I have tried but something goes wrong. I have taken the TN sources and some piece of code for compile a "dumper" (from vitadevwiki and others threads here), but it crash, and the emulator stop when i run it (with error C-something). I'm pretty sure i have done some shit inside the code. In fact i dunno exactly what is going wrong, because i've tried last friday with some help coming from irc but i don't know so much about the PSP. I used it to play some homebrew instead of coding them for now. Anyway, i don't own any kernel exploit. I use UNO for now, but as somebody tell to me friday, to have a valid flash dump you have to run the "dumper" before TN, because it corrupt original the flash0.
So... there is nothing more to do ^^ Or ask for the source to the author.. but as i said i have not so much knowledge in psp hw/programming, so i prefer just wait instead of ask again and again how things work on psp. As a dev i'm pretty busy with some projects and i have not the time and the motivation to learn more..I can learn with google, but others projects and the life take almost everything.
People was cool on irc btw. thx to Z80, Xerpi, and some others who helped me to do my testing. I will wait... maybe we will have the media engine sound one day, or better, native homebrew. It's just question of time.
I prefer make some demos/intros using the graphics API (OpenGL mainly), instead of trying to dump the flash0 for now
I make demos/intros since some years now, and that's fun for me, but i do not like to spend so much time into hacking.
If you guys know how to program, maybe you like games, or management apps, or desktop apps... you should try to hack something, to see if you like.. It's like the sudoku against the cross words..