Having a bit of a rough time trying to update my 50P6US ITS STILL ON ANDROID 7 with a security patch level of DECEMBER 5 2017 no OTA updates no replies from TCL Support (I've tried every different way). I did find another post and got a file from https://support.tclelectronics.com.au/software-version/ but the instructions don't do anything when booting the TV it just boots as normal. I think it might just be TCL NZ because I've seen my model of tv with android 8 at least even when the product page was around it showed android 8! Anyone else had this sort of experience or is it just me.
Update on this: I decided to go on a bit of a rant on twitter then tagged tcl support and emailed them. Magically the next day the first OTA update since 2017 pops up!