The PS2 90000 blocks the exploits that allow you to run burned games. To the best of my knowledge, no one has cracked it.
The 90000 only blocks the memory card/freeMCboot type exploits, using Swap Magic and something to block the lid sensor still works just fine, though you need SM version 3.6 or 3.8, not earlier versions.
He says he's played other backups/translations on it before.
I tried a few burned games on my friend's system using Free McBoot and I wasn't able to get any of them to work. Now I'm curious to know what games do work, or what method was used to get them to work.
I have indeed, but again not freeMCboot. Every game I've tried other than DQ5 works. I've played the translated Phantasy Star 1 remake (not to be confused with the Phantasy Star collection, this is a full remake for the PS2) for instance.
I played thru it on my PS2 without any problem. It's model is SCPH-77004
Yeah, that's an older slim model, not the model I'm having problems with. They didn't completely change the appearance for the last type of PS2 the way they did with PS3 super slims, so it's easy to mix them up.
(I don't mean to come off as dismissive of your post if it seems that way, it's still good to have another data point of a system model that runs it).