Cant seem to install Rockbox (Ipod classic 6G)

Just bought a iPod classic 6G, haven’t modded it, and I tried to install rockbox on it but when it told me to reboot it into dfu mode, my laptop (a m1 macbook) says an ipod has been detected but not identified). I then tried to use parallels to use windows to download rockbox but I cant restore it through itunes on windows, some error code 1429, looked online but didnt find a solution. Please help The stock os is enough for me, just wanted to use a theme