I can provide a tailored list of the for your specific model.
: A Memory Stick Duo (preferably over 2GB) is required. 2. Download and File Preparation
Before downloading and installing the Pro Update PSP 6.61, make sure to backup your PSP data and ensure that your PSP is compatible with the update.
A black screen with text will appear. Press to install the firmware. Once finished, press X again to boot into the CFW. 4. Verify Installation
📌 Homebrew & ISO/CSO go in /ISO/ on root of memory card.
Here’s the quick download & install process: