I currently use V1.1 with the VLog-L software option installed. Does the Panasonic upgrade process automatically preserve the VLog-L option or is something additional required?

The V-Log Option is preserved.

Thanks Cary. Now I will go ahead with the update.

2.1 firmware

https://www.brianrhodes.tv/single-post/2017/10/14/Panasonic-GH5-firmware-update-21



Following bugs were found after updating the firmware to Ver.2.0 but now they have been fixed.

1.[Power Save LVF Shooting] was automatically set to [1 sec].
(This makes the camera go into sleep mode in 1 sec in a standby mode.)

* [Power Save LVF Shooting] will be set to [OFF] when the firmware Ver.2.0 is updated to Ver.2.1.
If you would like to enable [Power Save LVF Shooting], please set it on manually by selecting a designated time.


2.The parameters of picture quality adjustment in Photo Style were all set to -5 when setting the recording mode to [MP4 HEVC(AAC)]. This bug has been fixed.

* The parameters of picture quality adjustment in Photo Style will be reset to ±0 when the firmware Ver.2.0 is updated to Ver.2.1.
If you would like to adjust the picture quality in Photo Style, please adjust them manually.


3.There were cases where [V-LogL View Assist] did not work, This bug has been fixed.


4.There were cases where motion pictures recorded in [AVCHD] cannot be divided. This bug has been fixed.