In this post, you will find a collection of Huawei E3351 dongle firmware and webui updates. Firmware and webui are essential part of the modem. Any wrong firmware can damage your device, so before proceeding, make sure you have taken right decision.
Firmware update, may ask for you password (firmware code), just leave comment below with model and IMEI, it will be updated within 8 hrs.
Note: E3351 data card is available in the market in two formats : hilink and non-hilink. Hilink firmware starts from 22, while non-hilink firmware starts with no. 21.
You can also refer unlocking guide of Huawei H3G E3351 (E3351s-2) Italy broadband dongle.
Download Huawei E3351s Update WEBUI 13.100.04.01.327 (Velcom Belarus)