Successfully Converting Cisco 7821 & 8865 to MPP?

Hi everyone,

Has anyone here successfully converted Cisco Enterprise phones to MPP firmware?

The models I’m trying to convert are:

- Cisco 7821

- Cisco 8865

I’d like to know:

- Which procedure you used;

- Which migration firmware worked;

- Whether a downgrade or intermediary firmware was required;

- And if the process was done via TFTP, GUI, or SSH.

Any experience, tips, or documentation would be greatly appreciated. Thanks!