To anyone with the T-Mobile b33 firmware. I need a stock nandroid and a backup copy of the stock recovery.img. It only takes a couple of minutes extra and will help further development for this device as well as give people a way to go back to full stock if needed.
The steps would be as follows.
Install kingroot 4.5.2, the twrp installer apk, and terminal emulator.
Use kingroot to get temp root.
Open terminal emulator and run the following commands.
Grant terminal emulator root access
dd if=/dev/block/platform/msm_sdcc.1/by-name/recovery of=/sdcard/recovery.img
Now you have a backup copy of the stock recovery.img in the root of your internal storage.
Next open the twrp installer apk and tap install recovery then grant root access. A couple seconds later you will get a popup saying "Success".
Next uninstall kingroot and purify and reboot to twrp by using the reboot option in the power menu and then holding the volume up button until you see the twrp splash screen.
Finally make a backup of the system and boot partitions then flash SuperSU after you have finished making the backup.
After that is all done put the twrp backup and the recovery.img in a zip file and upload it to google drive, mediafire, mega, box or whatever cloud storage you have. Dropbox won't work unless you have a paid account because they limit file size to 250mb on free accounts and the zip file will be about 600mb.