You have no choice but to use the Rom that @russellvone provided to you. The reason your ota won't update is because inside of it is a file called updater-script. In that script it tells the device to run some system checks to your files in /system like your system apps for example and then cross reference these checks with the patch found inside of the new OTA. If these checks DO NOT MATCH then the ota will abort itself. This means you messed with some stuff in /system and your option now to keep this as simple as possible for you would be to use the resource russellvone has provided you. This will basically RESTORE your device and then you will be able to APPLY your OTA successfully.
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