RAMBo 1.3l help

My Taz had a 1.1b board and i bought a 1.3l to upgrade. Buy as soon as I got it i was doing 3 things at once and flashed something i shouldn’t have or done something to it that now the computer sees it and recognise it but i can’t flash anything on it. It won’t open the serial port i just get a time out. I looked online how to reset it and can’t figure it out. Any ideas how to reset the board. I tried holding reset then plugging it in and nothing. I hate to have wastes 80 bucks for nothing.

You should be able to go into device manager and delete the driver so that you can hopefully make a successful connection.