This is how you downgrade the firmware on a Canon camera
Canon R10 Firmware Update Version 1.3.0 - RFshooters.com
EOS R firmware update 1.4.0
Update Your Canon Firmware! Canon R5 & R6 Users May Need This (1.5.0 Firmware). - YouTube
Camera Firmware: How to Update It (and Why)
How to Apply a Canon DSLR Firmware Update to Your Camera - YouTube
New Firmware Update Brings Enhanced Efficiency to the Canon C70 | B&H eXplora
Firmware: updates to your Canon EOS camera
Firmware Update/Downdate?
Canon EOS R6 Firmware Update Adds Log 3 & Simultaneous Video Recording | CineD
How to Update Canon Rebel T7 Firmware
Canon Singapore - New firmware updates are available for... | Facebook
Firmware update information & download links for Canon EOS cameras
How Do I Fix the Firmware Update Program Error on EOS 70D
How To Update Firmware On The Canon 6D Mark II
Canon EOS R5 Firmware Update 1.1.0 Released - Definite Overheating Management Improvement | CineD
Camera Firmware: How to Update It (and Why)
Firmware Update - Canon Ireland
How to update Canon firmware - Camera Jabber
EOS Cameras Support - Download drivers, software, manuals - Canon Europe
Canon 70D "Firmware update program" Solution. — GottaLightMyFire
How to Update Canon R5 R6, Firmware Update | Step by Step - YouTube
Firmware: updates to your Canon EOS camera
