If individual service instance upgrades are permitted by the operator, and a newer tile has been made available, then developers may upgrade their own service instances by following the procedure here. Enable Individual Service Instance Upgrades describes how an operator enables developer upgrades of their own service instances.
The cf CLI, v6.46.0 or a more recent version, is a prerequisite for upgrading a VMware Tanzu GemFire for VMs service instance.
To upgrade a single GemFire for VMs service instance:
upgrade availablecolumn of the output says
yes, as in the sample output:
$ cf services Getting services in org system / space system as admin... name service plan last operation broker upgrade available testSI p-cloudcache small-footprint create succeeded cloudcache-broker yes
cf update-service SERVICE-INSTANCE-NAME --upgrade
SERVICE-INSTANCE-NAME with the name of the instance to be upgraded. Confirm that you want to update when prompted.