I wanted to upgrade the dx 70 from android version to CE software using cisco cloud upgrader that has been registered to CUCM and on the document https://upgrade.cisco.com/DX. it doesn't mention if we have to change configure on CUCM, I wanted to make sure if i don't have to configure on CUCM. Can anyone give me an explanation?
Go through the Migrate a Cisco UCM registered DX device to CE software (page 1 of 5) if tis registered through the CUCM.
if you are going through the Cloud Upgrader tool , you need to change the TFTp address to upgrade.cisco.com or 22.214.171.124. In that scenario your DX70 will not register with the CUCM during the migration. once converted you can register it back with the CUCM.