Problem getting back root after updating to B321 topic

I was so glad to see the official B321 update that I quickly downloaded it and updated to it. Problem is in order to do so I had to go back to the stock recovery. Now that I've updated I can't get ROOT back. Mate toolkit and eRoot don't seem to work on 4.4.2. Anyone knows how I can get back root. I tried putting the update.app file for older 4.2.2 ROMs in the dload folder but update fails. Anyone please help.

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