Developed primarily by the community (with notable recent updates from "Regen"), the 3.4.2 build focuses on refining the survival experience. While it isn't an official Mojang release, it’s one of the most stable and feature-rich versions available for the PSP. Mob Density Tweaks:
Below is a draft for a community post or download description for this version:
Performance optimizations allowing 30–60 FPS on original hardware. Support for survival and creative game modes. Installation & Requirements To run this version, your PSP must have Custom Firmware (CFW) installed. Hardware Compatibility PSP 2000/3000/Go : Runs with full sound and features. PSP 1000 (Fat) : Limited by RAM; it is recommended to set available RAM to 32 megabytes