VIM3 does not come up after "fastboot reboot bootloader"

After attempting the following

fastboot oem format
fastboot flash bootloader u-boot_kvim3_noab.bin
fastboot erase bootenv
fastboot reboot bootloader

VIM3 pro stuck in white light flashing, tried power, reset button, nothing can get the board to either fastboot devices or adb devices. can help check this problem

@HLVim3 You can refer to this.
VIM3 Android R(11) V210604 Preview Rom Release - Announcements - Khadas Community