Choose your operating system (e.g., Windows 7, XP, or DOS). For BIOS flashing, Windows or DOS are typical.
Never trust a random .exe file from a forum. You need a raw .bin file. Reliable sources for the Compaq 610 include: compaq 610 bios bin file
If you need a "clean dump" for a programmer, sites like Indiafix or CFirmware host specific motherboard-indexed BIN files. Choose your operating system (e
If you flash a generic bin file, your Compaq 610 will work, but you might lose your Windows activation (OEM key) and Wi-Fi MAC address. To fix this: Choose your operating system (e.g.