If you are not having problems with your device that a ROM update addresses, then I recommend you leave the ROM as it is. Also, when you review ROM updates, make sure you are looking at the ROM update that matches your device exactly, the language on your device precisely, and the OS of the device. [The hx2750 could be running windows mobile 2003se or WM5.0.]
See this article for a discussion of
Pocket PC Networking.