This will also be the case if the card has been reset to factory defaults.
The configuration can be changed through a web browser and reverted to factory default.
The same way firmware can be upgraded or configuration reverted to the factory default.
The printer is now reset to factory defaults, and the network configuration should now work.
I tried two basic ones the usual factory default, four zeros, and then 1234.
So I did the even longer reset that restores to factory defaults.
This often resets the entire device to factory defaults and includes all configuration and data.
Reportedly some disks can report if the Master password has been changed, or if it still is the factory default.
This should be set to 2 sec (factory default is 10 sec)
This should be 17.81, this is also factory default.