Download Indmrt Zip

I have a task, I need to download from the server add-on files for minecraft (.mcaddon, .mcpack, etc.) on android. For this I use DownloadManager. It downloads the files, but I can't open them in minecraft. I assumed that the problem is in MimeType, so I tried several solutions (application/x-freearc, application/octet-stream, application/zip, multipart/x-zip, application/x-zip-compressed) but they did not work. I attach my code and the file I use.

Download indmrt zip

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