Building upon Swaqq's PS4PRX Tool that was previously released and proceeding his PS4 Trophy Unlocker PRX Demo & PS4 Game Patches Repo, today PlayStation 4 Scene developer @Backporter (Kernel_Panic___ on Twitter) updated PRX_505 adding PS4 ELF Injection via PS4Debug alongside a 'Refresh' button to his Github repository. 
Download: PRX_505 (Latest Version) (PRX Loader - includes PRX_505.exe, libdebug.dll, INIFileParser.dll and INIFileParser.xml) / GIT
He also can be found on his GamerSixVideos YouTube Channel and Official PS4 Game Modding Server Discord Channel for related help and tech support.
Changelog:
PRX_505 v2.0:

Download: PRX_505 (Latest Version) (PRX Loader - includes PRX_505.exe, libdebug.dll, INIFileParser.dll and INIFileParser.xml) / GIT
He also can be found on his GamerSixVideos YouTube Channel and Official PS4 Game Modding Server Discord Channel for related help and tech support.
Changelog:
PRX_505 v2.0:
- Added ELF injection via PS4debug
- Added A Refresh Button
- Initial Release, needs testers.