download both .debs (instructions are for external mmc and n810)
run xterm
type in:

root
cd /media/mmc1
dpkg -i xulrunner_1.9.1a2pre_armel.deb
dpkg -i --force-depends fennec_0.6_armel.deb

now you have fennec installed. it works, takes some seconds to start and crashes a lot... and it have the new finger-friendly theme