you could dump what you have, dunno if it will make a difference, but I use nand flasher 360. dump it to a usb flash drive, dump the flash, then shutdown. remove the flash drive, use xebuild gui to rebuild the nand, then stick the flash drive in the system, power on, go back into nand flasher 360 and flash the image. shutdown again, remove the power cable, then hold the power button for 30 seconds to power cycle. after that, plug the power cable back in, and power on the system. hopefully, it works.