This is for the L720T ONLY. I am not responsible for what you flash to your device..
Now this is the 4.4.2 NC6 Update (not rooted) Link! Dais Made Odin return to stock
And thanks to CNexus over at XDA we now have a rooted stock MK5 that I'm currently downloading to find out weather or not it's working fully and if it's an Odin tar or a CWM/TWRP flashable... either way here's the link.. http://cnexus.co/downloads/files/Misc/SPH-L720T_ROOTED_ODEXED_MK5.zip ALL THANKS TO CNEXUS AT XDA
TWRP 188.8.131.52 NC6 4.4.2 backup of rooted stock.
Make sure your recovery is TWRP 184.108.40.206, then make a backup of just one small partition(making the folders for us to follow).. like cache then reboot and go to a root file explorer.. like root browser or es file explorer. And copy/paste the whole file/folders I'm uploading in sdcard/TWRP/backups. Right next to the one you backed up.
Reboot back to TWRP and go to restore menu. Make sure the backup is there and restorable.. do a wipe of everything except internal storage and external.
Flashing may cause some slight fc's.. (force closes) this is to be expected.. it may even prevent you from singing in.. still try.. have patients.. if you can't at all.. (like the keyboard itself is fc-ing) do a battery pull and boot recovery. Wipe davlic and cache. Try again. It should still give problems.. but stable enough to sign in to gmail. Afterwards.. go directly to sprint zone.
(In this order) update prl, then firmware then software. (If not on NC6 this will update you to NC6 4.4.2)
Again go through the updates. And reboot.
Let google do its thing.. and your all set. Stock rooted and you can back this up as your own and get rid of mine.. lol ..
P.S. a factory reset may be needed afterwards too.
Dais Man's L720t Dev Folder On Mediafire