Seems RichDevX has made a working memory card extender. Now if we can crack the protection much cheaper micoSD could be used and I am sure could be streamlined. But for PSTV users wouldn't matter much. I found this on his IMGUR account. It works with stock memory cards and with all the latest info it seems it is a form of the exFAT file system so I could only be a matter of time....
Proprietary Vita memory cards may be a thing of the past soon
Proprietary Vita memory cards may be a thing of the past soon