Block updates even in failsafe mode

[nnmdd]

Hello.
As for now, the situation with updates is getting worse and worse, while there is no universal way to block these updates except on the TV itself, taking into account the fact that hbc is still loaded in failsafe mode and given the relative safety of update blocking commands, I propose to introduce (as an option for example) the ability to load update block script even in failsafe mode.

[Informatic]

FYI you can achieve that by blocking these domains on your local DNS server: https://github.com/webosbrew/webos-homebrew-channel/blob/main/services/startup.sh#L53-L55

Regardless, that's probably something worth implementing at this point.

[nnmdd]

I of course blocked updates in my own network. but looks like very easy to click OK when update notification shown on tv in failsafe mode

[FetchFast]

Just a heads up: I noticed my TV using its own dns setting to bypass blocking; 8.8.8.8