Problem after attempting FW update of Shadow to Beta

Hi all.

I have attempted to update the FW to the beta release but now I cant access it.

I’ve attempted to upload the stable FW in uboot but it just never seems to do anything.

constant ping to is continuous.

How can I recover this?

Which router you have exactly? AR300M or AR300M16?

Which file did you flash exactly? Can you give a link?