Hello there!
The port 12212 is for MSuite. When upgrading the U2000, we need to stop it first.
Ending the Process of the MSuite Server
The MSuite server is running if /opt/oss/OSSJRE/jre_sol/bin/java -server or /opt/oss/OSSJRE/jre_linux/bin/java -server is displayed. If the MSuite server is running, run the following commands to stop the MSuite server:
$ cd /opt/oss/engr/engineering
$ ./stopserver.sh