dell Venue_7_3740 problem flashing android system help me plz

hi gys i tiered for searching and try to flash android system to my tablet dell 7340
the tablet restart on fast mood and no recovery mood installed
i try to flash YTP802A119500-2014-07-16-22.tgz
from here http://opensource.dell.com/releases/.../A195/Unbrick/
https://youtu.be/5iHHfaBCcdY
when i try to flash android
YTP802A119500-2014-07-16-22.tgz
i have a error in adb talk that show on vedio
https://youtu.be/K5diC7wc8CA
plz help me as soon as