Problem: Unable to ROOT device from the moderator ~~~~~ SOLVED
I was rooted on the previous stock build (G900PVPU1BOA6). Then thought it would be a good idea to update firmware before flashing the Mother of All Roms (MOAR) . Little did I know that it was only for G900PVPU1BOA6. Since I couldn't update directly through phone I updated through Samsung Kies. ( Removing ROOT and Twrp). Then I wanted to start fresh. ( Everything back to default factory settings). Then I tried rooting again (CF auto ROOT) and installing a custom recovery (Twrp) but then Odin v3.07 failed a quarter of the way through. (Failed authentication).