This update broke the proper functioning of the Bluetooth deactivation, being when either (a) the WiiM Ultra is switched off / on standby, or (b) another input other than Bluetooth is selected. The expected behaviour is detailed
here: "To disconnect the current Bluetooth connection [either] Select a different input other than Bluetooth and Wi-Fi". I had a very unpleasant experience today, when, after having turned off the WiiM Ultra with the red button on the remote (which, via the trigger, also turned off my external amp and subwoofer) I went to use my Bluetooth earbuds: unexpectedly, my phone was still connected to the Bluetooth on the 'off' WiiM Ultra, and my music, intended for my earbuds, came blasting out of my speakers.