This is really great news for PSP owners who has firmware 5.50 including me. As you know davee and team Typhoon has released HEN for firmware 5.03 and unfortunately I have already installed firmware 5.50. Okay talking about tiff exploit, these are videos of how the tiff exploit is found. Check this out
Actually, I have never tried homebrew app indeed. I just want to feel using it on my PSP 3000 and it must be really great if I can. Hope davee and team typhoon can make it come true. 
You know so many interesting infomation. You might be very wise. I like such people. Don’t top writing.
Where did you take from such kind of information? Can you give me the source?
http://www.deerawan.com – da best. Keep it going!
Thanks