Here is the "deep story" and advice on how to handle this situation: The "Deep Story" on Technicolor Firmware ISP Controlled:
If you own a Technicolor DWI259S , you likely have one of two devices: a standard cable modem or a combination modem/router (gateway). You might be searching for a firmware file because of slow speeds, random reboots, or Wi-Fi dropouts. technicolor dwi259s firmware download
Say, "I am stuck on firmware version X, and I have the latency/ping spike issue. Can you force the update to version Y?" Here is the "deep story" and advice on
Some ISPs provide firmware update files for manual download, though this is rare for cable gateways. For example: Can you force the update to version Y
The (also known by codename UIW4020ETI) is an Android UHD Hybrid Receiver primarily used by the Etisalat UAE eLife service. There is no official public "firmware download" page provided by Technicolor (now Vantiva) for individual users, as firmware for these provider-locked devices is typically managed through automatic Over-the-Air (OTA) updates. Firmware and Software Information