JTAC recommended versions of Junos software

TAC recommended versions of Junos software are listed to assist with determining which version of software to download and install.
This article applies to the following devices:

• SRX Series

Problem or Goal:

For customers planning an upgrade or initial installation, JTAC recommends the Junos software versions in this article. These versions are selected using input from Juniper Engineering, customers, and analysis of field usage data.

Exceptions to this include:

• JTAC has specifically recommended that customers use a version of Junos software that is different from what is listed.
• You require specific features that are available only in another version of Junos software. In this case, be sure to download the latest maintenance release.
• Your currently installed version of Junos is working well.
• If you use NSM, refer to the NSM & Junos Compatibility Matrix to make sure the recommended Junos software version can be managed by NSM.

Solution:
To download Junos Software, go to the Junos Platforms - Download Software site.
The JTAC Recommended Junos Releases are in the tables below.

SRX Series Services Gateways

Platform	JTAC Recommended Junos Software by Platform	Release Type	Last Updated
vSRX	Junos 15.1X49-D15.4	Standard	04 Sep 2015
SRX100B/H	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX100H2	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX110H	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX110H2	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX210B/H/BE/HE	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX210H2	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX220H	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX220H2	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX240B/H/B2/H2	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX550	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX650	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX1400	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX3400	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX3600	Junos 12.1X46-D40.2	Standard	18 Nov 2015
SRX5400	Junos 12.1X46-D40.2 (*1)	Standard	18 Nov 2015
SRX5400 w/RE-1800X4	Junos 12.1X47-D20.7	Standard	11 May 2015
SRX5400 w/IOC3	Junos 15.1X49-D10.1	Standard	04 Sep 2015
SRX5600	Junos 12.1X46-D40.2 (*1)	Standard	18 Nov 2015
SRX5600 w/RE-1800X4	Junos 12.1X47-D20.7	Standard	11 May 2015
SRX5600 w/IOC3	Junos 15.1X49-D10.1	Standard	04 Sep 2015
SRX5800	Junos 12.1X46-D40.2 (*1)	Standard	18 Nov 2015
SRX5800 w/RE-1800X4	Junos 12.1X47-D20.7	Standard	11 May 2015
SRX5800 w/IOC3	Junos 15.1X49-D10.1	Standard	04 Sep 2015

Notes:

1. KB29651 - Unable to upgrade from Junos OS 12.1X46 to subsequent releases of Junos OS on SRX5400/5600/5800 platforms due to "The /cf filesystem is low on free disk space" on SRX5k RE-13-20