The GH5 Gets an Impressive Firmware Update This September
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Feature-boosting Panasonic GH5 Firmware 2.0 is officially live: Digital Photography Review
Lumix - New Panasonic LUMIX DC-GH5 firmware Ver 1.1 to be released on April 24th at http://panasonic.jp/support/global/cs/dsc enabling our much anticipated 4:2:2 10-bit video recording in either FHD [MP4(LPCM)] / [MOV] and
Panasonic GH5 firmware update enhances video performance - Camera Jabber
Panasonic Reveals Major Firmware Updates for S Series, GH5, GH5S, and G9 | B&H eXplora