1. 1. Introduction

In this tutorial I will show you have to run Persona 1 from steam and best
setting to run Persona plus modding it (This tutorial will be updated later)

2. 2. Installation

(I'm copying this from my sound tutorial)
"First thing you want to do is get a legally copy of Persona 1, I can't tell you where or how to download it for free but the best way to get a legally copy is to buy it from the ps vita US $20 or $30 then download it on your psp after that take the memcard put in your PC use PSN.PKG.Decryptor.&.Extractor to get the iso file. Or buy it for US $159.99 on Ebay" And PPSSPP https://www.ppsspp.org/

3. 3. Best settings

In PPSSPP right click your Persona 1 and "Create game config," after that go to "Game settings" and, use this settings:

3.1. Graphics

3.1.1. RENDERING MODE

Backend--Direct 11
Device--Your GPU
Mode--Buffered Rendering
Simulate block transfer effects--[+]
Software rendering (slow)--[ ]

3.1.2. FRAMERATE CONTROL

Frame skipping--Off
Frame skipping type--Number of frames
Auto frameskip--[ ]
Alternative speed (in %, 0 = unlimited)--Unlimited,
Alternative speed 2 (in %, 0 = unlimited)--Disabled

3.1.3. POSTPROCESSING EFFECTS

Postprocessing shader #1--Off

3.1.4. SCREEN LAYOUT

Fullscreen--[+]
Display layout editor

3.1.5. PERFORMANCE

Rendering resolution--Auto (1:1)
VSync--[+]
Render Duplicate frames to 60Hz--[+]
Buffer graplicate commends (faster, input lag)--[+]
Hardware transform--[+]
Software skinning--[ ]
Vertex cache--[+]
Clear framebuffers on first use (speed hack)--[+] older PPSSPP
Lazy texture caching (speedup)--[+]
Retain changed texture (sometimes slower--[+]
Disable slower effects (speedup)--[+]
Disable slower effects--[+]
Spline/Bezier curves quality--High
Hardware tessellation--[+]

3.1.6. TEXTURE SCALING

Upscale level--Off
Upscale type-- xBRZ
Deposterize--[+]
Texture shader--Off

3.1.7. TEXTURE FILTERING

Anisotropic filtering--Off
Texture filtering--Nearest
Screen scaling filter--Nearest

3.2. CAMERA

Camera device--eTronVideo older PPSSPP

3.2.1. HACK SETTINGS (MAY CAUSE GLITCHES),

Lower resolution for effects (reduces artifacts)--Off

3.2.2. OVERLAY INFORMATION

Show FPS counter--None,
Show debug statistics--[ ]

3.2.3. DEBUGGING

Dump next frame to log

3.2.4. AUDIO

Enable sound--[+]
Global volume--10
Alternate speed volume--Use global volume
Reverb volume--10
Audio backend (restart req.)--Auto

3.2.5. MICROPHONE

Microphone device--Your mic

3.3. Controls

Dpad Up--kbd.W
Dpad Down--kbd.S
Dpad Left--kbd.A
Dpad Right--kbd.D
O--kbd.Backspace
⨉--kbd.Space
▢--kbd.M
△--kbd.I
Start--kbd.Enter
Select--kbd.RShift
L--kbd.Q
R--kbd.E
Analog Up--kbd.W
Analog Down--kbd.S
Analog Left--kbd.A
Analog Right--kbd.D
Analog limiter--kbd./
Rapid-fire--kbd.LShift
Fast-forward--kbd.Tab
Speed toggle--kbd.`
Pause--kbd.Esc
Rewind--kbd.\

Enable standard shortcut keys--[+]
Ignore gamepads when not focused--[ ]
On-screen touch controls--[ ]
Disable Windows key--[ ]
Use Mouse control--[ ]

3.4. Networking

Enable networking/WLAN (beta, may break games)--[ ]
WLAN channel--Auto
Send discord "Rich Presence" Information--[+]
Enable built-in PRO ad hoc server--[ ]
Enable UPnP (need a few seconds to detect)--[ ]
Enable network chat--[ ]
Port offset (0 = PSP compatibility)--10000
Minimum timeout (override in ms, 0 = default)--0
Forced first connect (faster connect)--[ ]

