Very sad news that the PSP's greatest hacker has retired. Honestly, I don't know the legalities of hacking a firmware. But I think the guy made the right decision and for us users of his creation, it would be very nice to bid him good bye. Thank you Dark_AleX! Though I have used your software for only a short time it really brought gaming for me into a higher level. Thanks!
http://psp-news.dcemu.co.uk/-psp-dark_alex-leaving-scene--67515.html