Multitasking is relative when it comes to each individual’s perspective of how you should do it. Many might have been let-down when they saw Apple’s multitasking function. But now Multifl0w has beautified multitasking on the iPhone, but only through the means of jailbreaking your iPhone. Here’s how it works:

1. Jailbreak. If you haven’t upgraded to the latest, jailbreak-breaking iOS 4.0.2 on your iPhone or 3.2.2 on your iPad, then jailbreaking with jailbreakme.com is still relatively easy. Just visit the site on your iPhone or iPad and follow the simple steps. There’s no jailbreak available for iPhone 4′s running 4.0.2 yet, but don’t cry yet as one’s bound to pop up sooner or later anyway.

2. Buy multifl0w 2.0 from the Cydia App Store. Multifl0w, which costs $5, has long been a staple of pre-iOS4 (read: jailbroken) iPhone multitasking, but a recent update adds the super sexy Exposé-style management seen in the clip below. You can easily customize the trigger for activating the Exposé, and, crucially, customize just what type of multitasking you want it to trigger.

Extracted from the Multifl0w FAQ:

Q: How does Multifl0w incorporate with Apple’s multitasking on iOS4?

A: This was a difficult problem to solve, because there are so many different possible solutions. So what’s the answer? Provide as many different customization options as possible so that it’s easy for everyone to have the backgrounding style they want. Multifl0w used in conjunction with Backgrounder should be able to provide you with the options that suite your preferences. Using Multifl0w without Backgrounder on iOS4 will function like Apple’s switcher, apps stay “open” in memory (although not actually running). Using Multifl0w without Backgrounder on 3.1.x is not advised, because apps will be closed as soon as they are exited. However, Multifl0w does not force Backgrounder to be installed on any OS version for maximum flexibility.

Q: Can I use both Multifl0w and Apple’s switcher together?

A: Yes, you can. Just set Multifl0w’s activation method to something other than Double-Press Home, and you will still be able to use both together.

The developers have noted that the Exposé-style multitasking will work on older iPhones and iPod Touches, though it really requires the speedy processors of the iPhone 4 and iPad for the full, smooth experience. You’ll still face the awful lagging feeling that you get when you throw in iOS 4 into your iPhone 3G.

[multifl0w 2.0 via Gizmodo]