- play_arrow Junos OS Overview
- play_arrow Junos OS Overview
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- play_arrow Install, Upgrade, or Downgrade for Junos OS Software
- play_arrow Junos OS Install and Upgrade Overview
- play_arrow Prepare for Installation and Upgrade
- play_arrow Upgrade to Junos OS with Upgraded FreeBSD
- play_arrow Install Software on Routers
- play_arrow Install Software on Switches
- Installing Software on EX Series Switches
- Configuring Dual-Root Partitions
- Troubleshooting Software Installation on EX Series Switches
- Troubleshooting a Switch That Has Booted from the Backup Junos OS Image
- Installing Software on QFX Series Devices (Junos OS)
- Installing and Recovering Software Using the Open Network Install Environment (ONIE)
- Personality Upgrade Process
- Upgrading the Personality of QFX10002-60C and PTX10002-60C Devices
- play_arrow Install Software on Firewalls
- play_arrow Manage YANG Packages During an Upgrade or Downgrade
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- play_arrow System Backup and Recovery
- play_arrow Back Up an Installation
- play_arrow Recover Junos OS
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- play_arrow Installing and Upgrading the BIOS and Firmware
- play_arrow For Routers
- play_arrow For Switches
- play_arrow For Firewalls
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- play_arrow Zero Touch Provisioning and Secure Zero Touch Provisioning
- play_arrow Phone-Home Client
- play_arrow Automatic Installation of Configuration Files
- play_arrow Automatic Installation of Configuration Files
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- play_arrow Configuration Statements and Operational Commands
- play_arrow Configuration Statements and Operational Commands
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Downgrade Instructions for NFX Series Devices Running Junos OS Release 23.1R1
On the NFX150, NFX250 NextGen, and NFX350 devices, you cannot downgrade Junos OS Release 23.1R1 directly to certain releases (listed in the Target Release column in Table 1). As a workaround, you can perform downgrade as a two-step activity, as described below:
Downgrade the Junos OS Release 23.1R1 software to the corresponding intermediate release.
Downgrade the software from the intermediate release to the target release.
Table 1 lists the target releases and the corresponding intermediate releases.
Target Release | Intermediate Release |
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Any 22.4x release earlier than 22.4R2 | 22.4R2 |
Any 22.3x release earlier than 22.3R2. | 22.3R2 |
| 22.2R3 |