Well I'm searching about this topic for hours now and wanted to ask people about the problem I'm having. You might not see this as a problem depending on your perspective too.
Keyboard: Corsair K55 RGB Pro Membrane

Long story short, I want to remap/reassign/reprogram the G Keys (macro keys) to function keys above F12 (so G1=F13, G2=F14, G3=F15...) and it looks impossible

• Default keys for G Keys are numbers (G1=1, G2=2...) so I can't solve it by doing a factory reset.
• iCUE software and my keyboard's firmware is all up-to-date.
• The official Corsair iCUE software does not have a feature to write remaps over onboard memory so I can't even use the official software to remap from the onboard memory. I don't want this software to run in the background.
• The only thing I'm able to do is press the macro button on this keyboard to start recording keys for macro keys.
• I can't trick it by making a program press F13 after I start recording because it has nothing to do with the operating system.
• I saw that there is a software on linux (which I have Arch installed on my computer) for corsair hardwares. I don't know if it's too different from the original software.
• I don't know if I can remove, modify or edit the firmware to reprogram those G Keys. It's probably possible but needs some reverse engineering as I suppose. (I don't have a problem about warranty)
• I also searched for 3rd party firmwares compatible with corsair keyboards and found nothing.
• Well I can use an adapter between keyboard and pc to send a different data to pc but it will increase the delay so it's not so efficient.

What do you think? How would this problem be solved? Don't say things like buy a new keyboard or stream deck 😁 I just love this kind of keyboards (big and has lots of functions) and don't want to switch.
^{I know this post is almost useless because I don't know anything about reverse engineering :/ But I probably will pay a person to do it for me as soon as i figure out.}