Razberry firmware upgrade failed

[sysardex]

Hi all.

I updated firmware razberry board using the interface IP:8083/expert/#/uzb
From this point the device is lost and does not respond.

Logs:
[D] [zway] SENDING: ( 01 03 00 07 FB )
[zway] Job 0x07 (Get controller info and supported function classes): No ACK received before timeout
[D] [zway] SENDING: ( 01 03 00 07 FB )
[zway] Job 0x07 (Get controller info and supported function classes): No ACK received before timeout
[D] [zway] SENDING: ( 01 03 00 07 FB )
[zway] Job 0x07 (Get controller info and supported function classes): No ACK received before timeout
[W] [zway] Job 0x07 (Get controller info and supported function classes) dropped: too many resends
[D] [zway] Job 0x07 (Get controller info and supported function classes): fail

[core] Notification: critical (z-wave): Can not start Z-Wave binding: Error: Bad data - communication failed

Led on razberry board does not blink when you turn on as described herein. http://razberry.z-wave.me/index.php?id=29

How to restore the firmware?

[PoltoS]

As stated in a parallel thread looks like power off during upgrade (right after new f/w was loaded and UI reports "ok", reflashing starts and takes about 10-20 sec).