I need to upgrade an C3825 IOS, from c3825-adventerprisek9-mz.124-22.T to c3825-adventerprisek9-mz.124-22.T3.bin
Running with CME 7.0(1) (the compability matrix say that is compatible with my new IOS)
I don't want to make any change to version or config of CME, then the question is, if i upgrade the IOS, the CME will have some missing files, config, or something wrong?
I can upgrade IOS without touch the CME?
Somebody can help if this will complete without troubles?
Thx in advance
Hari is correct. I would recommend going right to the .24 train though. 24 has been really stable and works well.
Yes no need to bother about CME configuration and version will not change with this upgrade.
After upgrading your phones time might be changed, in that case you may need to reconfigure time settings according to your region and do manual reboot for all phones (there are options to select only one phone or rebooting one after another)
Make sure you are not deleting any load files or CME realted files from flash
If you have CUE in your end then you may face MWI issue where you need to create MWI application again.