Would it be possible to unlock a Samsung Galaxy S4 Active (i9295) to use with Verizon?

I unlocked my brand new ATT Galaxy S4 Active via fastgsm.com cost me $12.49, not that $35-$50 nonsense.
It said instant unlock, but took about 6mins for email to come with unlock code.
I also did the NV setting change to make the ATT S4 a full-fledged Tmobile S4
here is the link,
How to Enable T-Mobile HSPA+ AWS Bands on AT&T Galaxy S4 SGH-i337/SGH-i337M! | GalaxyS4Root.com
Hope this helps guys, and btw I signed up for this forum just to post this one reply. :D

What is NV setting change ?
 
I used to think the same thing, but apparently verizon, and sprint both use gsm if you are on an LTE network, if you are 3g or below then yes you are on cdma.
 
I used a program called Towelroot.apk and apkinstaller from the play store. You just copy the apk file to your phone and then run the apkinstaller and it does everything. It even disabled KNOX.