Transfer the downloaded file to the device's /var/tmp/ directory using SFTP/SCP.
To download official firmware, you must use the official portal. juniper firmware downloads
Modern Junos images are cryptographically signed. The device's secure boot process and the OS installer validate this signature against an internal public key infrastructure (PKI). If the signature is invalid, the device will refuse to install the image. This mechanism prevents the installation of unauthorized or modified OS images, effectively locking out malicious firmware injections at the hardware level. Transfer the downloaded file to the device's /var/tmp/
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The device's secure boot process and the OS
Transfer firmware to device
: Search for your specific device model (e.g., SRX, EX, or MX series).