Juniper SRX300 Series Reference Guide

1. Identify the currently installed firmware version and new firmware version available for upgrade:
user@host > show system firmware
Part Type Tag Current Available Status
version version
FPC 1
PIC 0 MLTE_FW 1 17.2.91 OK
Routing Engine 0 RE BIOS 0 3.2 3.2 OK
Routing Engine 0 RE BIOS Backup 1 3.2 3.2 OK
a. If the Available Version field in the output does not list any information, it indicates that the device
is not running the latest jfirmware. Proceed to Step 2 to download and upgrade to the latest jfirmware.
b. If the Available Version field in the output lists the firmware version, proceed to Step 4.
2. Download the appropriate jfirmware version from
https://www.juniper.net/support/downloads/?p=junos-srx#sw:
NOTE: Ensure that the Junos OS version installed on the device is the same as the
jfirmware version or higher. To know the Junos OS version, issue the show version
command.
user@host > request system software add var/tmp/jfirmware-<version>-signed.tgz
3. Verify the new firmware version available:
user@host > show system firmware
The version is displayed under the Available Version field in the output.
4. Upgrade the firmware on the device:
user@host > request system firmware upgrade pic pic-slot <pic-slot-number> fpc-slot <fpc-slot-number>
5. Verify the successful completion of the firmware upgrade. The status should show Upgraded
Successfully.
user@host > show system firmware
6. Take the FPC offline and then bring it online:
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Juniper SRX300 Series Specifications

General

Memory	4 GB
CPU	Intel Atom
Storage	8 GB
Operating Temperature	32°F to 104°F (0°C to 40°C)
Humidity	10% to 90% noncondensing