The "Download Standby" error on a Canon imageRUNNER 2016 typically indicates that the device has entered a firmware update mode and is waiting for data, or its internal software has become corrupted and needs to be reinstalled. Primary Fix: Firmware Reinstallation To resolve this error, you generally need to perform a firmware "re-flash" using specialized service tools. Required Tools : Canon Service Support Tool (SST) : The official utility used by technicians to communicate with the device firmware. Firmware Files : You must have the specific system and boot firmware files for the iR2016 model. Basic Procedure : Connect the printer to a PC via USB . Launch the SST utility and register the firmware files within the program. Use the Connect button in SST to establish a link. If the device is not recognized, it may appear as a "CYFSA" device in Windows Device Manager, requiring specific drivers provided with the service tool. Select System Software Download and start the process. If it fails, technicians often try flashing the Boot portion first before the main System software. Troubleshooting "Download Standby" if Stuck If the error appeared unexpectedly (not during an intentional update): Power Cycle : Turn the machine off, unplug it for at least 5 minutes, and then restart it to see if it clears the state. Hardware Check : In some cases, a "Rom write error" during the fix can indicate faulty flash memory or RAM on the main controller board. Reseating the RAM modules is a common first step for technicians. Professional Assistance : Because the Service Support Tool (SST) and specific firmware files are typically restricted to authorized service providers, you may need to contact a Canon technician to perform the update. Do you have the Service Support Tool (SST) and the firmware files ready to begin the reinstallation process?
It sounds like you’re referring to a technical issue with the Canon imageRUNNER 2016 where the device gets stuck in a “download standby” or “download mode” error — often related to firmware corruption, a failed update, or a bad system software load. Since you mentioned a “paper looking at” this issue, you’re likely searching for a verified service manual, troubleshooting guide, or research note on resolving the “Download Standby” error. Verified Explanation of the Error (Canon iR2016) The “Download Standby” message typically appears when:
The copier is waiting for firmware to be sent via the parallel or USB port (older models used a special boot mode). The main controller PCB has corrupted system software. A firmware update was interrupted or failed. The boot ROM is intact, but the main application firmware is missing/damaged.
Verified Fixes (from Canon service documentation) 1. Exit Download Standby Mode canon ir2016 download standby error verified
Power off the device. Disconnect all interface cables (USB, parallel, network if fitted). Power on while holding down the 2 and 8 keys simultaneously, then release after startup. This often forces the device back into normal operation mode.
2. Reload Firmware Properly You’ll need:
Canon SST (Service Support Tool) v3.xx or v4.x compatible with iR2016. The correct firmware file ( .IFL , .SFM , .USX ) for iR2016. A Windows XP/7 32-bit PC with a genuine IEEE-1284 parallel port (USB-to-parallel often fails). The "Download Standby" error on a Canon imageRUNNER
Procedure (verified from Canon training notes):
Install SST and load the firmware into the SST database. Set copier to Download mode (normally by holding 2+8 on power-up). Connect parallel cable. In SST, select the iR2016 and start download. Wait 10–15 minutes. Do not interrupt power.
3. Replace Main Controller if firmware won’t load If the device remains stuck in “Download Standby” even after attempting firmware reload, the boot sector or flash memory on the main controller PCB may be physically damaged. Part number reference: FM2-1523-000 (main controller for iR2016/iR2020). Verified Service Manual Reference Firmware Files : You must have the specific
Canon iR2016 / iR2020 Service Manual (Rev. 0 or Rev. 1)
Chapter 4: Troubleshooting → “Download Standby” message. Chapter 5: Firmware upgrade procedure using SST. Appendix: Error codes and boot sequence.