RFU Updating the Firmware
D146/D147/D148/D149/D150 10-2 System Maintenance Section
2. Download the same firmware as the firmware supplied to the SD card by RFU, and perform
upgrade with the SD card
(It may take about 5 minutes until upgrade by the SD card starts).
1. Replace the firmware storage destination board.
[Example]
In the case of System/Document: Controller board
In the case of Engine: Engine board