OpenWrt on buffalo WHR-1166DHP4 Japanese Router

I would like to use VPN from my Buffalo WHR-1166DHP4 router but I am not able to find much infomation on it. Also this is a Japanese model so I am still not sure if it is possible to have open-wrt on this model.

I did try to follow instructions from this (How to flash LEDE onto Buffalo WHR-1166D?) page but the mentioned firmware does not get installed. Has anyone experience with this router? Any help will be appreciated.

Thank you.

@gourig01, welcome to the community!

It's also not listed in the Table of Hardware. That generally means it's not supported.

Flashing firmware that's isn't for your exact make/model is extremely dangerous and can result in an unusable device - be sure they're the same device.