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How to downgrade the firmware

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Occasional Advisor

How to downgrade the firmware

Hi ,

 

I need to downgrade the firmware on Polycom 650 and 331 , whenever I tried to do it through the phone GUI I get no response . Please see the below image. What is the best way to do this ? Please keep in mind the client is not on the same premises they are on different network.

downgrade.PNG

 

Message 1 of 4
3 REPLIES 3
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Polycom Employee & Community Manager

Re: How to downgrade the firmware

Hello Synety,

 

the attached picture is still in approval so I am unable to see what it shows but you should utilize the community FAQ as it contains this post here:

 

Oct 7, 2011 Question: How can I setup my Phone / Provisioning / Download / Upgrade / Update / Downgrade Software?
Resolution: Please check => here <=

 

Please always post the software versions that are involved.

 

Best regards

 

Steffen Baier

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Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 2 of 4
Highlighted
Occasional Advisor

Re: How to downgrade the firmware

Hi Steffen,

 

Thanks for your reply, the above image is stuck their for roughly 2 hours basically not doing anything, i have tried this on different phones and on different networks still same results. The firmware in question is 4.1.0.84959.  

Message 3 of 4
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Polycom Employee & Community Manager

Re: How to downgrade the firmware

Hello Synety,

 

the picture still has not been approved so I cannot comment due being unable to see what is shown.

 

What software Version are you trying to downgrade to as UCS 4.1.0 is LYNC only.

 

Please bear in mind if your phone is loading the combined sip.ld it will have to download a rather large file.

 

If you have the split version of the sip.ld then it will only download its individual file which is the preferred method for slower networks.

 

You may want to consider to work with your Polycom reseller and/or Polycom support directly if you require further assistance.

 

Best Regards

 

Steffen Baier

----------------

Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 4 of 4