Here is my OTA 4.4.4_21.11.56 peregrine (XT1045).. I have not seen a full (factory) FXZ for the XT1045, Nore have I ever seen it posted to the firmware pages..
One would flash this zip in TWRP or CWM..onto the existing (4.4.3)..
Here >> https://docs.google.com/file/d/0B67R...p=docslist_api
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