You cannot install Adobe Flash Player on a PSP 3000. It's technically impossible and officially unsupported.
/VIDEO folder on Memory Stick.Convert your library on PC → transfer via USB → watch offline. No internet, no Flash, no DRM, no lag. The PSP's 4.3" 480x272 screen is still great for 4:3/16:9 content at native resolution.
Avoid unauthorized software—protect your device, your data, and your warranty.