Hi,
Maybe the internal battery is dead, causing it to no longer detect the FSEA30 options properly. Your wrong time and date does indicate the battery is dead.
First have you checked in the spectrum, its reading the model and serial number correctly? Cause when the battery dies it tends to go haywire, usually the model number default to FSEM or FSEB.
In my case my FSEM30 was detected as FSEA30, It basically went from 26.5 GHz version of a tiger to a 3 GHz house cat.
Lets check first if its detecting the model properly, also do check the back of instrument to see if they are stickers with the option codes.
See sample below, picture taken from ebay
Good Luck