Only install a custom ROM if you are a technical user with a second device and you accept the risks. For the average user, the official Sunplus Box TV 120 update is safer.

To find the correct update, you match your device's hardware details, not just the name "TV 120."

Given the age of the hardware (typically 8-10 years old) and the security risks, the best "update" for a Sunplus Box TV 120 is to replace it.

The update starts but stops at 24% with a red error message. Cause: You downloaded a corrupt file or a version meant for a different hardware revision (e.g., Sunplus TV 120 Pro vs. standard). Fix: Re-download the firmware from the official source. Verify the MD5 checksum if provided. Ensure you have the correct model number printed on the bottom of the box.

Many versions now include support for RT-5370 and MT-7601 Wi-Fi adapters , ensuring better wireless internet stability for online features.