HP has released ROM 1.10 for the iPAQ 5500 series devices. Fixes and enhancements include:
� Connectivity: Connectivity bubble displays GPRS status correctly when connected through proxy � Connectivity: JavaScript event handler fires correctly � Connectivity: PIE correctly encodes URLs with "&lang" references � Contacts: Removes duplicate radio telephone number from Contacts List view � Inbox: Short messages are not duplicated � Inbox: SMS messages with alphanumeric address are parsed correctly � Localization: Errant character no longer inserted by Action button on KOR � Settings: Device properly returns to power off state after an alarm has fired � SDIO driver update for the SDIO Camera and Socket Scanner � Reduced power consumption while in hibernation mode. � Bluetooth build 1.4.1.60 � Removal of currency calculator � WLAN Driver update build 3.2.4.130 � Several connectivity fixes � Several localization enhancements � Settings: CHT owner info can be shown on power-on � Shell: Alarms and meeting reminders use high-quality MIDI playback � Shell: Improves data integrity when file system is nearly full � Sync: Improves USB reliability
See the HP link above for a full list. Like all ROM upgrades, this will require a hard reset and you cannot restore from a backup from a ROM 1.x device.