Sony has just released an update to the firmware for the RX100 V camera, to Version 1.01. This is not a major upgrade in terms of adding any new features, but Sony says that it improves the overall “stability of the camera” and makes improvements to correct a situation whereby the camera sometimes would not power on “after making certain setting changes.” I had not experienced any problems with my camera, but I went ahead and installed the firmware upgrade, because it sounds like a good idea to do so. The upgrade did not cause me any problems. Here is a link to a page where Sony provides the downloadable file for the upgrade as well as instructions: https://esupport.sony.com/US/p/model-home.pl?mdl=DSCRX100M5&template_id=1®ion_id=1&tab=download#/downloadTab. (You have to select your computer’s operating system, and the Sony website will then provide you with the appropriate download links.)
My RX100 V battery loses some charge over a period of days – even when not switched on. Also: charge indicator shows 1 bar more charge if switched on for viewing photos in memory than when switched on for shooting. I owned a RX100 II for three years with no such problem. Distressing. Any similar experiences out there?
I haven’t had any problems with mine, but I don’t use it everyday. Maybe someone else will comment here, or you could ask in the Sony Cyber-shot Talk forum at dpreview.com, if you haven’t already tried there.