Uninstall versions prior to 2.8.5

(Standalone upgrade only) Uninstall the 

BlackBerry AtHoc

 management system if you are upgrading and plan to use the standalone mode:

Run the 
BlackBerry AtHoc
 management system uninstall program.
Uninstall the 
BlackBerry AtHoc
 management system application and database servers.
Ensure all of the databases except 
ngdelivery
 are removed. If not, delete them manually.
Delete all the stored procedures related to BlackBerry AtHoc in 
system > MSDB.
Delete the ngad user.
Reboot the server.
Delete the following folders in 
AtHocENS
 directory:
\CommonSiteData
\Logs
\ServerObjects
\wwwroot
Uninstall 
NDS
:
Undeploy GAC
Navigate to the following directory: 
C:\Program Files (x86)\AtHocENS\DeliveryServer\Installations\2_DeployGAC
Right-click on the 
undeployGAC.bat
 file and select 
Run as Administrator
.
Remove Application Pools:
Open IIS and go to 
IIS
 > 
Default site
.
In the 
Application pools
 remove 
AtHocDeliveryServerEndpoint
 and 
AtHoc. NDS.Uap
 (for 
NDS
 V2.8.3 or higher).
In 
IIS
, delete all applications under 
Default Web Site
.
Remove the 
NDS
 configuration for the 
AtHocProcessor
 service:
Navigate to the 
AtHocENS/ServerObjects/Process
 directory.
Open the 
AtHocProcessor.config
 file.
Remove the 
DeliveryServer masterThread
 section, as shown in the following image: 

Save your changes.
Uninstall plug-ins:
Stop all plug-in-related services, such as 
AtHocTelephonyservice
.
Uninstall the 
TAS
 plug-in.
Navigate to the following directory: 
AtHocENS\DeliveryServer\Plugins\AtHocTelephonyservice
.
Right-click on 
undeploy.bat
 and run as administrator.
Take a backup of the ATS registry.
Navigate to 
AtHocENS\DeliveryServer
, and delete the 
Plugins
 directory.
Remove the 
AtHocENS
 folder.
Reboot the server.