CanonRumors is reporting (as of early yesterday) the firmware update will be re-released later this week. Of course, that's not official. Both R1 and R5 mk II affected.
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Canon EOS R
Canon EOS R5 Mark II: Firwmare v1.1.1 Released
Craig
Last updated: July 24, 2025 1:03 am
Craig
Published: July 24, 2025
9 Comments
5 Min Read
Canon has released new major firmware for the EOS R5 Mark II for the second time in a week. This update fixes an issue where video could not be recorded correctly when using a memory card larger than 2TB with the [Pre-recording] setting enabled.
Canon EOS R5 Mark II Firmware v1.1.1
Improves security features. A password must be set initially.
Adds the ability to review the history of any changes made to the password, network information, or other settings.
Enables firmware updates to be performed when the camera is connected to the internet and new firmware is made available on Canon servers.
Adds the ability to automatically detect Flicker at 100 or 120 Hz during Live View display.
Adds the ability to register focus position as a presets on the CR-A100 Camera Remote Application.
This ability makes it easier to focus on subjects at the intended distance when the application is used with Robotic Camera System CR-S700R.
Adds the ability to select [Case Special] to expand Servo AF characteristics which is effective for subjects located behind a net in sporting events, such as badminton or volleyball.
Adds support for the Software Development Assistance Kit (EDSDK/CCAPI).
Adds a function that simultaneously protects images when they are rated.
Improves image stabilization control for lenses compatible with Peripheral Coordinated Control.
Adds the ability to use up to 8TB of CFexpress cards.
Cards larger than 8TB require low-level formatting by the camera.
Cards larger than 8TB are treated as 8TB cards.
Cards larger than 2TB cannot be used for firmware updating.
Adds to lower the image capture frame rate to help prevent overheating when connected to CR-A100 in extended remote shooting.
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.
If a voice memo is added to an image queued for transfer, the image and voice memo are now sent last.
Adds the ability to set the number of shots captured in pre-continuous shooting mode.
Adds the ability to set [Airplane mode] to shooting button customization.
Adds the ability to enable [Exposure Simulation] when a flash unit is attached.
Improved AF tracking during video capture for subjects that are difficult to focus on.
Fixes an issue in which Err70 may occur when enlarging an image after shooting with [Blackout-Free Display] set to “On” and [Servo 1st image priority/One-Shot AF release priority] set to “Release priority”.
Fixes an issue in which Err70 may occur during Bluetooth communication due to interference from other Bluetooth devices.
Fixes an issue in which Err70 may occur when repeatedly shooting in the “High-speed continuous shooting +” mode.
Fixes an issue in which Err70 may occur immediately after startup when shooting with the electronic shutter.
Fixes an issue in which Err70 may occur during video recording in “FHD239.8P/200.0P”.
Fixes an issue in which Error 70 may occur while filming in video mode with frame rate set to “50.00P” and [Movie Digital IS] set to “On” or “Enhanced”.
Fixes an issue in which Err70 may occur during shooting when both [Pre-recording] and [Auto send] to image.canon are set to “Enable”.
Fixes an issue in which the camera may stop functioning properly when [Image Review] is set to “Off” and the monitor entered low brightness mode after pre-continuous shooting.
Fixes an issue in which video recording may not be possible when using Remote Live View shooting in EOS Utility while outputting via HDMI.
Fixes an issue in which large RAW image files may not be transferred via Camera Connect.
Fixes an issue in which a horizontal line may appear momentarily in the viewfinder.
Fixes an issue in which the camera may not connect to Wi-Fi 7-compatible routers.
I downloaded it from the Hong Kong site. I'll get to it later. I'm not the least bit concerned about its reliability. 1.1.0 worked just fine for me as well.
