In order to fix their mistake, the friends embarked on a series of wacky adventures through different eras, meeting famous historical figures and encountering bizarre cultural phenomena along the way.
As for the "dual audio 720p download portable" part, let's just say that the friends were able to document their journey using a high-tech, portable camera that allowed them to capture their adventures in stunning 720p resolution. They even managed to sync the audio tracks to create a dual audio experience, which they later shared with their friends and family.
Without hesitation, the friends decided to take the time machine for a spin. They set the dials to 1995, their favorite year in music and movies. As they pressed the button, the hot tub started to glow, and before they knew it, they were transported back in time.
The time machine, which looked suspiciously like a high-tech hot tub, had a note attached to it that read: "For emergency use only. Press the button to travel through time."
However, things quickly took a turn for the worse. They soon realized that they had accidentally created a rift in the space-time continuum, causing chaos and destruction throughout the timeline.
Of course, this is purely fictional, and I wouldn't recommend attempting to build a time machine or download copyrighted content without proper authorization.