USB drive: make, model, capacity?
I tried different USB model and different capacity ,but it did not work and stuck on reading mode
Do other USB drives work?
No , I tried other USB drivers ,but it did not work and stuck on reading mode
Does the USB drive shown work in other devices?
Yes,It is working in other devices
How is the USB drive formatted and what format is the stereo expecting?
USB is FAT formatted and i am not sure about format that my stereo expecting
I tried other formats,but it did not work and stuck on reading mode
Doesn't say anything about the usb. I'm willing to bet it has to be FAT32. Reformat the drive and put only 1 song on it, something that isn't a really long filename. See if that works. If it does, then it might be stuck reading either a very long name or the filename has improper characters.
When I installed an ACM into my older jag so I could support usb playback, the files on the usb had to follow a certain file structure. There was a software tool that would take the drive and reorganize the files into its readable file structure. It's possible yours is the same.
I've never heard of a Speranza before, but you can try asking the dealership.