Had a Raspberry Pi Pico laying around after using it for RGH 3.0 on my Xbox 360 and needed to figure out what is causing YLOD on my PS3. So I figured it'd be best to reuse it instead of buying a $5 device with worse usage.
After poking around in the PS3 syscon reader source code, I eventually figured out it is written in Python and uses UART (this is never stated explicitly - just that a "TTL serial USB" device is needed). I was planning on creating a custom solution for the Raspberry Pi Pico, but couldn't really figure out how to interface the UART serial to USB then to syscon reader.
Searched for "raspberry pi pico uart usb" and in the first 10 results, I saw that someone had already made a UART-USB solution for the Raspberry Pi Pico. This is the best approach since it doesn't require any custom software.
Using the pinout in Pico USB-UART Bridge's GitHub repository, I wired up UART0 to the PS3 syscon. Pico UART0 TX to syscon RX, Pico UART0 RX to syscon TX. For some reason, it didn't work at all and syscon reader was throwing out "Auth1 response invalid" with both "AUTH" and "auth". I even added a ground wire and it still didn't work! As a last resort, I switched the wires around (following the guide).
At this point, I can read syscon and figure out why my console has YLOD.
Since my board is a DIA-001 model, I was able to get into internal access mode. Not exactly sure how this helps, but it seems to give a bit more extra info.
Notes:
DO NOT BLINDLY TYPE IN WHATEVER COMMANDS I USED (IN THE SCREENSHOTS) TO OBTAIN INTERNAL ACCESS MODE! THIS CAN AND WILL BRICK SYSCON.
I used the "Linux" version of ps3syscon on Windows 10 since it just relies on Python 3. The Windows version looked like a packaged version of Python with a user-friendly UI and has no real merits (other than being user-friendly) over the CLI version, in my opinion.
Sources:
https://github.com/Noltari/pico-uart-bridge
https://github.com/db260179/ps3syscon
https://www.psx-place.com/threads/r...s-replacement-ylod.25260/page-192#post-295119
By the way, although I can't confirm this, I'm sure Pico UART-USB Bridge will work for PSP BaryonSweeper.
After poking around in the PS3 syscon reader source code, I eventually figured out it is written in Python and uses UART (this is never stated explicitly - just that a "TTL serial USB" device is needed). I was planning on creating a custom solution for the Raspberry Pi Pico, but couldn't really figure out how to interface the UART serial to USB then to syscon reader.
Searched for "raspberry pi pico uart usb" and in the first 10 results, I saw that someone had already made a UART-USB solution for the Raspberry Pi Pico. This is the best approach since it doesn't require any custom software.
Using the pinout in Pico USB-UART Bridge's GitHub repository, I wired up UART0 to the PS3 syscon. Pico UART0 TX to syscon RX, Pico UART0 RX to syscon TX. For some reason, it didn't work at all and syscon reader was throwing out "Auth1 response invalid" with both "AUTH" and "auth". I even added a ground wire and it still didn't work! As a last resort, I switched the wires around (following the guide).
"AUTH" still didn't work, but "auth" worked and I got an "Auth successful" message.
At this point, I can read syscon and figure out why my console has YLOD.
Since my board is a DIA-001 model, I was able to get into internal access mode. Not exactly sure how this helps, but it seems to give a bit more extra info.
Notes:
DO NOT BLINDLY TYPE IN WHATEVER COMMANDS I USED (IN THE SCREENSHOTS) TO OBTAIN INTERNAL ACCESS MODE! THIS CAN AND WILL BRICK SYSCON.
I used the "Linux" version of ps3syscon on Windows 10 since it just relies on Python 3. The Windows version looked like a packaged version of Python with a user-friendly UI and has no real merits (other than being user-friendly) over the CLI version, in my opinion.
Sources:
https://github.com/Noltari/pico-uart-bridge
https://github.com/db260179/ps3syscon
https://www.psx-place.com/threads/r...s-replacement-ylod.25260/page-192#post-295119
By the way, although I can't confirm this, I'm sure Pico UART-USB Bridge will work for PSP BaryonSweeper.
