I've been trying to compile the latest mainline kernel for my Nspire (4.7-rc2) but I have, to be honest, failed miserably so far in getting the correct configurations. Would anyone have a .config file for building a working kernel for the CX CAS? Using the older kernel I managed to get OpenBox running and other cool things, but  I couldn't get any drivers to load using an ArchLinux ARM rootfs, so none of my 2 USB Wi-Fi modules nor an Apple keyboard I had lying around worked.