Is the OTA update downloaded before you allow installation?

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My XT912 is flashed and rooted so I do not want the latest update. I can't seem to get rid of the reminder even though I froze the update program with the Disable Service app. I can't find a file for the update so I assume it hasn't actually been downloaded yet. What else can I do to get rid of the update notice?

Sent from my BN Nook HD using xda app-developers app
 
My XT912 is flashed and rooted so I do not want the latest update. I can't seem to get rid of the reminder even though I froze the update program with the Disable Service app. I can't find a file for the update so I assume it hasn't actually been downloaded yet. What else can I do to get rid of the update notice?

Sent from my BN Nook HD using xda app-developers app

After I discovered ES File Explorer does not view hidden files by default and turned that feature on, I found the update file. I deleted it and haven't received an update notice since but I won't be convinced it has gone away until I don't see it for a couple of days.