[Steam] 1.Right click "Insurmountable" in your steam library, Click "Property". 2.Select "Beta" and choose Insurmountable 1.3 from pulldown. ->Then your insurmountable will be patched to 1.3 in your library.

1.Steamライブラリ内でInsurmountableを右クリックしてプロパティを開く 2.ベータの中にあるプルダウンからInsurmountable1.3を選ぶ ->この後通常のアップデートのように1.3のパッチが当てられる。

[Epic Games] Maybe there is no way to down patch, as long as I see. If you know, please contact to me in twitter (Exceik_gameS)