Never update firmware over Wi-Fi. If the connection drops, you could "brick" (permanently break) the router.
Never install firmware meant for a different region or hardware revision, as this can "brick" your router (make it unusable). Backup Settings: dg8245w2 firmware update link
Look on the router’s label. If you see or DG8245W2-12 , firmware is not interchangeable. Always match the full model number. Never update firmware over Wi-Fi
: If your router was provided by an Internet Service Provider (ISP), they often push updates automatically. If the update menu is missing, your ISP may have locked manual updates. dg8245w2 firmware update link