NOTE: Please be sure to backup whole project including database before upgrading ACEN to the latest version
 

STEP 0:  Before installing latest build be sure to uninstall old ACEN files from your local computer (by default these are installed in '\Program files' subfolder) by running ACEN uninstall application.
 

STEP 1: Identify your existing activation center version (version information is available in admin dashboard)
 

STEP 2: Identify required database upgrade scripts. 

All SQL scripts are located in /database sub-folder. All scripts are named accordingly to ACEN version.

For example, upgrade script for upgrading database from 3.10.00 to 3.20.00 version is named: 3.10.00-3.20.00.sql

You need to run upgrade scripts on your acen database, one by one, starting from the oldest one.
 

STEP 3: Preserve original acen.config (/conf directory).
 

STEP 4: Delete previous version of ACEN and install new update (copy folders from latest acen installation folder).
 

STEP 5: Restore original /conf/acen.config file.
 

STEP 6: Review /help/whatsnew.txt document and make required changes (if any) to configuration files:

- /conf/acen.config (usually required in case new options are added to this file) and

- web.config (set original culture information if you were using custom culture information and not default one)