Hello,
You can choose any of the methods all will work:-)
if you wanted it through CUCM check in that device pack what is the firmware versions for these device and once you upgrade probably device defaults will be updated and it will upgrade the device once it is rebooted.
Note for this your VC endpoints should be provisioned with CUCM.
Thanks
Please rate if it is helpful and mark as accepted solution if applicable...
Thanks
Please rate if it is helpful and mark as accepted solution if applicable....