Ricoh M281 Series Service Manual page 394

Package Firmware Update (MP 501/601 Only)
5. Check the information displayed.
When the package firmware is downloaded successfully, the details of the download result
are displayed as the following picture shows.

This information will only be displayed if the reserved firmware has already been
downloaded. If not, all the data items are indicated with "-".
How to Install Firmware Downloaded with RESERVE
1. Enter the SP mode.
2. Touch [Firmware Update].
3. Touch [Update].
D255/D256/M281/M282 5-24 SM