Homebrew coder Light_AleX has released a new update for PSN License Manager. Version 0.22 is a bug fix release.

PSN License Manager:

Capabilities
Backup your PSN license.
Restore your PSN license.
Delete the backup license on the memory stick.
Toggle USB Mass Storage.
Up to 30 PSP support.

Licenses can only be used on ONE PSP so don't think this is a piracy helper.

TESTED ON 5.00M33-6
LEDA Installed.
For PSP-100X and 200X, 1.50 kernel installation is fine too.

Custom flashed themes may interfere with this program as it loads resources from flash. Please use CTF themes or uninstall your Flashed themes.

Please read readme before installing and use at your own risk.
Information of each function is not in the main program anymore so you MUST read the readme before using the program.