3.5. Tools/Developer tools

Skip to GENERAL

3.5.1. GENERAL

CPU core Dynarec (JIT)
Show developer menu--[ ]/[+] (this is up to you)
Dump decrypted EBOOT.BIN on game boot--[ ]/[+] (this is up to you)
Enable driver bug workarounds--[+]
Allow remote debugger--[ ]/[+] (this is up to you)
Show on screen messages--[+]
Enable debug logging--[+]
GPU log profiler--[]/[+] (this is up to you)
Log dropped frame statistics--[ ]/[+] (this is up to you)
Save new textures--[ ]/[+] (this is up to you)
Replace textures--[ ]/[+] (this is up to you)

3.5.2. LANGUAGE

Load language ini
Save language ini

3.5.3. TEXTURE REPLACEMENT

Save new textures--[+]
Replace textures--[+]

3.6. System

Skip to UI LANGUAGE

3.6.1. UI LANGUAGE

UI sound--[ ]
Theme--Default (this is up to you)
Color Tint--0.00
Color Saturation--1.00
UI background animation--(this is up to you)
Enable compatibility sever reports--[ ]

3.6.2. EMULATION

Fast memory (unstable)--[+]
Ignore bad memory accesses--[+]
I/0 on thread (experimental)--Fast )lag on slow storage)
I/0 timing method--Fast (lag on slow storage)
Force real clock sync (slower,less lag)--[ ]
Change emulated PSP's CPU clock (unstable)--Auto older PPSSPP
Rewind snapshot frequency (mem hog)--Off older PPSSPP
Memory Stick inserted--[+]
Change Memory Stick size (GB)--16

3.6.3. GENERAL

Check for new versions of PPSSPP--[+]
Set UI background...
Savestate slot backups--[+]
Auto load savestate--Off
Use system native keyboard--[+]
Save path in My Documents--[ ]
Save path in installed.txt--[ ]
Cache full ISO in RAM--[ ]

3.6.4. CHEATS (EXPERIMENTAL, SEE FORUMS)

Enable cheats--[ ]/[+] (this is up to you)

3.6.5. PSP SETTINGS

PSP model--PSP-2000/3000
Change nickname PPSSPP
Save screenshots in PNG format--[ ]
Record display--[ ]
Use lossless video codec (FFV1)--[ ]
Use output buffer (with overlay) for recording--[ ]
Record audio--[ ]
Reset recording on Save/Load state--[ ]
Date format--YYYYMMDD
Time format--24HR
Confirmation button--Use X as confirmation button

Now that you have the settings let's make steam play Persona 1.

4. 4. Playing Steam (ISO)

Making Persona 1 play on Steam is crazy easy, (My message from the SMT Modding Discord)
"Games that are not an exe (Like Iso) can be played by: adding the emulator exe then, going in 'Properties," Target, the target address by default is "C/randomfolder/randomfolder/emulator" adding "C/randomefolder/Persona1.iso" will run the game, so "C/randomfolder/randomfolder/emulator C/randomefolder/Persona1.iso". (There's an space when adding the game address)
Here is: Backgrounds, Exe icon, and Logo image,
"https://cdn.discordapp.com/attachments/892812740861763655/907178063647883274/Backgroundsforpersona1pspsteam.7z"
Right clicking the background will let you add a "Custom background and Logo" and, clicking the exe icon in "properties," Switching the "File type" to PNG will let you select any PNG for it.

5. 5.Modding it

First install the modded eboot's (The music patch has one in it so don't replace that one.)
USA, JP, PAL
PSP music version of Persona 1 only.

Extract the iso with UMDGEN or 7zip 64bit or 32bit and install it,

Download a mod read the readme and install that where it needs to go.

I have tutorials plus other people for making mods for Persona.
Sound modding Make and replace AT3 music files plus mono
Texture modding Make textures for Persona 1
Video modding Make and replace PMF video files

Plus useful tools for modding Persona 1 too.
Bin extract Extracts the BIn's plus repacks them
AT3 workspace tools Very useful for making AT3 music files plus AT3 mono music files too

6. 6.Unpacked

A better way of playing it modded is with extracting the iso as PPSSPP can load a extracted version of the iso making it easy to play modded but steam will not load it. To play Persona 1 unpacked is using UMDgen 7zip or PowerISO. to do it with UMDgen is opening the iso and selecting "PSP_GAME" and "UMD_DATA.BIN" after that put them in a folder and name it anything, same with powerISO but 7zip will make a folder for you. The best way to tell if it's you unpacked game is editing the icon1 picture with "Unpacked" text in photoshop. Now paste the the folder to "ppsspp_win\memstick\PSP\GAME\Shin Megami Tensei - Persona (USA) unpacked" now drag the folder into PPSSPP. and your done.