Firmware Notice: EOS R3: Firmware Version 1.9.0    

Firmware Version 1.9.0 incorporates the following fixes and enhancements:

  1. Improves security features. A password must be set initially.
    a. Adds the ability to review the history of any changes made to the password, network information, or other settings.
    b. *For more information, please refer to the 'Setting a Password' section in the Advanced User Guide on cam.start.canon.
  2. Enables firmware updates to be performed when the camera is connected to the internet and new firmware is made available on Canon servers.
  3. Adds a function that simultaneously protects images when they are rated.
  4. Adds the ability to use up to 8TB of CFexpress cards.
    a. Note:
        i. Cards larger than 8TB require low-level formatting by the camera.
        ii. Cards larger than 8TB are treated as 8TB cards.
        iii. Cards larger than 2TB cannot be used for firmware updating.
  5. Adds to lower the image capture frame rate to help prevent overheating when connected to CR-A100 in extended remote shooting.
  6. When transferring images with voice memos via FTP, the transfer order priority has now changed with voice memo (Wav) file being sent first followed by image file.
    a. If a voice memo is added to an image queued for transfer, the image and voice memo are now sent last.
  7. Improves AF tracking performance during zooming in still photo shooting with compatible lenses.
    a. *Compatible lenses (as of July 16, 2025):
        i. RF24-105mm F2.8 L IS USM Z (ver.1.1.0 or later)
        ii. RF70-200mm F2.8 L IS USM Z
        iii. RF100-300mm F2.8 L IS USM (ver.1.0.8 or later)
  8. Adds the ability to enable [Exposure Simulation] when a flash unit is attached.
  9. Fixes an issue in which Err70 may occur during Bluetooth communication due to interference from other Bluetooth devices.
  10. Fixes an issue in which Err70 may occur when repeatedly shooting in the "High-speed continuous shooting +" mode.
  11. Fixes an issue in which image stabilization may stop working when using an EF lens.
  12. Fixes an issue in which HDMI output may momentarily stop when [Screen Off] is activated in the Power Saving settings.

If the camera's firmware is already Version1.9.0, it is not necessary to update the firmware.


Support

Download Firmware Version 1.9.0 for the EOS R3.

To help obtain optimal performance of this camera, we recommend that you download and install the most recent versions of Canon software and the EOS R3 Advanced User Guide (PDF).

If you have not already done so, please register the EOS R3. By registering, we will be able to notify you via email about future announcements.

This information is for residents of the United States and its five territories only. If you do not reside in the USA or its five territories, please contact the Canon Customer Support Center in your region.

Thank you,
Customer Support Operations
Canon U.S.A., Inc.

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