[Philips, Sony, TCL Android TV] Limi2:
Hello,

My Grandma got a Philips 42PFK6309/12 Smart TV, which is not an Android TV, so pardon me for going a bit of the rails here, I couldn't find a better place to ask my question. Anyways, beginning from the second or third of September, she has noticed that she's unable to turn of the TV. She thought the remote was to blame; turns out the remote is not to blame (I wish the remote was to blame, would make my life much easier).

I have taken a look at the TV in an attempt to fix it, and noticed some odd things:

It won't turn off, neither using the remote nor by using the TVs Joystick button thingy.

As it ain't willing to turn of on its own, there is nothing left other than doing it dirty way and unplugging it from the power outlet. Turns out, when plugging it back in, the TV starts automatically, which ain't normal either.

When changing channels, there used to be a bar at the top that showed what TV show is currently running and its start / stop time. That bar ain't coming up anymore.

Pressing a number on the remote to change the channel works, until I try turning off the TV. Once I try turning of the TV (which won't work) or do other random stuff that seems to overload the TV, trying to change channels using the numpad won't work. Sometimes it starts working again after some time, sometimes it won't. If the numpad won't work anymore, the channel + and - buttons still work, but also seem to temporarly say good by if I use them too frequently.

Multiple buttons including the 'Smart TV', 'Menu' (Home), 'TV Guide', and 'Sources' buttons cause no response on the TV. The Remote is (presumably) not to blame, considering the instructions are reaching the TV (pressing a button on the remote always results in a red light blinking up on the front side of the TV even if nothing happens on the TV).

The buttons 'Teletext', 'Options' (not to confuse with the 'Settings' button), and 'Settings' (not to confuse with the 'Options' button) cause response on the TV.

The 'Settings' button, represented as a ⚙️ symbol on the remote, causes the TV to open a menu (nice). Having the menu open, I can open multiple submenus such as the Visuals Menu and Sound Menu. There is also a submenu simply labeled 'Settings', which in itself has a bunch of subsubmenus that has settings regarding System Updates, WIFI connectivity, and more. There are 10 subsubmenus in the 'Settings' submenu, out of which clicking on 2 does something (there is no response when clicking on the other 8).

The TV was first used in late November 2015 (the model was released in Mid-2014 if I am not mistaken), has never been connected to WIFI and was never updated. I am pretty sure the source of the problem is a Software bug. Perhaps a backend software token that was bound to expire at the beginning of September of this month.

I have tried updating the TV. I can initialise OAD Updates, but I can't connect to WIFI (the menu won't open) so I can't update this way. I have tried downloading the latest update for this TV Model from Philips.de, unzipped it, and placed the autorun.upg into the root Folder of the Fat32 formated USB (there is nothing else on the USB). When I plug in the USB while the TV is on, a message pops up reading a long the lines of 'USB is being read', but nothing happens after that. Unplugging the TV, then plugging in the USB (into either of the two USB ports), and then plugging the TV back in ain't doing anything either.

I don't know what else to do. Bringing the TV to a Philips repair shop is not an option.