restart the tablet with the keyboard on, go to the first installer in folder 1, install it, take off the keyboard, reconnect it, install the second installer in folder 2, when finished, take off the keyboard and reconnect it, and run the third installer and when finished take the keyboard off again and reconnect it, restar after.
it should work. the thing is, thos installers flash the firmware of the keyboard and update it, for that it has to disconnect thekeyboard and put it in flash mode. you need all 3 drivers installed (link in the first post)
also, if you need the whole lot of drivers, in the forum someone posted it. download it and go to the .inf files and chose install for each driver.