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Revert Junos on a Switch to a Previous Version

Follow these steps to revert to a previous version of Junos.

For EX4000 Series, EX4100 Series, and EX4400 Series switches, you can revert the version of Junos running on a standalone switch or Virtual Chassis device to the previous version stored on the device. Both the current and previous Junos versions must support Cloud X. In addition, the following conditions apply:

  • All devices selected for the revert operation, whether standalone switches or members in a Virtual Chassis device, must support rollback.

  • Each device selected for the revert operation must have a backup Junos version that matches the others.

To revert a switch to a previous version of Junos:

  1. Click Switches to go to the list of switches.
  2. Select the switch which you want to revert to a previous version of Junos and then click Upgrade Firmware.
    The Upgrade Switch Firmware window appears.
  3. On the Upgrade Switch Firmware page, click Revert to Previous Running Version.
    Note: The Revert to Previous Running Version option is available only for EX4000, EX4100, and EX4400 Series switches.
  4. Click Start to begin the rollback.