To upgrade the power collector appliance, please follow the steps outlined below.
Login to appliance manager on power collector appliance
You can login to http://IP:4242 where IP is the IP or FQDN of the power collector appliance.
Default login is d42admin/default
You can change the password from "d42admin" button on top right.
Upload the update file
Go to Application > Update Application to upload the the update file.
Apply the update file
You can apply the update file from the console or by doing a SSH to port 442 on the IP/FQDN for the power collector appliance. Default login is ubuntu and password is default. (You can change the password from the menu).
Press option 3 and follow the prompts to complete the update.