The results also indicate that newer versions exist (e.g., from 2024), but the 2021 version is specifically available through the Telegram channel linked above.
You can also check doc.ifix.net.cn for the latest software versions. Download RT809F 20211012 rar
If you are looking for a more recent version (as a 2024 version was mentioned), RT809F & H Update The results also indicate that newer versions exist (e
The RT809F and RT809H update from October 2021 ( RT809H_RT809HSE_20211012.rar ) can be found within the telegram channel "RT809F & H Update". RT809F & H Update - 20211012 Download RT809F 20211012 rar