That's the one.
As you are moving between SDKs make sure you do a factory reset after flashing otherwise you don't get the benefit and certain low level settings won't be overwritten.
Also I have a mix of Apple and Windows (as well as Android) 'phones and PCs at home and this works fine with them (Apple devices can be a pain on the N66U on certain firmwares).
Factory reset as in Pin it for 15 seconds after flashing