Few questions for UE40J5100AWXBT

[mexus]

Hi I'm new here. I've read a lot of the Wiki but I have few questions.

1. UE40J5100AWXBT is a J series TV? (I've seen that J series uses format different scm for channel but mine uses that).
2. It's a non smart TV, is there anyway to install software on it, connect it to the internet using WiFI dongle (no LAN port).
3. Is it rootable? Software version is 1040 (strange latest version on samsung website is 1037.3). What can I gain?
4. Something interesting I can enable in the service menu? For example enable extras.
5. Is there a RS232 port easily assessable
6. There is an feature called something like check for updates over broadcast information, how does that work? (No internet)

I'm OK with linux, RS/TTL procedures (been playing with phones and routers a lot).