What if I accidentally checked CDMA/LTE instead of GSM/HPA+ in the Galaxy Nexus Root Toolkit? I tried to use WugFresh's Galaxy Nexus Root Toolkit to root my device, but I accidentally selected CDMLA/LTE while I have a GSM model.

I tried flashing CWM recovery afterwards, but it didn't work. Now I'm stuck at the white Google loading screen. 

I tried doing a factory rest and flashing the stock rom, but it's still stuck.
In root toolkit use the bricked option, selecting soft-bricked, should flash stock, however make sure you select the right version of your phone in options (in NRT) before you start.