I have two Nexus 5 phones in my possession, both currently on 4.4.2 (Cataclysm and AOKP). I've recently noticed that the N5 running 4.4.2 Cataclysm has been using an immense amount of background data for 'Google Services' and did some digging to find out what it was. Turns out the phone is constantly re-downloading an OTA update, failing to flash it, then re-downloading it again, and so on.
There's a few attached images that are related - the file it's downloading, and the data used so far.
I found a couple of supposed solutions on various XDA threads and disabled the update service at startup, as well as installing FOTAKill.apk to system, but somehow it's still downloading and it's wearing me down as I can't figure out how to stop it. I understand an update to 4.4.4 would fix it, but i'd rather not as the person currently using the phone isn't all that keen on me taking time to flash & restore backups etc.
Are there any fixes for this that can be done by removing/disabling system services or the like? If it comes to it, I may just be able to block access to that particular ZIP in pfSense/SquidGuard.