[Verizon Samsung Galaxy S 4] gigilie:
djmcho... try this:

1st method-Download following files: SuperSu 1.94, Bypass Wifi Enabler, Odin 3.10, Safestrap 3.71 & 3.72, MK2 System, MK2 Downgrade Odin Tar, Modules for MK2, NC2, NC5 or whatever systems you plan on visiting.

OK so youve got the above files on hand (external sdcard)

1. Open Odin and insert MK2 System into your AP slot.

2. Insert MK2 Downgrade AIO File into your CP slot.

3. Restart your phone to Download Mode or hold Vol-Down when powering on phone. Then back in Odin Press Start. Takes 10 Min to flash. When it restarts

4. This step is optional but you can Chose from either NC2 Hlos/Modem (gives you Sound no Wifi but flashing the bypass file will let you enable the wifi or should) or you can use the MK2 Hlos/Modem and this will let you use your wifi/tethering at 4.3 along with internet and messaging but phone wont work.

5. Once the MK2 system has loaded Root using k1mu's Saferoot method like normal. Then flash either 3.71 or 3.72 Safestrap.

6. Now you have choices you can flash 4.3 ROMS (to stock or ROM slots if using 3.71 otherwise just to Stock if using 3.72) like Hyper or gDux or whatever, or 4.4.2 Custom ROMs available in the SS442 ROMs directory or international ROMs or you can flash a stock / rooted 4.4.2 file for Verizon. After flashing any of these remember for safety to flash SuperSu 1.94 to ensure root.

7.If you flashed a 4.3 ROM remember to flash your modules. I sit at NC2 Hlos/Modem usually in 4.3. If your using 4.3 only just restart the Phone and let it boot like normal. Otherwise to upgrade back to 4.4.2 continue instructions or skip ahead to the New Method step 4....

8. Now navigate to the Reboot- Download Mode found in Safestrap.

9. Once in Odin again flash the NC2 Upgrader or NC5 Upgrader Odin TAR files.

Once your phone restarts your back to Rooted/Custom or whatever you chose to do. If your just using 4.3 you can ignore last

NEW gogolie Method files:

MK2 Boot Only (dont necessarily need it but having it around is handy), NC2 Boot.img upgrade only (nother not needed but handy if your going to be bouncing back and forth from 4.4 to 4.3), NC2 Safestrap Flashable Upgrade, NC2 Wifi/Modem/Hlos/Modules all in one flashable in safestrap, MK2 Downgrade Safestrap Flashable AIO, NC5 Quick Flash All Upgrade Safestrap flash,

You'll also need the Odin, SuperSu,Safestrap,Modules and MK2 System / MK2 Downgrader AIO files listed in first method.

0. (From 4.3 Rooted never upgraded phone with Safestrap you can boot to safestrap and skip to step 3.)

1. Flash MK2 System in AP slot using Odin, when phone restarts hold vol-down and then flash the MK2 Downgrader AIO file in the AP slot (note can do all in one flash with the downgrader files under CP slot but AP and AP works the best)

2. Boot the Phone and then Root using k1mu's methods. Install safestrap. reboot to safestrap

3. Install the custom ROM or prerooted ROM of your choice (doesnt even have to be rooted if you flash supersu file it will then have root). Flash SuperSu, the modules for firmware your intending on upgrading to.

4. Flash the QuickUpgrade Safestrap Flashable file for either NC2 or NC5, add to the zip flashing cue NC2 or NC5 Wifi Fix and SuperSu again.

5. Reboot the phone to Download Mode then flash either the NC2 or NC5 boot.img only file under the AP slot. You can also fill the CP with either MK2 Hlos/Modem or NCx hlos/modem files but you arent required to more of a safety option incase the safestrap flash doesnt hold.

6. If your having problems with the ROM or system you can try clearing the Cache or doing a stock recovery-system factory reset. or flash an NC2 Cache or NC5 Cache file found in my Safestrap 4.4.2 files folders then reboot and try booting the phone again.

7. You can now quick upgrade or downgrade with Safestrap and the up or downgrade boot.img file of your choice. This will allow for better mounting in safestrap at 4.3 then quick upgrade back to 4.4.2 by just flashing the opposite boot.img file your flashed the first time.

Enjoy. Thank or Donate if it works and saves time. I personally enjoy the safestrap flashable method vs traditional but personal preference.