Ricoh GRDIII firmware upgrade: Mac compatible?

N05J3W3

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Canada
Looking into the GRDIII, and I'm getting the impression from online resources that the firmware upgrade is Windows-driven.

Can anyone conform whether or not this is possible to do on a Mac [OSX] platform?

Thanks,

David
 
Not sure about the GRD3 but the GRD4 firmware update appears to be o/s independent. I don't have OSX or Windows just Ubuntu and I just copied the firmware file to a freshly formatted SD card (formatted in the GRD4) and went to the firmware menu in the camera and selected upgrade and it worked fine.
 
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