Hi...
That is strange but I came across
page which might help you to avoid having to go the USB route.
If, by some chance, the kernel wasn't upgraded (which I don't think was the case but I could be wrong,) you can always try going up. Found this page
here, which also includes the kernels
here.
Unfortunately, this is an area I don't know a whole lot about so my assistance will be limited.
Regards...