Thanks a lot for your comment.
I have been reading the log files, but couldn’t find some clues on hacking so far.
Any how, because I setup my router to do port-forwarding to be accessible from outside, I think you are correct.
It was totally my fault.
So, I should figure out how the hacker ruined my TX1, but it will takes time and might have hidden problems.
For repairing the TX1, what would you recommend in this case?
I would like to go back to the factory status, if it is possible.
One more advice, please.
Thank you so much.
I really appreciate your quick and insightful response.