Before searching, locate the model name on the front or top of your device (e.g., ECOSYS M5526cdw or TASKalfa 3554ci). 2. Visit the Kyocera Download Center
This is what you are looking for. Note that some firmware is bundled as a "Firmware Update Tool" for easier installation. How to Install Kyocera Firmware There are generally two ways to update your Kyocera device: Method A: The USB Flash Drive (Most Reliable) Format: Use a FAT32-formatted USB drive. Kyocera Firmware Downloads