FAQ: the BeagleBone AI-64 won't boot after updated the uboot

I flow the instruction Update software on BeagleBone AI-64 — BeagleBoard Documentation to update the uboot. The update script run successfully. But the board won’t reboot to the linux kernel anyway and only the power LED is light. Then I use other SD card with new original image to boot he board and got the same failed boot. How could I to fix it?

What image did you use?