Update Junos on an EX series Juniper Switch via USB (standalone device)

    January 6th, 2021


    - USB 2.0 (or later) Flash Drive formatted as FAT or MS-DOW

    - Latest JunOS (9.6 or later) firmware for your device

    Step 1

    Move the Junos firmware file to the root folder of the USB drive.

    Step 2

    Console into the Juniper device and enter shell as root by typing start shell user root and enter the admin password for the Switch

    Step 3

    Mount the USB device by typing the command mount_msdosfs /dev/da1s1 /mt

    Step 4

    Enter CLI on the Junos device by typing cli

    Step 5

    Enter command request system software add /mnt/>image name "jinstall-exe-4200-10.0S10.1-domestic-signed.tgz"

    Step 6

    Reboot the EX switch by typing request system reboot

    Step 7

    After the reboot, log back in and verify the new Junos version by typing the command show version

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