ok i modded a second ps2 with green laser and the chip still not running. ps1/ps2 CD/DVD Originals and dvd videos running. ps1/ps2 CD/DVD same Region backups don't. also the ps1 mode doesn't work.
i heard that the media detetion needs a little bit longer than the orange laser. so maybe its a little timing problem.
so when the little chip is an eeprom it should be possible to change the chips on board and then the board with the green laser can operate the orange laser ?