I have a similar problem trying to reset the general system tamper. I have RFK5500 V1.3 and PK5500 V1.3N keypads bussed to an 1832 with regular alarm wire (bus was working for an FBII system just removed so I think the cabling is good. The "General System Tamper" error is on both keypads.
DLS 5 gives the error via a TL260/Ethernet link as "Wireless Module Keybus Problem".
At the keypad I tried going to  and resetting option 3 "keyboard tamper" but it comes up with
"0460 ... Enter Data"
The manual says that 0460 means "Version 4.6", but if that was true and obviously a fixed version number...why would DSC want you to put in "Data"
The manual is no help on this one.
Both pads seem to operate correctly as far as arming/disarming/etc, except
I cannot get one to broadcast the ASCII labels to the other like the instructions state. That's not a biggie, but maybe a clue.