Default N7105 on three UK

Hello all

I am on three UK network who are taking a ridiculous amount of time to release the 4.3 update. All other uk networks released this in December.

I'm tired of waiting for them and want to get onto 4.3, probably the DN3 rom.

I've researched how to root via odin but what I'm not sure about is which baseband, where to get it and install it.

Has anyone else flashed this rom or any 4.3 rom onto the n7105 on the three uk network?

Thanks in advance

Sent from my GT-N7105 using XDA Premium HD app