wrote: thanks i "of course" also opened a similiar thread on apple side from my understanding the way canon shows the dual slot to apple is not compatible not I got 12.3 MB for the .dmg file, but that file size you get isn't the best way for determining file integrity. After calling someone at Canon for support, they confirmed that the file size was what it was supposed to be, so now I've been able to do the firmware update. If anyone wants this for futu Home » Canon Firmware » *UPDATE* 5D Mark II Firmware 2.1.1 *UPDATE* 5D Mark II Firmware 2.1.1 By Canon Rumors November 13, 2011 Updated: November 15, 2011 No Comments 1 Min Read Canon Firmware Canon has posted a firmware update for the 5D Mark II. The only thing that the new firmware does is to optimize performance with UDMA Mode 7 CF cards that were released in February 2012 or later. The only thing that the new firmware does is to optimize performance with UDMA Mode 7 CF cards that were released in February 2012 or later. The Version 2.1.2 firmware being released this time is for cameras with firmware up to Version 2.1.1. If the camera's firmware is already Version 2.1.2, it is not necessary to update the firmware. Q&A Section: Preparations for the Firmware Update: Macintosh After the downloaded compressed file (.dmg file) is extracted, a firmware folder is created. You're right. After trying out new camera on both pc and mac, we tried a friends 5d mkiii with the extension cable and it's working. So, after spending several hours on this, I believe it's the camera itself. Canon EOS 5D Mark IV Canon EF 50mm f/1.2L USM Canon EF 50mm F1.4 USM Canon EF 85mm F1.2L II USM Canon EF 100mm f/2.8 Macro USM +3 more Reply Reply with quote Reply to thread Complain 01-27-2021 06:49 AM. Hi! I'm testing EOS Webcam Utility both on PC and Mac with my beloved 5D Mark II. I find curious that it's working properly on Windows 10 but not on Mac OS Big Sur (I'm using the Catalina version, which seems to be working for other users here in the forum). Little update. I did the upgrade and tried it this past weekend at a reception. The dance floor is where I struggled the most. There def. was an improvement with the AF assist beam with the upgrade, but still struggled at times. Tested another photographers 580ex flash, and with that I was able t 7hrBib6.

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