TheFloW released VitaShell 1.61 for fix some bugs one day after VitaShell 1.60 which supports USB massive storage on PSTV/Vita TV. You can update your VitaShell via internet or download the latest firmware from github.
■ Fixed database corruption crash by inheriting ‘calendar’, ‘mms’ and ‘mtp’ when mounting USB ux0:.
■ Fixed bug where insufficient memory dialog appeared on uma0:.
■ Fixed bug where pressing triangle crashed if unsafe mode was disabled.