Technicolor DWI259S (also known as the UIW4020ETI ) is a 4K Android TV set-top box primarily provided by Etisalat UAE
Call technical support and say: "My Technicolor DWI259S is running firmware version X.X.X, but I see there are stability issues fixed in version Y.Y.Y. Can you push the latest firmware to my modem?" Most ISPs can trigger an update from their end.
The DWI259S is a mass-produced, low-margin box. ISPs stopped pushing updates for these models 2+ years ago. If you have a bug: technicolor dwi259s firmware download
Most ISPs push firmware automatically overnight. To check what version you have:
The Technicolor DWI259S uses a chipset. As of 2026, there is no stable OpenWRT release for this specific model due to closed-source drivers. Attempting to flash custom firmware is very risky. Only attempt if you have JTAG recovery tools. Technicolor DWI259S (also known as the UIW4020ETI )
Do not search for the file directly. Instead:
If your ISP refuses to provide updates (common for older models), consider buying a modern router like an or TP-Link Archer AX6000 and putting the DWI259S into bridge mode . This bypasses the DWI259S’s routing functions, using it only as a modem. Bridge mode firmware is often more stable. ISPs stopped pushing updates for these models 2+ years ago
Here is the hard truth:
If you encounter issues during the firmware update process, here are some troubleshooting tips: