miemt11 has released a patched version of MPHs Firmware Launcher, heres the info:

Version : 1.3.7u1

Change in u1 Version:

1: reduce overall eboot size by 30KB (Save some MS space)
2: L+R+START to quit emulation

I just make some patch on the MPH 1.3.7 to allow you to quit emulation with the L+R+START button and reduce eboot size by 30KB

Download here --> http://www.dcemu.co.uk/vbulletin/showthread.php?t=15565