1) Exit from SORO Nigeria if using it. 2) Unzip the supplied file SORO_NIGERIA_V1V25_UPGRADE.zip to a location on your computer e.g "C:\Temp" folder. 3) Double click on the file named "Double Click Me to Install SORO Nigeria Ver 251 Upgrade.EXE" to install the upgrade. 4) Start using SORO NIGERIA again. Note: email TalkaSoft using our support email address support@talkasoft.com for any issues or call us on +617 3376 1251