via http://www.aep-emu.de/

PPSSPP is a Open Source PSP Emulator for Windows, Android, Linux, MacOSX and Blackberry.

Quote:
February 15, 2014: 0.9.7.1 - minor bugfix release

An annoying rotation lock bug slipped through, and haptic feedback was broken. Both have been fixed

Changelog:

  • Fixed rotation and vibration bugs