Default [Q] Crash after Downgrade

I upgraded my SM-P601 from 4.3 to 4.4.2 and root with cf-root. but the root didnt work and i downgraded to 4.3. but it didnt complete. now i have a message on boot "Firmware upgrade encountered an issue.please select recovery mode in kies & try again". i tried to upgrade and downgrade with diffetent stock rom with odin but all of them failed at first and didnt keep on. pls pls pls help me