9.1.1 Downgrader Utility

AdamSAIC · ‎06-23-2025

I need the downgrade utility for Poly CCX500 phones. I have a few phones at 9.1.1 that I can't downgrade and I need to get these back down to 9.0.1 to be usable on our phone platform.

SteffenBaierUK · ‎06-23-2025

Hello @AdamSAIC ,

Welcome to the HP Poly community.

The Release Notes and the community announcement for PVOS 9.1.0 clearly note this:

Downgrade limitations
Due to the introduction of new Teams applications for the move to AOSP device management and changes to the phone’s Android OS, after you upgrade your Poly CCX or Poly Trio C60 phone to PVOS 9.1.0, PVOS 9.1.0 becomes the new minimum software version. Returning to earlier software versions is not available, and the phone rejects attempts to install earlier versions.

!!!! Important note !!!!

Downgrade limitations

Due to the introduction of new Teams applications for the move to AOSP device management and changes to the phone’s Android OS, after you upgrade your Poly CCX or Poly Trio C60 phone to PVOS 9.1.0, PVOS 9.1.0 becomes the new minimum software version.

Returning to earlier software versions is not available, and the phone rejects attempts to install earlier versions.

Best Regards

Steffen Baier

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