Which zip do I download? LS720ZV7_upgrade.zip, Odexed_Stock-LS720V7.zip or Deodexed_Stock-LS720V7.zip?
That depends on how your F3 is set up. If you're on V6, rooted, have removed a lot of the preinstalled software, and don't want to spend time rebuilding your F3 you need the upgrade zip.
If you want to start from scratch with V7, then the other zips are fine to use. Remember to wipe /system /boot /data /cache /sd-ext and dalvik cache before flashing.
You can also use the unbrick method if you want the cleanest path to upgrading with V7. It's also best to use this if your phone has soft bricked.
Whichever method you use, don't forget to use towelroot to reroot the F3, and upgrade CWMT to the latest version. Don't forget to make a nandroid backup before upgrading!
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