do you think it would help if i buy a new control board?
But can you change the control card?
If there is such a possibility, it might be an idea to test. It's strange that he changes the MAC address, it could even be a problem with the control board.
Thank you.
Now I bought two used control board, which were used in a T15.
when i installed the new control board, all the data from the previous owner was saved, even when i did a reboot.
When I then flashed the control board to the DR5 version, it started saving nothing again.
I have now also noticed that the area of cached is always at 0%, that is, nothing goes into the cache and therefore everything is always deleted.
https://i.ibb.co/PYVPCC4/no-cash.jpg