Adb doesnt work in Asus Zenfone 5

My phone can't connect to the pc with the Adb command, and actually i really dont know what do, 'cause in the telephon there is not a OS because i've done an hard reset. If it can help when i go in the recovery appear the message "E:Can't open /tmp/update/update-script.log
Pls im desperate, i really dont know how to flash a rom in my device :crying: