i recently bought an rx 550 and to make it work i need to update my board.Before you do a BIOS update can I ask why you wanna do a BIOS update? Do you have any issues with your system? Is it for a CPU upgrade? If you have no issues do not update the BIOS.
Read this thread - https://forums.tomshardware.com/threads/where-to-download-bios-file-for-intel-dh61ww-mobo.3618815/