Connect a PC to the iR2016 using a USB type-B cable or a parallel port (depending on your specific sub-model/card).
If you’ve already tried the upload and it failed, inspect the main controller for swollen capacitors or replace the boot ROM. But start with the software fix – it’s free, and it works. canon ir2016 download standby error verified
If the machine fails to accept the download or cannot be seen by the PC: Connect a PC to the iR2016 using a
Firmware files and the Service Support Tool are proprietary Canon utilities. If you do not have access to these, you may need to contact a certified technician to re-flash the board. If the machine fails to accept the download
After replacing the board, you still reinstall the firmware — the new board will also be in Download Standby until proper system code is uploaded.