hardbrick!!! please help me!!

I have a shield tv 2015.
I flash the recovery image for shield tv 2017 by mistake.
I flash it because after the ota update to android 7.0 allot of things doesn’t work.
Everithing was run fine but after the reboot the shield dosn’t boot anymore.
Now is in APX mode. I try software mode, i try hw mode on reboot but nothing works.
What can i do?