After a long time of hunting for this links,finally found it!
As you saw the l2net downloader doesn't downloading the files correctly, and the old links that have posted here don't work.
Here you can download the parts manually, latest version of the program.
This version tested on few servers tonight, working great!
How to install the program:
Extract l2net386 wherever you want.
Extract DataFiles386, and copy the files to l2net386 main folder.
Extract MapFiles386, copy Maps Folder into l2net386 main folder.
Then go to Data folder(MapsFiles386), and copy the file "Maps" to Data Folder in l2net386.
(DON'T REPLACE DATA FOLDER, ONLY COPY PASTE THE FILE "MAPS" FROM DATA FOLDER MAPFILES TO DATA FODER L2NET)
Run l2net.exe, firewall request-unblock, and have fun.
You can find easy and fast guide here how to use the program:
Links for download:
RapidShare:
L2Net 3.8.6
Data Pack 3.8.6
Map Pack 3.8.6
DepositFiles:
L2Net 3.8.6
Data Pack 3.8.6
Map Pack 3.8.6