In case someone is struggling like me with the syscon glitch for days, I would like to inform you that all you have to do is use the right MOSFET, and then it will unlock the system in less than a minute. If you use the wrong one, it will never...
yep, I added support for RL78/G23 protocol, used its new feature "disable debug interface", and wasn't able to enable it back. It's disabled really well.
Though It's not confirmed yet that new Syscon uses RL78/G23 series (in progress)
Any mosfet is safe, some just won't be enough to glitch. They like high voltage on the gate, while pico has only 3.3v.
I used the irfhs8242 which are popular here for usage in nintendo switch mods. Although if you cut power trace between pins...