JRC JMR-92 Series Field Service Manual page 766

When the Firmware type and the update file do not match, an error occurs.
(6) After the file is selected, the "Update" button is enabled in the Step4 Update item. Start
Update by pressing the button.
(7) When Update is finished normally, the Update completion window is displayed. When the OK
button is pressed, the remote update tool is terminated and processing returns to the Task
screen. When the restart confirmation screen is displayed, restart.
3. Confirming the updating version
After updating, confirm the firmware version in maintenance menu.
(1) Click on the [Menu] button on the left toolbar.
The menu is displayed.
5-23 Section 5 Software Update