3.55펌웨어 다운그레이드 가능합니다.
카카로트 다운그레드 성공한 것을 기억하지 않는다.
동글이 없이 사용이가능하다.
최신 슬림PS3는 벽돌가능성이 있다고 합니다.
http://psgroove.com/content.php?644-Successful-3.55-to-3.41-Downgrade-Method-Released
It confirmed the downgrade 3.55 to 3.41 is possible that only PS3 FAT. The same downgrade on the PS3 Slim Briker immediately. KaKaRoTo's already successful, but does not remember the method. That's when Solidpsycho comes into play, to reveal its functional method. PUP file modified firmware 3.41 is available and it works without a dongle.
The bad news is for owners of the slim. A test downgrade your slim brick permanently. Only the PS3 can be downgraded in FAT 3.41. After the downgrade, the console will think you are in 3.56, then downgrade to 3.41 is possible. I recall: