Cant install update using TWRP

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http://androidforums.com – Hey guy's, so I've been trying to install update 2.13.651.1 on my phone but every time I get multiple errors and it fails. I've unlocked the bootloader on my phone, rooted it and got TWRP Recovery using this tutorial: How to Root HTC Evo 4G LTE! [Unlock Bootloader][TWRP Recovery] | HTC Evo 4G Hacks! I've tried installing it by pressing install and swiping in the recovery but no good, unless that's not how you install updates... So how can I update my phone? Am I doing something wrong? And also, how come I received this update instead of 3.15.651.16? It only gives me this update every time I (General)