From the patcher:
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This patcher will patch the following versions of Grand Theft Auto San Andreas
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USA 1.01
USA 2.00
European 1.01
European 2.00
German 1.01
German 1.00
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This patch does NOT turn your gta-sa.exe into a crack no-cd etc, but converts you gta-sa.exe to a 1.00 EU version. Please make necessary backups incase something goes wrong, I am not responsible for damaged or lost files.
I have tested this, though please post if you have any problems while using the patcher.
Although you will be reverting back to a fully moddable version of the game, you will also lose bug fixes contained within 1.01+, so try it at your own risk. Remember you can always upgrade back to 1.01 from this patched version though. Should you experience any problems you can always reinstall.
MIRROR 1 (Bastage)
MIRROR 2 (MediaFire)
Thanks to Mike for testing and mista.maja for helping me get a german .exe, and to nippy401 for letting me get ahold of 2.00
I have added 2.0 support, for both EU and US. Both untested.
About Users of the Steam version of San Andreas
This patch is not compatible with the Steam version of San Andreas. Largely because the .exe is completely different. You can play the 1.0 version of San Andreas using a GTA SA 1.00 No CD (google it). It should contain a gta_sa.exe. Install this inside your steam installation directory for San Andreas, you shouldnt have to replace any files. You should now be able to install MTASA and use the Steam version of SA simultaneously.
EDIT: There have been numerous cases of people externally linking directly to the file. If you wish to link to the downgrader i request that you link to this TOPIC not directly to the file. This is so that if anything goes wrong they know where to post for help on it, rather than posting help in places outside of this forum. If you would like to mirror it please contact me FIRST.