PIGI,
update file is named "Analog_Factory_2_2_1_Setup.exe", so you don't need to uncompress the file.
procedure would be:
1. download the update file,
2. you may run a virus scan if you want at this point,
3. double click the download file and start it
4. installation may take a few to several minutes.
I needed to uninstall 2.0 when I tried 2.2, but the latest one - 2.2.1 - seems to work
without uninstalling a previous installation.
hope this helps.