[HOW TO] Disable OTA Update Notifications!!!!!!!!!!!!!
Solution:
Step 1. Delete the update located in /cache/fota/ and then click the update notification prompt to install it, it will instantly fail and the notification will disappear.
Step 2. Disable Otacerts.zip located in /etc/security by renaming it to otacerts.zip.bak
Step 3. Disable FotaClient.apk and FWUpgrade.apk by renaming with .bak extensions located in /system/app/
Step 4. Reboot
http://forum.xda-developers.com/showthread.php?t=1856632