T48G and EHS36 not detected after reboot

[Darren76]

We have a customer testing a T48G and EHS36.
T48 is on 35.80.0.130
their issue is that if the phone reboots due to a configuration change or loses power for any reason the EHS is required to be re-seated to work.

I have attempted to update the firmware on the EHS but have been unsuccessful in locating a process that works on the T48.
If I use the Zero Touch it does not does not start the expansion upgrade process

Unfortunately they do not have any other model of phone to complete the upgrade..

Cheers