ArjunKiller
Gamer
You will need to downgrade the firmware but that is not possible right now because 6.60 doesn't have any CFW or LCFW right now.
Ishu Gupta
Manchester United
I think there IS a 6.60 ME CFW but you'll have to google for yourself. This isn't allowed here.
nims11
BIOS Terminator
^^ that's for those who have currently hackable firmware.
to use a CFW, first you need to downgrade your 6.60 to something lower.
PSP Firmware 6.60 Downgrader Released | PSP Hacks · PSP Go Hacks · PSP Homebrew, PSP Downloads, PSP Custom Firmware
then just use a 6.60 PRO-B installer
PSP Downloads | PSP CFW 6.60 PRO-B9 (fix1)
to get a CFW.
then google and get a GBA emulator for PSP.
UPDATE : the new 6.60 LCFW is out which requires no downgrading. LCFW 6.20/6.35/6.39/6.60 Pro B9 Released , PSP Hacks - PSP Slim Hacks
to use a CFW, first you need to downgrade your 6.60 to something lower.
PSP Firmware 6.60 Downgrader Released | PSP Hacks · PSP Go Hacks · PSP Homebrew, PSP Downloads, PSP Custom Firmware
then just use a 6.60 PRO-B installer
PSP Downloads | PSP CFW 6.60 PRO-B9 (fix1)
to get a CFW.
then google and get a GBA emulator for PSP.
UPDATE : the new 6.60 LCFW is out which requires no downgrading. LCFW 6.20/6.35/6.39/6.60 Pro B9 Released , PSP Hacks - PSP Slim Hacks