RT-AX56U

Key dates

Release

December 2019 · estimate

How I calculated it: The first firmware ASUS's download page lists for this model, 3.0.0.4.384.7764 (2019-12-17), is marked 'Initial release'; its month is used as the launch month. The model may have gone on sale shortly before.

Last update

May 6, 2026 · version 3.0.0.4.386_52090

End of support

May 2026 · estimate

The maker gives no date: this is the month of the last update.

Minimum support for Singapore

February 28, 2025 · vendor notice

Maker’s end-of-life list

Listed, no date given

Firmware updates

Updates I found on the maker’s pages, from December 2019 to May 2026. I read the notes of 16 of these updates and found security changes in 11.

2026-05-06

3.0.0.4.386_52090 Security

2026-03-16

3.0.0.4.386_52088 Security, new features or improvements

2025-10-27

3.0.0.4.386_52049 Security, bug fixes, new features or improvements

2025-03-17

3.0.0.4.386_51725 Security, bug fixes, new features or improvements

2024-11-11

3.0.0.4.386_51712 Security

Sources

• ASUS (opens in a new tab) End-of-support listlast verified November 13, 2026
• ASUS (opens in a new tab) Security bulletinlast verified October 15, 2026
• ASUS (opens in a new tab) Firmware downloadslast verified October 15, 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