Showing results for 
Show  only  | Search instead for 
Did you mean: 

PIXMA TR8520 not responding after firmware update



I have a Canon 8520 and was asked to update the firmware. After hitting start, the screen turned off, the power light is still on, but it has been over two hours and nothing happens. 

Is it normal??  What should I do?

Thank you,





Can you please verify your printer model? There will usually be a couple letters ahead of the numbers.

It is TR8520


Hi Roy,

It is not normal for the screen to turn off and for nothing to happen for over two hours after updating the firmware on your Canon 8520 printer. This suggests that something might have gone wrong during the update process.

You could try resetting the printer by unplugging it from the power source and waiting for a few minutes before plugging it back in. If this does not work, you could try contacting Canon customer support for further assistance, as they would be in a better position to provide specific troubleshooting steps for your printer.

I hope this helps!


Thank you Soy Seak.  I was nervous disconnecting the power in the middle and ending up with a black brick with no firmware. I did end up taking the cord out, and plugging it back in. At that point it notified me that the update failed. I will try again in a day or so, once I get the courage to try again.

Thank you again,


08/18/2023: Canon EOS R5 C training series is released.

07/31/2023: New firmware updates are available.

CR-N700 - Version 1.2.0

CR-N500 - Version 1.3.0

CR-N300 - Version 1.3.0

CR-X300 - Version 1.1.0

06/30/2023: New firmware version is available for EOS-R5 C

05/31/2023: New firmware updates are available.

EOS R6 Mark II - Version 1.1.2

EOS R6 - Version 1.8.2

EOS R7 - Version 1.3.1

05/18/2023: New firmware updates are available.

EOS Rebel T100 - Version 1.1.0

EOS Rebel T7 - Version 1.2.0

EOS 5D Mark IV - Version 1.4.0

EOS 6D Mark II - Version 1.2.0

PowerShot Elph 360HS - Version

PowerShot SX420 IS - Version

PowerShot 620 HS - Version

PowerShot SX720 HS - Version

PowerShot G1X Mark III - Version

PowerShot G7X Mark II - Version

PowerShot G9X Mark II - Version


04/20/2023: New firmware version 1.4.1 is available for EOS R3

03/30/2023: New firmware updates are available.

EOS R5 - Version 1.8.1

EOS 1DX Mark III- Version 1.7.1

Speedlite EL-1 - Version 1.0.2

03/30/2023: Product Advisory for EF50 F1.2 L USM

03/30/2023: Product Advisory for EOS R10

02/24/2023: We've updated Share Your Photos

2/07/2023: New product announcements!

EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
01/09/2023: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
01/03/2023: Welcome to CES 2023!
12/08/2022: New firmware version is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5