Need Original Live Demo Firmware for the SM-N920x Thx

I need the original firmware SM-n920x Demo Live to fix a Demo N920x. I forgot to Disable the Master reset before I flashed it to another firmware.. Now it can not Master reset because the MDM is locked.. I need to reflash original Live demo file to allow Master Reset using the Master code for Demo Live..

Please help

Now the Phone is having is issues with touch wizard screen crashing