If using Scan Center with a non-default value (default = “-1”) for the UCF settings de_network_fwCompatibilityLevel*, users must review the following Knowledge Base article before upgrading to this release (this is not common):
Note: Although the link is specifically for the MX822, this article is applicable to all multi-function devices (MFP’s) using Scan Center.
Note: Ensure the firmware you download is the correct one for the product you have.
Downloading the latest printer firmware.
Firmware TLS Support.