The progress bar will begin moving. The modem LED indicator will flash rapidly or turn off entirely.
The flashing utilities ( .exe firmware wizards) run natively on Windows operating systems. huawei+e303s1+firmware+update+free
. Flashing firmware for a different sub-model (like the E303u or E303s-2) can permanently damage the hardware. The progress bar will begin moving
Most Huawei E303s-1 modems require an authorization code (known as a Flash Code) before the firmware wizard allows an overwrite. Wait until the wizard displays a "Successful" or
Wait until the wizard displays a "Successful" or "Update Complete" confirmation message. Click . Step 5: Post-Update Setup Safely unplug the Huawei E303s-1 from your computer. Reinsert your SIM card into the modem slot. Plug the modem back into your PC.
Go to and ensure your mobile network operator's APN configuration profile is active. Troubleshooting Common Errors Error: "Find Port Fail" / Modem Not Detected