GL-SFT1200 broken after update for beta

I updated my GL-SFT1200 to the beta, and it was successful.
However, the router was inaccessible and the WiFi name did not appear.

I accessed the GLINET FAQ and did the following:
Reset + access to (static in network settings).

I can access the website to resend the renamed file with the “img” extension, it sends it but nothing happens.

Need help.

You should not rename the firmware.

You should ownload the .img file GL.iNet download center