Elevated NanoStation (NSM5) on ePMP AP > 3.5.2

Hi,

Can anyone confirm if it is possible to connect an elevated nanostation to an AP running v4 firmware.

Everytime we do so, the CPEs fail to re-associate (not quite 100% but someone may have mislabelled those). The nanos take the firmware without issue but will not connect. Naobeams etc all connect without issue as obviously do Force 180, 200, etc.

I am certain I read somewhere that there was a compatability issue but I cannot find the reference.

Thanks,
Barry