In this post you will get all available firmware and WebUI download link absolutely free. You can refer unlocking guide of Tata Photon Max 3G WiFi Data Card (Huawei E8231s-1). I had also unlocked Huawei E8231 Life (Belarus).
Note: Firmware may ask you for code, leave comment below with model and IMEI to get it free. However, unlock code is chargeable.