First make ur device s-off and change cid to supercid (11111111). Then install a custom recovery (do not root it device, leave it unrooted). Restore it device with an nandroid backup (wwe stock deoxed is somewhere here). Boot and u should get a update notification for android 4.3. Download but don't install it. Open the ota and grab the recovery. Flash it via fastboot and boot device again. Now check for updates and let the device install it. Here u go fresh and complete stock android 4.3 that's how it works for me. Bootloader was unlocked while I did this. And u will get future updates too
P.s.: I rooted it after the update and I also can confirm that sense toolbox of adhr Rom is working fine too
thank you for the explanation! just to confirm; it works with Deodex too? I thought only Odex would work...