I also never managed to compile the kernel... But normally this is not needed. As far as I can understand,...

Commenting post 30: I also never managed to compile the kernel... But normally this is not needed. As far as I can understand, the kernel is almost never recompiled across different versions. Only the boot.img is unpacked/repacked, some config values are changed, but the kernel itself is apparently never touched.

When you compile B2G the first time, it will ask you to connect your phone. It will download the kernel from your phone, and use it in all new builds.

Actually recently I always used @cargabsj175's builds from http://elsimpicuitico.wordpress.com/ He manages to always make better builds than mines There is always a boo.img included, but AFAIK the kernel is the same...