300mm f4 PRO v9.0 firmware version number??

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Bisonbison
Bisonbison Contributing Member • Posts: 683
300mm f4 PRO v9.0 firmware version number??

I bought a used 300mm f4 during the recent holiday sale and I am just trying it out on my OM-1. Out of curiosity, when I mounted the lens, I checked the firmware - It tells me the lens firmware is ver 9.0!! The latest firmware on the website is v1.5

Has anyone seen anything like this before?

The lens is also giving me errors when I use the manual focus clutch mechanism, when it immediately starts giving me a "Please check the status of a lens" error.

Quite disappointed as it was marked EX on the website and looks to be in good cosmetic condition. I will be returning it and am trying to decide if I should exchange it for a different copy ($150 more) or just straight up return it.

 Bisonbison's gear list:Bisonbison's gear list
OM-1 Olympus M.Zuiko Digital ED 60mm F2.8 Macro Olympus M.Zuiko 300mm F4 IS Pro Olympus 12-100mm F4.0
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