What does this firmware do?
General improvement of the software stability.
1) unpack the files and copy files safe-kernel and update-demo to root of an empty USB drive
2) disconnect mains from TV
3) attach USB drive to TV
4) connect mains to TV
5) blue LED starts flashing slowly
6) after ~60 seconds the blue LED flases quickly, that means: upgrade ready
7) disconnect mains and remove USB drive
8) reconnect mains and start the TV
Attention: do NOT REMOVE USB device when system is updating. This causes errors or defects to the TV
Updating firmware is at own risc.