrade restart ipaq and nothing else. Ipaq totaly dead. Hard reset and nothing happend. How to repaire this problem?

Hi, frogstar, & welcome

Don't worry, you're not alone! I assume when you say you updated your PPC you're talking about a ROM upgrade? In which case, do a search on this site (the Search button is at the top of the page) for 'corrupt ROM' or 'ROM upgrade' & you should find lots of posts - one of them, at least, should help you.

If you still have problems then let us know & we'll try to help some more.

Good Luck!