Jarek,

To your initial question ("Has anybody ever succeeded with updating V7 firmware from a PDA ..."), yes, I just recently updated my V7, but from my Oudie2 running the latest version of SYM.

I punted on both WinPilot and the HX4700 years ago ... not what you wanted to hear I know, but Naviter does a superior job with both software updates and interoperability, *especially* with LXNAV.

ted/ES