GEMINI RGUI (possibly MENU as well) remap issue due to layout mismatch

[Laments]

Device:
Gemini Dusk (Nov 2019)

Firmware Origin:
From Hexgears Configurator v1.0.2-r2

OS:
Windows 10, v.1903

Version:
0x048B

• Reproduction Steps:

1. Assign RGUI to any key on Base Layer
2. Flash keyboard
3. Reassign RGUI to be LOCK-1
4. Flash keyboard again
5. Observe: Menu comes up when hitting RGUI instead of LOCK layer engaging.

• Resulting Issue:
  It's not possible to remap RGUI because the configurator and firmware KLL layouts have a mismatch.

Please note: I believe this also may occur for MENU key as well.

[joelspadin]

Related: kiibohd/configurator#152

[mathewng]

I just bought this keyboard too and I have this workaround.
Adding the two lines below into Custom KLL section in the hexgears configurator defines the MENU and FN keys.

S106 : Layer[1];
S108 : U"App";

You can amend the right side of the colon to any key you want to output.