there should be ways to detect the kernel version but it requires you to be some wizkid and put together some xbe that scans the kernel version. From my understanding an xbox that doesn't work with the generic fonts have yet to be discovered.
First I would to congratulations! I did a VERY GOOD work on this installer.
BTW, I have a Xbox (v1.6) which generic fonts don't work, I got some issues with them.
i.e. If I reboot the xbox via EvolutionX menu with the tray open, the xbox frooze in a black screen. So, I put the fonts for kernel 5838, then it works fine.
Hope, you know what I'm doing wrong or if the xbox just work with generic fonts.