How to redefine keyboard keys in Windows 10?

Question

Keyboard

I bought a new keyboard for home Sven KB C7300EL Its
advantage is that it shines with blue light with a night backlight.
But there are also a couple of jambs - in place of the right control (under the thumb, if you keep your hand on the control buttons) there is a button ... to turn on the backlight.
And instead of the left button "Win" - for some reason, the laptop key Fn
Well, "\" is not to the left of "Enter", but immediately to the left of the "backspace".
In general, I need to redefine the keys to be kosher.
In furry times on Win98 already did this. Advise how now it can be done in Win10 for sure.

Answer 1

The Best Keyboard Layout Editor
For Windows 10, 8, 7, Vista, XP and 2003 (32- and 64-bit)
www.kbdedit.com
Microsoft Keyboard Layout Creator 1.4
https://www.microsoft.com/en-us/ download/details.a...

Answer 2

Fn and the backlight button cannot be programmatically transferred in any way.
only modification of the keyboard firmware. but for this you must first merge it, then modify it correctly and finally find how to write it back