mobile

So I picked up the lg vs980 from Best Buy on Monday. Brand new,9.00 +tax which is a great price for this phone with no contract. In my impatience to root I did the root method and custom recovery that I used when I had the AT&T G2 . I then attempted to get the Lollipop OTA update. When booting my phone now I get the LG logo in the middle of the screen and in the top left I get
ERROR : boot certification verify
[922380]----------------------------
[922430]
[922480] Secure booting Error!
[922530] Cause: boot certification verify
[922580]
[922630]---------------------------
I can't get into download or any other mode. I can get into the factory reset screen and it says ROOTED in the top left.
When I select yes,push the power button and select start and push the power button instead of getting TWRP recovery or factory reset I get the above screen for 3 seconds and my phone goes black. Am I screwed because of my impatience? Any help and criticism (which is deserved) would be appreciated