Hi All.
Has anyone experienced and solved the problem of detection of USB devices in WAS / WAC 7500?

I was using that functionality without problems in my WAS 7500 for over 4 years and suddenly stopped detecting any usb device. However the same USB device on mainframe WAC is detected perfectly. The firmware is version 1.31. And the device meets the conditions specified in the manual, fat32 file system, less than 99 folders, mp3 and wmv files, rights, etc.

Any suggestions?
Thanks