dm 500hd don't restart

  • I can not restart the 500hd original. I installed the latest firmware as elite dream but after a normal shutdown the green light and 'always blinking and does not restart, the normal procedure to reinstall the image does not go does not take the' ip then I switched to DreamUp after installing the driver recognizes the decoder but then block with the infamous message: upload completed waiting for acknowledge, I have also tried to uncheck network to connect it on other pc but don't restart .Thank you all for your cooperation