To resolve this error, you generally need to perform a firmware "re-flash" using specialized service tools. :

during a previous update or while the machine was writing data. Hardware degradation of the main controller PCB or flash memory chips. Communication errors that interrupted the boot sequence. JustAnswer Verified Resolution Method

Install the Service Support Tool on your computer.

Have you recently experienced a or performed a network change ?

The following standard troubleshooting steps were performed to isolate the issue:

Unplug the power cord completely from the wall outlet.

Service Support Tool (SST) Overview on JustAnswer (General guidance on firmware loops).

For some Canon models, including the iR2016 series, a dedicated downloader PCB is required to install the boot program. If you have access to this specific service part (FY9-2034), it can be used as an alternative method to rewrite the boot firmware. If the steps above do not work, this specialized hardware may be the only solution.

Add a “Force Download Mode” button in SST that:

Press and hold the copier's physical power button for 15 seconds while it is unplugged.

Once the progress bar reaches 100% and indicates a successful transfer, turn off the machine, disconnect the USB cable, and turn it back on. 4. Inspect and Reseat the Main Controller PCB

A "Rom write error" during the flash process or a persistent standby state can sometimes be caused by poor contact with the printer's RAM. Power off the machine and reseat the RAM module. Power Cycle: