I need to return one of the two Pulse devices I purchased and rooted. I want to unroot first and tried the instructions in another thread here as described below:
Gain an adb root shell (adb root, then adb shell)
mount -o,remount -rw /system
mv otacerts.zip.old otacerts.zip
This did not work. I also went into the security folder via Root Explorer, changed to RW and manually renamed the otacerts file to remove the ".old" This too proved unsuccessful. Even after a reboot, attempts to download the OTA update fail.
Any further assistance would be greatly appreciated.