[Steve Miller]

2014 BMW 535i xDrive w/ Harmon Kardon -

I inserted my USB Thumb drive into the armrest spot and it immediately recognized. I transferred the music to my hard drive and it all worked fine.

Now, when I took the same USB and changed the music on it but when I go to plug it in its not showing up anywhere - I even tried reformatting but still nothing - I tried another one and it doesn't show up either.

Seems strange - Am I doing something wrong? Has anyone else had this issue?

Thanks!

[wcr3d]

First step, try a different drive.
These things go bad all the time and the cheapest to check and/or replace.

[ghost_1on]

I would also suggest make sure its the correct format (NTFS/FAT etc) since I've had similar issues with this before.