After all, these ports never or rarely got used, so for them to make a good connection with PSIO requires them to be in good condition. The second problem is usually because the Parallel Port in your PlayStation is corroded or dirty.We offer a service which is that you may send in your board to have the Switch Board professionally installed by us, and we highly recommend that if you are not competent with a soldering iron that you let us do it for you. If your PSIO Cartridge refuses to boot, the first problem is because the Switch Board has been installed incorrectly or poorly.This information was adapted from this post. Note that pops_xxg.prx is marked as a system file, and may be hidden in your file manager by default. If done correctly, the extracted code should have Sony Computer Entertainment Inc at offset hex 108 and System ROM Version 4.5 at offset hex 7FF32. The BIOS file begins at hex offset 54E08 and is hex 80000 bytes (512 KB) long. Use HxD to cut out the PS1 BIOS from inside pops_xxg.prx.The file pops_xxg.prx inside the enc folder should be around 1114 KB now. Once finished, return to the XMB and connect the PSP to your computer. Launch PRX Decrypter and select 'Decrypt/decompress files', press X to confirm.Create a folder enc in the root of the Memory Stick and copy pops_xxg.prx inside it. Extract PRX Decrypter to the root of the Memory Stick.Use the VSH Menu to set 'USB device' back to 'Memory Stick'.It depends on your PSP model.) The file is around 463 KB. (The file can be named pops_01g.prx to pops_11g.prx. From the folder kd copy the file pops_xxg.prx to your PC.In the XMB, press Select to bring up the VSH Menu.PlayStation Portable with custom firmware.There are many ways of doing this, so the process will be summed up (for now?):Ĭopy /dev_flash/ps1emu/ps1_rom.bin to User Directory/bios. PlayStation 3 with access to dev_flash.The saved file should be 512KB and show up as Unknown (PSX-XBOO.ROM) in BIOS Settings > BIOS Selection.Press Ctrl+A, Ctrl+C, Ctrl+End, Ctrl+V, and Enter.

This file will not be detected by DuckStation as-is.A file named PSX-XBOO.ROM will be created in the same folder as NO$PSX.EXE.> Create nocash bios rom as raw image (PSX-XBOO.ROM). Open no$psx, click Utility > Remote Access.No$psx has a BIOS, but it isn't recommended due to potential compatibility issues.

Scph 5501