SamyGO

Sorry, this TV is not rooted, no telnet or other benefits. You`re first user who posted about this model here

Yes. Probably you're right.

Here is no already hacked firmware. If you really want to try, you can use existing info on forum and wiki, but here is no guidelines for your firmware.
Also you can`t downgrade or install another firmware. TV won`t accept it.

Yes, i got, but i think you havent understood me: for hack you need not only hotel mode usb import, but also normal channel import/export as one solid file. You have only Hotel mode function, but channel export is missing. It is known, same as T-VALAUSC...