Is there a build for the N66 that includes the new FCC verification requirement? I'm on ASUS 380_3831, which does include the verification mod. I'd like to move to Merlin without rebuilding the router, but I can't find Merlin 380.60 for the N66.
If you want to move to RMerlin firmware, you will need to reset to factory defaults and manually and minimally configure the router in any event.
But, you're right. Right now, there is no RMerlin 380.60 Beta 2 firmware available for the RT-N66U (or the RT-AC66U) as those source gpl files are not available to the public yet.