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Downgrade Instructions for NFX Series Devices Running Junos OS Release 23.1R1

date_range 01-Dec-23

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:

  1. Downgrade the Junos OS Release 23.1R1 software to the corresponding intermediate release.

  2. Downgrade the software from the intermediate release to the target release.

Table 1 lists the target releases and the corresponding intermediate releases.

Table 1: Release Compatibility for Downgrading Junos OS 23.1R1 on NFX Series Devices
Target Release Intermediate Release
Any 22.4x release earlier than 22.4R2 22.4R2
Any 22.3x release earlier than 22.3R2. 22.3R2
  • Any 22.2x release earlier than 22.2R3.

  • Any 22.1x release or earlier releases.

22.2R3
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