How to update Junos on an EX series Juniper Switch via USB (standalone device)
- USB 2.0 (or later) Flash Drive formatted as FAT or MS-DOW
- Latest JunOS (9.6 or later) firmware for your device
Move the Junos firmware file to the root folder of the USB drive.
Console into the Juniper device and enter shell as root by typing start shell user root and enter the admin password for the Switch
Mount the USB device by typing the command mount_msdosfs /dev/da1s1 /mt
Enter CLI on the Junos device by typing cli
Enter command request system software add /mnt/>image name "jinstall-exe-4200-10.0S10.1-domestic-signed.tgz"
Reboot the EX switch by typing request system reboot
After the reboot, log back in and verify the new Junos version by typing the command show version