PsNee Region Free Installation (PS1)

the psnee is a mod chip for the playstation 1 to bypass the cd protection to play any region games use an arduino nano/mini or attiny85 you can source these chips on digikey, ebay or aliexpress i recommend an arduino pro mini you program the chips using the arduino ide i will show you how to configure several boards such as the attiny85, arduino nano and arduino pro mini (my personal choice) note i do not recommend the attiny85 as i have had issues where it just doesn't work for example, in a scph 7502 pu 22 even though it should, it doesn't swapping it out for an arduino nano / pro mini worked immediately start by installing arduino ide install attinycore (attiny85) if you are going to use an attiny85 then install the following open arduino ide file > preferences enter http //drazzy com/package drazzy com index json http //drazzy com/package drazzy com index json in additional boards manager urls and click ok go to tools > boards > boards manager select attinycore by spence konde and click install open psnee project download the psnee arduino code open up this file in arduino ide program arduino uno as isp we are going to use an arduino uno as the programmer to program the attiny85/nano/pro mini connect an uno to the pc and open the ardiono ide select file > examples > 11 arduino isp > arduinoisp upload sketch this will turn your uno into a programmer now in arduino select this uno as the programmer tools > programmer > arduino as isp selecting nano/pro mini/attiny85 board if using arduino pro mini, in arduino ide tools > board > arduino avr boards > arduino pro or pro mini if using arduino nano, in arduino ide tools > board > arduino avr boards > arduino nano if using attiny85, in arduino ide tools > board > attiny 25/45/85 (no bootloader) chip is set to attiny85 clock source is 8 mhz (internal) everything else default, or matches this screenshot connecting arduino to uno connect up the pro mini to the uno programming pins as follows connect up the nano to the uno programming pins as follows connect up the attiny85 pins to the uno pins as follows arduino attiny 5v vcc (physical pin 8) gnd gnd (physical pin 4) pin 13 pin 2 (physical pin 7) pin 12 pin 1 (physical pin 6) pin 11 pin 0 (physical pin 5) pin 10 reset (physical pin 1 program with psnee with all the settings done, scroll down in the psnee code until you see the defines for selecting your board if you are using arduino nano/pro mini , uncomment the #define arduino 328 board if you are using attiny85 , uncomment the #define attiny x5 now simply compile and upload the sketch using sketch > upload using programmer do not upload it using the upload button this will program the uno not the nano/pro mini/attiny use sketch > upload using programmer make sure you see it writing, as it will finish even if it fails observe that you see the erase and write along with success message installation once you have your nano/pro mini/attiny85 programmed and ready to go, i would follow the official github guide for the steps follow the install pdf here https //archbee doc uploads s3 amazonaws com/j28kvka0c jxcfzcoqq29 wu4rcqueet78 wxdq03vh 20241017 090237 pdf you only need to solder vcc to 3 3v psnee data, subq, sqck and gate wfck bios a18 and d2 (if using nano/pro mini and want bios patch) pins 1 and 2 on the attiny85 are not connected, but the rest are