Testing the firmware with sysupgrade failed on Flint

When updating Flint to 4.02 stable through web and uploading tar file, I get error message

“Testing the firmware with sysupgrade failed”

In router CP new firmware information is also not available.

Flint is on 4.01 beta.

The screenshot shows you’re using the axt1800 firmware for the ax1800. You’ve got the wrong firmware. The firmware you want is here for Flint GL.iNet download center


Use the .img file GL.iNet download center