For those coming because of the instant mission failed on level 21, or the black screen after the final boss and credits, neither issue is present on PPSSPP 0.9.8.
The mission 21 bit is a cutscene and after it you need not stay on 0.9.8 unless you want to beat the final boss a few times.
Just download an older version on this site and you'll be good to go until it's fixed.
The mission 21 bit is a cutscene and after it you need not stay on 0.9.8 unless you want to beat the final boss a few times.
Just download an older version on this site and you'll be good to go until it's fixed.

