Back up your current device configuration using the command: show configuration | display set Use code with caution.
Ensure you have enough local storage to download the .tgz image package, which is typically between 120MB and 180MB. Step-by-Step: How to Download Juniper EX2200 Firmware juniper ex2200 firmware download
Do you have access to an account?
Always run request system storage cleanup before attempting an installation to prevent storage faults. Back up your current device configuration using the
jinstall-ex-2200-12.3R12-S21-domestic-signed.tgx (or .tgz ) juniper ex2200 firmware download
Run show configuration | save /var/tmp/config.conf to backup your current settings.