New answers tagged magic-lantern
About the only thing you have not tried that might help is to update/reinstall the firmware for your 5D Mark II. The last version listed at Canon USA's support page for the 5D Mark II is version 2.1.2 There are instructions that become visible when you click the "select" box for the listing of version 2.1.2. They tell you how to download the zip file, ...
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