Keyboard and mouse not working in installer

It boots, and I can tell the kext works by the battery indicator working. But touch, keyboard and trackpad do not work.

[WhyToFly]

I don't have a lot of time to debug this right now, but I remember there being some issue with some firmware update and the BigSurface kext. I have not updated my firmware; maybe updating the kext on your machine could help?

I tried, now it just shows that I need to turn on a wireless keyboard and mouse (meaning no input device detected)

[SheltangW]

I tried, now it just shows that I need to turn on a wireless keyboard and mouse (meaning no input device detected)
Have you figure it out?