The issue was resolved right after iOS 9 came out but it looks like you got some old stock. Unfortunately if you updated to iOS 9 prior to updating the FW of the iXpand iOS cannot detect the drive at all so you can't update the FW. This change required a FW update for the iXpand to continue functioning.
IXpand USB 2.0 (SDIX-XXX) is not detected in iOS13 - SanDisk Please update your iOS device to the latest version of iOS The issue have been resolved in iOS 13.1 and higher.
how to reset a sansa player) iXpand USB 2.0 (SDIX-XXX) is not detected in iOS13. Home SanDisk iXpand Firmware Update for iOS 13 iXpand USB 2.0 (SDIX-XXX) is not detected in iOS1
