***BE CAREFUL*** With this method will delete all settings and portals from your device.
Many customers given custom firmwares with locked portal and many of these with changed default password.
Then the only way to unlock our device is to install firmware again.
Here we see how to do it in models MAG 250 & MAG 254.
So, if you tried to connect via ssh (see here how to Connect MAG devices via SSH (all models))
and you didn't have success, do the following.
(0 time(s) working and 0 time(s) not-working in total)