Question Samsung Wave 2

After flashing my Samsung Wave 2 can't turn on, can't go in download mode, no charge indicator....
Log from Multiloader V5.65.
Download Start Ch[0]
FOTA 2621.5KB OK[1.2s]
All files complete[1.7s]
I solved my problem with following:
1: take out your battery
2: connect your mobile to your pc using the usb data cable
3: keep pressed these three buttons: Vol- , Menu, Power
4: still keep them pressed and put back your battery to the phone. this is not too easy but actually its possible
5: the mobile will go to download mode, flash with odin.
Xperia Z