Install PPSSPP (PSP) Emulator 1.4.x Version In Ubuntu/Linux Mint

PPSSPP is a PSP emulator (PPSSPP an acronym for "PlayStation Portable Simulator Suitable for Playing Portably"), PPSSPP is an open source project and cross platform available for Linux, Windows and Mac (The source code also unofficially supports a wide variety of operating systems and platforms, including Raspberry Pi, Loongson, Maemo, Meego Harmattan and Pandora). it is licensed under the GNU GPL-v2 and written in C++ language, it translates PSP CPU instructions directly into optimized x86, x64 and ARM machine code, using JIT recompilers (dynarecs). It lets you run PSP games on PC in full HD resolution but you may not get perfect results. It can even upscale textures that would otherwise be too blurry as they were made for the small screen of the original PSP.
It can run on low specification hardware, including ARM processors as long as there's support for OpenGL ES 2.0. It can run PSP ISO file from your PC, and also from PSP disk but you need to specify location of Game within PPSSPP.
It can save and restore game state anywhere, anytime; Continue where you left off by transferring saves from your real PSP; Crank up the anisotropic filtering and texture scaling.




Changelog of this version:

• Fix bug causing several games to crash on ARM64, including Metal Gear Solid: Peace Walker
• Software rendering crashfix
• Fixes for homebrew: Timing, MEMSIZE
• Fixes for some common hangs and crashes
• Vertex decoder optimizations
• Corrections to mipmap bias and selection function
• Major improvements and fixes to software renderer, including mipmap support
• UI background image support
• Fix crash in framebuffer blits affecting Persona 3
• Support D3D11 (performs better than OpenGL or D3D9 on most hardware)
• Audio quality improvement (linear interpolation)
• Hardware spline/bezier tesselation in OpenGL, D3D11 and Vulkan
• Post-processing shaders in D3D11
• Prescale UV setting removed, now the default (improves perf)
• High DPI display fixes
• Various fixes for UMD switching for multi-UMD games
• New audio setting to improve compatibility with Bluetooth headsets
• Various desktop gamepad compatibility fixes
• Workaround for mipmap issue, fixing fonts in Tactics Ogre Japanese
• Assorted minor compatibility fixes, code cleanup and performance improvements

To install PPSSPP (PSP Emulator) in Ubuntu 17.04 Zesty/16.04 Xenial/14.04 Trusty/Linux Mint 18/17 open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:
>>For Normal Version
>>For SDL Version
>>For QT Version

For other Linux distributions checkout this page.
That's it