"New" G3 d851 -- rooted out of the box??

[AC Question]

Hey, got a NIB (supposedly) G3 recently. Making the jump from Windows.
It's the T-mobile version and I'm using it with AT&T.
Problem -- It is still on 4.4.2. I expected a couple updates once I got it up and running. At least to 5.x, possibly 6.0 as it appears that's what T-mobile is currently offering on this phone -- as of August.
No updates have arrived and I've been searching forums for hours trying to figure out a work around. It won't update via LG PC suite and I haven't gotten it to work through the LG mobile support tool.
So just for kicks and grins I d/l'd a root checker and it says I'm rooted! No idea why that would be. Any thoughts?

So no my searching has changed to how to upgrade it manually.

 

[Tim1954]

I haven't heard new devices being rooted before... i hope you didn't get it from China...

 

[jshaw1976]

Yes, it was an overseas ebay purchase. I think it shipped out of singapore.
After one failed attempt I was eventually able to flash it to the stock 10c 4.4.2 software. After a day's worth of updating it is finally running the 30e 6.0 released in August.
Now I'm reading up on how to root this version so I can get rid of all the T-mo junk.