Once you install the beta firmware you can find the band selection option under Basic --> Internet

@darant Yea, try to reboot the router after you change the bands? (not sure if it helps, but worth a shot). Otherwise it could be that the tower is simply deciding to give you 3,3. I was told by one...

When you select a combination of bands, go to the Advanced tab, and double check that the bands are indeed connected simultaneously, not just one of them. Because even if you select random 2 bands,...

Great! Please share your findings when you do some tests ;)

@darant Try to go to the Basic tab, then Internet, and there you should see the option "Band select". Enable it, and then you can choose the band combination.

@livorno Hey thanks for the heads up. I misread their post title and thought they were talking about the MR600. I deleted my post there. The beta firmware is for the MR600. I can't say if there's...