My info. screen tells me that my remote is running the 6.1 software, which I assume was upgraded when my amps had the CI boards fitted (Devialet asked that the remote was sent back with the amps). A few weeks ago, my remote became unresponsive and a quick test with a multimeter showed that the batteries were depleted. I think it is quite significant that when the batteries were running down, I had no involuntary increases or decreases in volume. Before the upgrade, I had experienced unexpected volume increase on three occasions. Luckily, on all three occasions I was within arms reach of the remote! Fresh batteries seemed to fix the problem.
@BGrantham and@Devialetuser, what software are your remotes running, please? Did you send your remotes back whe you had the CI upgrade?
Anybody who is thinking about having the CI upgrade: it would be a good idea to send your remotes back with your amps! 
@BGrantham and@Devialetuser, what software are your remotes running, please? Did you send your remotes back whe you had the CI upgrade?
Anybody who is thinking about having the CI upgrade: it would be a good idea to send your remotes back with your amps!
Project Eperience X Pack with Ortofon Rondo Red MC, Oppo BDP 105D, 2 x Sonos Connect, QNAP HS251+ NAS with 2 X 6TB Western Digital Red, Mac 5K 32GB running Lifetime Roon, iPad Pro 12.9" for remote control. Etalon Ethernet Isolator, Devialet 440 Pro CI, Sonus faber Olympica ll with Isoacoustics Gaia ll feet, Auralic Taurus Mkll headphone amp., Denon AH-D5000, Sennheiser HD600 and HD800 with Cardas cable, Van Den Hul The First Ultimate and Crystal interconnects, Furutech power cables, GSP Audio Spatia speaker cable.
South Coast England
