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I bought the X5 on Fiio's statement that OTG would be supported in FW2.0. Unfortunately, it wasn't mentioned that the USB controller had to be Phison, Skymedi or a couple of others

 

Has anyone got a full-size SD card card reader or min 128gb flash drive working on OTG? Needless to say none of mine do

 

Fiio's useful help was to suggest I get the vendor to load the ChipGenius software and let me know which would work. Don't think Amazon will go for that?

 

Thanks for any help