Installing an Earlier Version of Junos OS on SRX Series Services Gateways

• Installing Junos OS Release 9.6 or Earlier Release on SRX Series Services Gateways with Dual-Root Partitioning
• Reinstalling the Single-Root Partition Release Using TFTP on SRX Series Services Gateways
• Reinstalling the Single-Root Partition Release Using a USB on SRX Series Services Gateways

Installing Junos OS Release 9.6 or Earlier Release on SRX Series Services Gateways with Dual-Root Partitioning

Junos OSRelease 9.6 and earlier is not compatible with the dual-root partitioning scheme. These releases can only be installed if the media is reformatted with single-root partitioning. Any attempt to install Junos OS Release 9.6 or earlier on a device with dual-root partitioning without reformatting the media will fail with an error. You must install the Junos OS Release 9.6 or earlier image from the boot loader using a TFTP server or USB storage device.

Note: You cannot install a Junos OS Release 9.6 or earlier package on a system with dual-root partitioning using the Junos OS CLI or J-Web. An error will be returned if this is attempted.

Note: You do not need to reinstall the earlier version of the boot loader.

Reinstalling the Single-Root Partition Release Using TFTP on SRX Series Services Gateways

See the Installing Junos OS on the SRX Series Services Gateways from the TFTP Server for detailed information on installing Junos OS using a TFTP server.

Reinstalling the Single-Root Partition Release Using a USB on SRX Series Services Gateways

See the Installing Software from the Boot Loader Using a USB Storage Device on SRX Series Services Gateways for detailed information on installing Junos OS using a USB.