Upgrade Junos OS Software on a vSRX Instance
This section outlines how to upgrade Junos OS software on your vSRX instance to a newer release. Depending upon your preference, you can replace the vSRX software in one of two ways:
Upgrade the Junos OS for vSRX Software Release
You can directly upgrade the Junos OS for vSRX software using the CLI. Upgrading or downgrading Junos OS can take several hours, depending on the size and configuration of the network. You download the desired Junos OS Release for vSRX .tgz file from the Juniper Networks website.
You also can upgrade using J-Web (see J-Web) or the Junos Space Network Management Platform (see Junos Space).
For the procedure on upgrading a specific Junos OS for vSRX software release, see the Migration, Upgrade, and Downgrade Instructions topic in the release-specific vSRX Release Notes available on the vSRX TechLibrary.
Replace the vSRX Instance on AWS
To replace a vSRX instance on AWS with a different software release: