Use the filters:

To download firmware for Juniper Networks devices, users must typically have an active support contract or be within the initial warranty period for their hardware . Downloads are managed through the official Juniper Support Portal

Downloading Juniper firmware requires an active support contract and a registered account. The primary hub for all legitimate firmware and software packages is the Juniper Support Downloads Page Essential Resources for Firmware Downloads Official Download Portal

Once logged in, hover over the tab or look for the "Downloads" section directly on the dashboard. You will see a sub-menu allowing you to search by product.

Juniper has improved its portal significantly over the last five years, but the process still requires patience and a valid support agreement. If you manage more than five Juniper boxes, designate one engineer to be the "Firmware Custodian" who tracks CVEs and downloads new releases monthly.

The process of downloading this firmware is not merely a logistical step; it is a critical security vector. A compromised firmware image can grant an attacker persistent, undetectable control over a network. Therefore, understanding the lifecycle, acquisition channels, and verification methods for Juniper firmware is essential for cybersecurity professionals.