This only works if your ISP allows unauthenticated GET requests; most block it.
After reboot:
Look on the router’s label. If you see or DG8245W2-12 , firmware is not interchangeable. Always match the full model number. dg8245w2 firmware update link
The most reliable way to update your device is to use the built-in update features provided by Huawei. 1. Web Management Interface (Recommended) This is the standard method for routers. This only works if your ISP allows unauthenticated