In updating a UC 520 to fix a bug in IOS, we have run into a small difficulty.
No matter what we do, the update fails during the CME part of the update. We were able to successfully update IOS but then we get a TFTP error. The error insists that another TFTP server is running. It is not. Ran a netstat -an and verified no open ports or services were running that would give this indication.
A growing consensus here is that the flash memory has a bad sector. We don't really know what the behavior of a UC 520 would be with a bad flash memory so this is speculation but what else could it be?
We have tried downloading the update on 3 different computers 3 different times, and running the update from each separate location with the same result.
Is there a way to use CCA to verify the status of the flash?
Is there some other process within the UC 520 that could be interfering with the update?
We are fully functional right now but I worry when everything is not working perfectly.
Use CCA's dashboard (under HOME Drawer) to check the % utilization of flash. If 90% or more, CCA may be blocking the update since it cant fit all the phone loads (part of the CME upgrade).
Use Phone Load Manager to only select the models you desire and also select auto format flash in the upgrade options to allow CCA to make directories on flash.