just install it over your firmware by unzipping and placing the hex file in the root folder of your ak100
I tried reverting to Listrid 2.0 from iRiver 2.10 and it didn't work. The Listrid hex file is on the root and stays there. When I disconnect the USB cable nothing happens. I turn it off and on again and still nothing.It's like the player doesn't detect it. Maybe I'm doing something wrong?