D800 firmware downgrade - where do I get it?

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Giovanni_1968
Giovanni_1968 Veteran Member • Posts: 3,598
D800 firmware downgrade - where do I get it?

Today I took the D800 for a short ride and mounted the Sigma 150/2.8 nonOS, found out it didn't focus, it works smoothly on the D850 (where I suppose next FW upgrade might brick it), I don't use the lens much but I'd still like to have it working also on the D800.

Any link/hint appreciated

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Giovanni - 70% GAS affected
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Nikon D850 - Nikon D800 - Nikon D2Xs - Fuji S5Pro - Nikon F - Nikon F3
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 Giovanni_1968's gear list:Giovanni_1968's gear list
Fujifilm FinePix S5 Pro Nikon D2Xs Nikon D800 Nikon Z6 II Nikon AF-S Micro-Nikkor 60mm F2.8G ED +19 more
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