I rooted my Galaxy S4 on Verizon earlier today (well, attempted to) with VRoot. It worked, but everything was really sluggish so I attempted to flash back to the stock Samsung ROM. I discovered that since I was running 4.3 with the MK2 OTA, I can't flash a previous version. I can't find a copy of the MK2 ROM anywhere. Does anyone here have any suggestions or maybe a link to the MK2 ROM for the i545 on Verizon?