MT300N-V2 not working after upgraded

I have upgraded the software of my MT300N-V2 router to the 3.212.
During the upgrade process, it never reached the 100%, after that it does not work anymore.
I cannot even access the admin panel.
Any help please?

Might be best to try reloading firmware via a uboot

It cannot boot now?

Not sure why but can you use uboot to debrick.