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The obb file extension is related to the Google Android operating system for smart phones and tablets based on Linux.The .obb file contains data that are shared between multiple applications installed in device.he obb file extension is related to the Google Android operating system for smart phones and tablets based on Linux.
bup file icon: The bup file extension is commonly backup of DVD IFO format. The bup files are used by a variety of software as a backup of the ifo files found on DVDs. IFO format are used to store various information on the DVD, such as tracks or subtitles. The backup is useful in case the primary VIDEO_TS.IFO file is unavailable or corrupted (due to a scratch on the surface of the disc).