Thank you! So great to have the AC controls popup!Here is the new MCU version that is supposed to provide the overlay .. version 1.9
Put the .BIN file on the root folder of usb stick and plug it into the usb cable .. you should get a window that pops up asking if you if you want to find the MCU file and upgrade .. select YES and let it upgrade .. the system will reboot after about a minute and it will pop up the upgrade window again, this time choose cancel ... check the system version screen and verify that MCU is now updated to V1.9 ...
After updateing, go into factory settings and enter the advanced settings .. password is 8818 .. scroll down to the air conditioner display option (at the very bottom) and turn it on .. then select "sync" .. reboot the system..
This Should give you the overlay.. however it did NOT work for me on my 2012 XC60 ... manufacturer confirmed that it did work on another clients vehicle but talking to the engineers about perhaps a fix for mine .. so in other words, try this at your own risk! .. Everything else seems to still work properly at the V1.9 so at least I didn't brick my unit