Ott01.7z -

If you are on Windows 11 (updated late 2023 or later), you can often extract these files directly. Otherwise, use the official free software. Right-click the ott01.7z file. Select Extract All… from the menu.

You will need a specific app to open these files on a phone or tablet. ott01.7z

Open the app once to set it up, then double-click your 7z file to extract it automatically. If you are on Windows 11 (updated late