Hello,
had no luck yet.
After executing all the steps above and pressing 'Y" to save , i see that Putty is asking something about filename, what should i press then?
Edit:
I just press Enter and it seems ok.
Then i checked with FTP and i see that the drop-dst-x3.conf file is created in correct directory.
I reboot but nothing is affected, all add-ons fail to update.
Edit 2:
Problem solved, i had to update Libreelec as well to latest, after that the fix above worked!