Requesting bios update file to aftersales for weeks without reply, I am now applying a simple and safe solution, in order to push function keys without pushing Fn key on my Gemibook.
There is keybord mapping editor included in microsoft power toys, naming ‘Keyboard Manager’. Among hooking tools like Autohotkey, this utility is easy to to use with GUI.
Using this utility, we can change keyboard mapping of F2 to F4 and F8 to F12 like this;
Volume mute to F2, and F2 to Volume mute
Unfortunately F5 can not be hooked, we can appropriate relatively not so important F3 with F5 like this;
Volume down to F5, F5 to F3, F3 to Volume down
May this message help some of chuwi users!