The "Download Standby" mode is often triggered by a corrupt communication handshake with an accessory.
Experts recommend flashing the Boot software first, then the System software. Canon Ir 2016 Download Standby Error
Canon IR 2016 “Download Standby Error” – What It Means & How to Fix It The "Download Standby" mode is often triggered by
If SST cannot see the printer, ensure your PC recognizes the device as "CYFSA" in the Device Manager. Canon Ir 2016 Download Standby Error
You will need a laptop, a USB or network connection to the printer, and the Canon Service Support Tool .
Do not interrupt the power during this process, as it can permanently damage the main logic board. 4. When to Call a Technician