well as long as you are in the 1.50 kernel you can use nirmal eboots. If you have them as kxploits then put it in game150 otherwise put a single eboot in game and set kernel to 1.50 in recovery.
u can also try psplink which gives u the ability to run the elf directly from ur pc without the need of kxploiting or copying to the psp game150 folder and u also get debug informatiion and allows u to debug ur app ,
there s a huge psplink thread on this forum right now on the first page
and good luck