: If the firmware fails to "take" (the machine remains in "Download Standby" after a successful flash), the main logic board may be physically damaged and require replacement. JustAnswer Basic Troubleshooting Steps
If the printer is stuck permanently in Download Standby: canon ir 2016 download standby error verified
Boot with a special key sequence to reset NVRAM to factory defaults. With power off, press 2 and 8 and power on. Hold until “DOWNLOAD STANDBY” changes to “CLEAR NVRAM”. Follow prompts. : If the firmware fails to "take" (the
: Once the screen displays ROM Write OK , power cycle the machine. Troubleshooting Tips power cycle the machine. Troubleshooting Tips