Redid the rockbox installation with the utility.
Anyway, I’ve never connected the player to PC in RB mode cause I did it once and the device driver installation or something failed and I never tried it again.
However, yesterday, I accidentally connected my player to PC forgetting it is on RB mode, this time the driver installed successfully, and 2 additional folders appeared in the player’s root folder. “##MUSIC#” and “##PORT#”.
Been working flawlessly ever since, been turning the player off and on about 10 times now, both to test and to listen to music, working perfectly.
Funny that I’ve been looking for help all over the place and it gets fixed by a fluke… Thanks for all the help, fingers crossed that it keeps working