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Canon 200-400 Firmware - Any issues during/after update?

Started May 9, 2018 | Questions thread
Arnoud Quanjer Forum Member • Posts: 73
Re: Canon 200-400 Firmware - Any issues during/after update?

Any issues?

Hi Nuno,

Using a 1Dx Mark II with both CF and CFast installed I wasn't able to update without issues. I copied the new lens firmware to a CFast card. When starting the update process the camera couldn't locate the new firmware. When I chose to update the firmware the LCD went black and the camera locked up. After removing the battery the camera worked fine again. I then removed the CF card. Same thing, the camera still locked up. I then removed the CFast card and put the firmware on the CF card. After I did that the lens firmware updated without any issues. Test shots in single shot and AI servo look fine.

I then updated the camera to the latest firmware version with both cards installed. It loaded the firmware from the CFast card without any issues (with both CF and CFast cards installed).

I don't know why the lens firmware would not load from the CFast card, but the firmware itself looks to be functioning fine.

Regards,

Arnoud Quanjer

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