Hi All,
After few months I found a way to install Open WRT software on Buffalo Router WSR-3200AX4S at the below link:
Unfortunately all instructions are in Japanese (can overcome with Translate) but they are working 100% for WSR-3200AX4S, installed and so far no issues found. Thanks to developer @ssyysy2021 from above link.
The solution is suitable also for
Buffalo [WSR-2533DHP3]
ELECOM [WRC-G01]
Hope it will help some other people.
Cheers
Always good to see new devices gaining some support.
Please keep in mind that this work is currently not integrated into the official OpenWrt project. Therefore, support requests are best directed to the team developing these specific builds. Depending on the details, maybe this will someday be supported by the official versions of OpenWrt.