Re: EX6120 Firmware update check never completes

When setting up my EX6120 wifi range extender with both 2.4 & 5 GHz wireless bands connected to my router, only one band on the extender will accept devices. On the other band, devices stay connecting... for 10 seconds before failing.

If I connect the extender to the router using only one band, then the extender will accept connections on both bands.

I have factory reset both my router and extender, and ensured the router, extender and devices are within range.

Is this normal behaviour?