Default [Q] Haven't ever been able to upgrade firmware on Note 3 since purchase - what's up?

Hola,

Got my Note 3 a while back, and I'm getting itchy firmware fingers!

Maybe I'm being stupid - but so far I haven't had any luck in 'automatically' finding updated firmwares - still sitting on the MHN one that was installed when I bought the phone back on November.

Am I doing anything wrong? Do I need to root to be able to update the firmware? KIES says I'm on the latest... Not a network locked phone - have used t-mob, orange and currently a 3 sim.

Halp!