from jas0nuk:

A few months ago I internally updated it to 2.1 fixing a few issues such as the GZ error, KL3E was added to the last public release but I'm not sure if it is still working on 5.00 as it uses a RAM search to hook the function.

Anyways here is 2.1 unofficial update with the 5.00 keys added just now, and the changelog as far as I can remember it :P

Changelog:
- Latest decryption keys (up to 5.01)
- GZIP failure bug fixed on 3.80+
- Now bruteforces the XOR key for updater modules (appears in blue at the right of the screen), takes a longer but now it will work on all future updaters until Sony change their updater security
- User is now asked whether they want to decrypt updater modules which have just been extracted
- User is now asked whether they want to overwrite files that are read-only before saving them