Following last week’s ROM update, HP has released a firmware update for the iPAQ rx1900 family. It comes with one fix thatRestores the ability to Power On the handheld after it becomes locked in Standby mode with an SD Card inserted in the handheld. When the handheld is in this locked state, it does not Power On with the Power button and the battery may become discharged.
A hard reset will not be required after you install this update.