I got an Orange Treo 600 recently ( ), but I see in ...\Handspring\Update various folders in the form vX.XX (where Xs are numbers) and inside each one is an UpdXXX.prc file which seems to only loosely correspond at all to the folder it's in. I recently put on my T600 the latest looking one (Upd353.prc, after reflashing with firmware from that other thread). What do these files do and was installing Upd353.prc a good idea?

TIA,
Ian