Ricoh M281 Series Service Manual page 412

NVRAM Data Upload/Download

The serial number of the file on the SD card must match the serial number of the
machine for the NVRAM data to download successfully. The download fails if the
serial numbers do not match.
This procedure does not download the following data to the NVRAM:

Total Count

C/O, P/O Count (MP 501/601 only)
D255/D256/M281/M282 5-42 SM