Downgrade PSP(old fat version) from 2.71se-b' to 1.5

[bignoob]

Hi Guys,

I have been trying for the past few weeks to downgrade my psp 2.71se-b' version to 1.5 but I cant seem to do this through the recovery menu(power+r) I think this might be due to the folder structure on my psp and it possibly being messed up. Is there anyone that can help me get the original folder structure back or help me downgrade back to version 1.5 so I can upgrade to a normal firmare( or maybe go up to 6.XX if I can get anywhere with this problem).

Any help will be appreciated, (even helping me find a thread that has this I have searched but have failed )

Thanks,

psp struggler

[bignoob]

can anyone help Ive still not had any luck?

[bignoob]

When I do the downgrade via the recovery menu I still get an error message popping up saying The game could not be started 80010002. and no change in firmware