Updating hacked psp firmware
Hacking a Play Station Portable (PSP) with Chick HEN and custom firmware allows the user to run homebrew games downloaded from the internet.
This also allows users to back up UMD discs as ISO/CSO images and download them directly to the memory stick.
If your PSP firmware version is below 5.03 you need to update it to firmware 5.03 first. Your PSP memory stick will appear in your computer. Assuming that your PSP is on Firmware 5.03, now is the time to load chick HEN R2. Copy file from Chick HENR2 folder to the root of your PSP.
One of the drawbacks of downgrading the PSP is that new legitimate media may require the presence of a new firmware edition.
A hacker by the name of Dark Alex had released a custom firmware called "Dark Alex's Open Edition firmware" which opens the firmware but allows users to use the existing feature set of the current edition.
Hackers refused to apply updates which would render their hacks unusable so Sony attempted to convince users that there was a benefit to upgrading by including new features in the firmware updates, such as a web browser, and not just security patches to plug the vulnerabilities.
Business Week dubbed this the "carrot-and-stick" approach. Users attempting to downgrade their PSP using this software instead found that is was rendered inoperable as this software deleted important system files.