Both VXDIAG Subaru SSM3 and SSM4 software come with multi-language. Here’s the tip to change 2020 version SSM4 language.
SSM3 Language: English, German, Spanish, French, Italian
SSM4 Language: English, Japanese, French, German, Spanish, Italian, Russian, Chinese, Polish
Change Subaru SSM3 language:
Run SSM3, go to Tool tab- Option – Language, select language desired, and save.
Change Subaru SSM4 language:
Run SSM4, press Setting icon the on bottom left
Go to Option– Language setting, select language desired, and save.