Chapter 1717-22F-17-404) If you want to execute a different downloading session, see the appropriate instructions.5) When you are done, turn off and then on the main power (iR4570/3570, 2870/2270 Series).6) See the status of upgrading indicated on the control panel of the machine (iR4570/3570, 2870/2270 Series). When a message appears asking you to turn off andthen on the switch, turn off and then on the main power (iR4570/3570, 2870/2270 Series).Be sure never to turn off the machine while it is executing a download session or writing downloaded system software. Otherwise, the ongoing write operation willbe suspended and the machine may not start up.If the machine fails to start up, format BOOTDEV using HDFormat, and download such software as System, Language, and RUI.If the machine fails to start up, be sure to replace the boot ROM.17.4.7 Downloading Dcon and Rcon17.4.7.1 Outline 0008-7605iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /Dcon/Rcon is downloaded by way of the main controller unit.- The DC controller PCB/reader controller PCB is equipped with a boot ROM, and downloading may be attempted multiple times in the event of failure.- The system software used in the DC controller differs between the iR3570/3570 and the iR2870/2270. The system software designed for the iR4570/3570 is storedas iR3570, while the system software designed for the iR2870/2270 is stored as iR2270. The machine has a mechanism to read the appropriate system software.It is a good idea to download both types of system software.