About This File
This application is used for modders to be able to rebuild .bsp to .map encase the modder accidentally lost his/her .map file or just simply want to be hardcore and edit map made by someone else. In that case remember you will need to add the content of etmain from the pk3 as if it was etmain to the q3map2 folder for textures and entities to rebuild. Simple enough you maybe have to try more then once to get a handle of it.
This tool is only usable in DOS mode you will need to read the howtodecompile.txt that I added to the file to work it. This file goes directly in your main Drive letter if it's C : then extract/place it there unless you modify the path to a different directory please read the howto. You will also need to add the file .bsp to the folder to decompile it to a map.
As example in Pak0.pk3/maps folder you see battery.bsp copy it to the q3map2 folder it will create a converted map file with name battery_converted.bsp
You can find other useful methods in Wikibooks just reverse engineer the path https://en.wikibooks.org/wiki/Q3Map2
This is no longer knowledgeable online you will only find it here there is no version number because this is a DOS program for Windows
For the eager beaver who can't wait here's the how to
Do mine the cd C:\ you need to make it point to the directory you sent the q3map2 to
cd C:\q3map2
Then type and hit enter the following below
q3map2.exe -game et -convert -format map nameof.bsp
This works on Windows 32bit and 64bit there no need for a q3map2 4gb extension to decompile