This occurs if you try uploading the compressed .zip folder directly. Ensure you extract the file first and select only the unzipped .bin file. Double-check that you did not accidentally download firmware meant for a different model like the Tenda N300 or F3. The Router Lights Are On, But Internet Access Is Gone

For detailed assistance with your specific Tenda router model, consulting with official Tenda support is recommended for the most secure update. If you'd like, I can: