you received two Mails from MDM mailing list with the documentations for the next steps and the PIN. Please follow the documentation.
Please check the device which firmware is installed. You can check this on the following steps:
Settings> General> Software Update
If you receive the message "iOS 8.2 your software is up to date" , then no update needs to be made and if this is not the case, then please install the latest version from your personal WiFi connection.
Please be aware that the connection with Outlook and DRX WiFi can take up to 24 hours.