New to this forum but i have been having the same issues since i got my 65UB950V
I started having the Magic remote upgrade issues after the TV upgraded to 04.40.34 firmware that was automatically downloaded from LG servers this version was never available on the web site only 04.30.18
I have just downgraded the firmware to 04.30.18 and it fixed the issue the upgrading magic remote, it popped up for 3 seconds and i have not seen it again.
I have noticed a new version 04.36.32 on LG website published on the 31/12/14 just installed this version and everything seems ok still
Just going to try 04.40.34 again to see what happens