RT-AX59U

Key dates

Release

January 2023 · estimate

How I calculated it: The first firmware ASUS's download page lists for this model, 3.0.0.4.388.31345 (2023-01-06), is marked 'Initial release'; its month is used as the launch month. The model may have gone on sale shortly before.

Last update

October 20, 2026 · version 3.0.0.4.388_34157

End of support

No end date

Estimated end

August 2029 · estimate

The release date plus the median support length of 46 Router models with a known end: 6 years 7 months.

Minimum support for the UK

December 31, 2026 · vendor notice

Maker’s end-of-life list

Listed for the EU only, no date given

Firmware updates

Updates I found on the maker’s pages, from January 2023 to October 2026. I read the notes of 20 of these updates and found security changes in 10.

2026-10-20

3.0.0.4.388_34157 Bug fixes

2026-10-12

3.0.0.4.388_34156 Security, new features or improvements

2026-08-12

3.0.0.4.388_34098 Security, new features or improvements

2026-05-06

3.0.0.4.388_34013 Security

2026-03-16

3.0.0.4.388_34011 Security, new features or improvements

Sources

• ASUS (opens in a new tab) End-of-support listlast verified November 13, 2026
• ASUS (opens in a new tab) Firmware downloadslast verified October 26, 2026
• ASUS (opens in a new tab) Support pagelast verified October 14, 2026
• Vulnerability data: vendor security bulletins, CISA Known Exploited Vulnerabilities catalog, NVD, FIRST EPSSas of November 13, 2026 · Data sources