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AMA-CUCM Troubleshooting: Best Practices for Reading Trace Files

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DX650 FIRMWARE DOWNGRADE FAILURE FOR SOME PHONES

Hello Experts!

 

I recently upgrade firmware for the DX650 Collaboration end points to version sipdx650.10-2-3-33 but i found this unstable in our environment. I then successfully downgrade the firmware to version sipdx650.10-0-2-24 on all the end points except the two end points. The status of two end points only showing me download status failed with "Inactive Load Failure Reason Internal Phone Error".

 

I tried to erase all the security settings and ITL files but still no success. Can any one know work around for it ?

  
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