PS4 Flash Dump SFlash0Unpack utility last month and several PS4 Xplorer app updates, PlayStation 4 developer @zecoxao shared via Twitter some PS4 Unjail and FTP Plugin Unity Native Code which is both based off the previous release by @RetroGamer74 with help from @cfwprophet and forked from RetroGamer_74's Github repository for PS4 scene devs.
Download: PS4_UnjailPlugin_Unity_NativeCode-master.zip / GIT
To quote from the README.md: PS4 Unjail Plugin Unity Native Code
This is the source code for the Unjail method converted into a Unity Plugin to be used in Unity PS4 for homebrew development.
Open the SLN file into Visual Studio 2015. Be sure you've got the corresponding *** to build this.
When you compile it you will get in the upper folder of the project a new folder named Plugins. That folder has to be copied into Assets folder of Unity Project.
This Unity Plugin was developed by retrogamer_74 and the source code for unjail is part of the libHB developed by cfwprophet
Ftp support has been added to this plugin. maybe more will come, we'll see
Below is further insight on the plugin from RetroGamer74, to quote:
"The meaning of UNJAIL, is to be free of JAIL. When an app runs in PS4, I mean an app from the HomeScreen, the app uses user permissions. It hasn't got ROOT permissions. In that case you can not get benefits of kernel exploit to become root.
So the goal of this plugin is provide a FUNCTION CALL to the C# code of any Unity development to rise the privileges of the app and get OUT OF THE JAIL. When that happens, you can get access to USB0 for example, and many other features.
Because of that the name of Unjail."