Flashing any leak takes you off the ota path. The updates are designed to update the last official release... Not leaks. In order to install the ota you will need to be on 905. Because you are on ics I don't recommend going back to 905 and keeping data. In other words you're looking g at an fxz back to 905 and either restoring apps from a backup or installing them clean. The HoB has fxz support built in should you need it.
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