This is a common pain point. Official policy:
These are the "Gold Standard" releases. Juniper engineering has designated these builds as the most stable and feature-complete for general deployment. They have undergone extended testing and usually contain fixes for a wide array of known issues. juniper firmware download
Most software downloads require a valid support contract or are limited to a 90-day software warranty period. This is a common pain point
Finally, test your core network functions (e.g., ping an external IP, pass traffic between VLANs, establish BGP peers). test your core network functions (e.g.
Used for creating bootable USB recovery drives.