8.2.6>8.2.7.1>>8.2.9.1>8.2.10.1.>> Take backup of 8.2.10.1and do fresh install of 8.2.10.1 and restore backup >> upgrade to 8.2.11.0.
Centos migrated to 7 in version 8.2.10. To upgrade to latest code, you have to upgrade server to either 8.2.10 or 8.2.10.1, take backup and do a fresh install and restore same backup and upgrade to latest 8.2.11.0 code.
Note: 8.2.11.0 supports only Centos7 .
To check centos version from AMPCLI run command $crr
Type 'help' for the list of commands.
$ crr
CentOS Linux release 7.7.1908 (Core)