vita unmake fself - TeamFAPS/PSVita-RE-tools GitHub Wiki
vita-unmake-fself usage
Usage:
Run: ./vita-unmake-fself.exe input_fself
(you most likely will be able to drag-and-drop also)
The output will be produced in the same folder with .elf appended on to the end of the original file name.
Building:
Dependencies: zlib
make install