To update the Alice POS installation -
Open a web window and go to files.alicepos.com/install.exe to download the new installation file. Go to your downloads folder and copy the installation file.
Go to the Alice POS installation folder C:\Program Files (x86)\Secondary Effects\Alice and paste the installation file. You should get a popup asking if you want to replace the file, click yes.
Once the file has been replaced, open the installation file with administrator rights and proceed with the installation.