iPod Mini (1st Gen) having connection issues to computer.

[mvcs]

Hey, I rockbox-ed my iPod Mini and whenever i connect it either using Rockbox or Pixo OS (the apple default os) and try to make anything, it freezes and has an I/0 issue with connecting.

On windows, it spits and I/0 connection error and on MacOS, it gives me an error code (which involves connection issues.)

I have tried:
Pixo OS and Rockbox
Rebooting
Using Windows and MacOS to connect.

It is extremely slow going from folder to folder and the only folder i managed to make (after waiting some time) worked, but everything else doesnt.

If for whatever reason this isnt fixable, please provide a way for me to sync my music to my ipod.
(WITHOUT finder or apple music, since i cannot make playlists or manage any of my music i put onto my ipod.)

(PS: I can play the music already on my device.)