[Q] D855 and AWS (Band 4) mod topic

Hello
I'm sure this had been asked before and I am well aware that I cannot use AWS (LTE Band 4) on my Lg G3 D855 without moding.
However I've read on the Samsung S5 forums that you can enable the band with a few mods.

I am just wondering if there is any success (or failure) stories?
Did anyone actually did the mod and got the AWS working? (Specifically T-Mobile 4G)

Thanks!