from README:

CFWEnabler NetUpdate Fixer 1.01 by Becus25 and Xenogears.

CFWEnabler@MHU2D.net
http://MHU2D.Net

What is?
- It is a plugin which enables the network to update older versions of CFWEnabler (3.10, 3.20, 3.30, 3.50, 3.51).
Due to change of server, you must put this plugin to work on the update network versions mentioned.
Including the 3.51 as it has detected an error that prevents network properly update in the future.

What do I need?
- A PSP (Model 2000 or 3000)
- CFWEnabler installed (3.10, 3.20, 3.30, 3.50, 3.51)

1.01 Changes:
- Fixed a bug with version 3.51.
- Improved the patching system.

How to use:
Copy the folder "seplugins" to the root of your Memory Stick and tells you whether to overwrite, overwrite

Common Errors:

- I do not work correctly --
- Make sure you copied the plugin and that either is activated.
- Make sure you have a correct version.
- Make sure that is not your Internet connection.
- In some cases, it is necessary to operate the connection retry a second time.
- Make sure you get the network update option enabled.