Got a mystery for you guys.
I decided to update to 4.20.75, so downloaded it and placed the "epk" file in an "LG_DTV" directory on a USB stick.
I click the "Install" message, go over to "about" to watch it update...and it stops in the middle with the message "cannot update".
It's about a 713 Meg file, right?
Yamaha RX-A2050 AVR [v1.81], LG 65EF9500 4K OLED [v4.25.70]
5.0.2 set-up: (4) Polk Monitor 10B's, (2) Polk Monitor 4's, Polk CS300 center
B&O TX2 Turntable, Nakamichi Cassette Deck 1
Pioneer CLD-99 LD, Panasonic DMP-UB900 UHD [v1.80]