Zenfone Z00D cant boot. Doesnt pass asus logo

Hi
My problem started when my son forgot hos passcode to unlocked the phone, so i knew that a simple hard reset thru Recovery Mode will do the trick... well this phone didnt that option on Recovery mode menu only had:
-system reboot
-update via adb
-update via sd card
So i found a thread where one person suggested to erase the phone thru fastboot on a pc and flash a new recovery.img and the latest firmware on the phone will do it following this commands:
' fastboot format cache' wait till it's done
- 'fastboot erase userdata -w' wait till it's done
- 'fastboot erase system' wait till it's done
- 'fastboot erase recovery' wait till it's done

So last command "erase recovery" came up with an error saying unable to erase. Could not flash a new recovery image and now the phone will not pass the asus logo. So i need help really bad:confused:

Thanks for any input