forums.ps2dev.org

That's not magic "suppa puppa chip" that will make your PSP 1.5, once installed...
That require expencive hardware equipment (minimum 300$), great skills of using it, and good programming skills. Without that, you will not be able to attach this mod and proprly flash chip.

2 ALL:
Can someone disasm decrypted updater 2.50 to check, does is signs files from psar before putting them to flash0/flash1?
If yes, how does it exactly happens?

2 0okm0000:
Thats not possible to use decrypted unmodified prx files and only $ony have the way to encrypt them.