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Polycom SoundPoint IP 335 endless reboot loop

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Polycom SoundPoint IP 335 endless reboot loop

Hi there,

My Polycom IP 335 phone is now in endless reboot. 

The phone was running SIP 3.2.2, running provisioned using IPFX. 

The problem started today, when it started it got stuck at updating initial configuration. When there was no activity for more than 3 hours, I plugged out the PoE lan cable, used the key combination 1,3,5,7 to reboot the phone and since then the phone is now in an endless loop.


It starts, shows the Polycom Logo, displays the message "Welcome, start boot in 6 s" and then again reboots, without even initialising the network. Any suggestions?

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Polycom Employee & Community Manager

Re: Polycom SoundPoint IP 335 endless reboot loop

Hello @tom-[e-merge] ,


welcome to the Poly Community.

I am unaware what IPFX is but as a workaround I would look at a local FTP server instead


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


The next step should also be to install a currently supported software. I suggest UC Software 4.0.14


Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

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