Here's the link, below, to the uninstall procedure. Please follow it to the letter and you will have success at uninstalling the UAD-2 software and reverting to an earlier firmware on the Apollo. There may be some files in your Library that are not present and you can't find, do not worry about it, as long as they are NOT there all will be fine.
Also, please note that there are two Libraries in OS X. One is in the User Account Startup Disk/Users/username/Library/ and the other one is under Startup Disk/System/Library/. Apple has hidden the system Library from Lion and Mountain Lion. Please follow these steps to show your Library:
How to Reveal Your Library Folder in Lion or Mountain Lion ? Tuts+ Tutorials
Note: In step 7 of the uninstall procedure, when it says to now install the latest software, proceed to install UAD v7.0.1 instead (which is proving to be the most stable for those who have issues beyond 7.3). This will force the Apollo to downgrade the firmware to an earlier version. From there one can probably install v7.2 (Pultec MkII) without any issues.
It is important to understand that UAD-2 software versions 7.3, 7.3b and 7.4 all have new Apollo firmware within them, so do not install them until UA provides a fix for this situation.
Complete Uninstall/Reinstall (Mac)
UAD v7.0.1 Mac zip
Also, please note that there are two Libraries in OS X. One is in the User Account Startup Disk/Users/username/Library/ and the other one is under Startup Disk/System/Library/. Apple has hidden the system Library from Lion and Mountain Lion. Please follow these steps to show your Library:
How to Reveal Your Library Folder in Lion or Mountain Lion ? Tuts+ Tutorials
Note: In step 7 of the uninstall procedure, when it says to now install the latest software, proceed to install UAD v7.0.1 instead (which is proving to be the most stable for those who have issues beyond 7.3). This will force the Apollo to downgrade the firmware to an earlier version. From there one can probably install v7.2 (Pultec MkII) without any issues.
It is important to understand that UAD-2 software versions 7.3, 7.3b and 7.4 all have new Apollo firmware within them, so do not install them until UA provides a fix for this situation.
Complete Uninstall/Reinstall (Mac)
UAD v7.0.1 Mac zip
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