Default [Q] Verizon I605 Note 2 rooting and update

I have a Verizon Samsung Galaxy Note 2 S (I605) Running Android 4.1.2. the phone is rooted with TWRP (4.5.0). I was trying to Update to 4.3 but it keeps saying update failed and taking me back to the TWRP menu to reboot.
I want to know if there is a way to update to 4.3 on a rooted phone and if not, what steps work best.
2. I have FoxFi and I don't want to lose it. Is there a workaround for FoxFi if I do update to 4.3