[FIXED] Stuck on rainbow screen, replacing kernel.img fixes

Hooray! I figured it out!

Step 1: Download RC3 image from Download - OSMC
Step 2: Unpack .gz file
Step 3: Mount .img file
Step 4: Unpack filesystem.tar.xz
Step 5: Copy boot/kernel.img to SD card
Step 6: It works!

Regards
Eskild.