Configuration Restore - Error 511
I have an XTM 535 device that is 12.1.3.B571132 firmware. This device goes end of life in November and therefore out of support.
We have purchased a new appliance (M570) which has now arrived. I want to perform a configuration back up and restore from the old device to the new. However, when I attempt to do this I receive a 511 error.
From what I can tell from some online searches, it is because of the mismatch between firmware versions. Unfortunately this creates another problem as I can't update the firmware on the XTM535 past 12.1.3 due to the age of the device.
Does anyone have any advice on how to proceed? I'm trying to avoid a full configuration re-write of possible.