hAP ac^2 doesn't boot after update to ROS7.0b8

[DeeZ]

Hello.
I have router hAP ac^2. There was installed 6.45. There was no config at all (rest. and then press delete config).
I upload routeros-7.0beta8-arm.npk to router and reboot it.
Now it doesn’t boot at all. I trid start netinstall, and power up with holding reset.
after 5 sec USR begins blinking, after 5 sec blinking stops, after 5 sec led go out. netinstall windows dosn’t how any device.

How to recovery router?

[mutluit]

Hello.
I have router hAP ac^2. There was installed 6.45. There was no config at all (rest. and then press delete config).
I upload routeros-7.0beta8-arm.npk to router and reboot it.
Now it doesn’t boot at all. I trid start netinstall, and power up with holding reset.
after 5 sec USR begins blinking, after 5 sec blinking stops, after 5 sec led go out. netinstall windows dosn’t how any device.

How to recovery router?

See solution in this thread http://forum.mikrotik.com/t/ac-2-never-came-back-to-life-after-update-to-ros7/140088/1