The greenpois0n download was just released and runs on Windows, Mac OS X, and Linux. It’s a pretty straightforward jailbreak that will work on iOS 4.1 with the iPhone 4, iPhone 3GS, iPod touch 3g, and iPod touch 4g. The procedure is identical on the Mac and Windows so this guide is the same regardless of the platform.

How to jailbreak your iPhone using greenpois0n

Basically just follow the instructions within the greenpoison app, which are:

• Download greenpois0n
• Launch the app
• Turn off your iPhone (or iPod touch, etc)
• Connect the iPhone to your computer
• Click on “Prepare to Jailbreak (DFU)” and follow the steps to enter into iPhone DFU mode
• Once in DFU mode, click on ‘Jailbreak!’ to start the jailbreak process
• Wait for the jailbreak to complete, the status bar indicates what’s going on and the iPhone will reboot itself
• From the home screen, tap on the newly installed “Loader” icon
• Tap on Cydia and then tap on Install Cydia
• Once Cydia is installed you can remove the Loader app, tap on “Remove” and your iPhone will reboot itself once more
• Jailbroken!

That’s all there is to it, it’s a slightly cleaner and easier to follow install process than limera1n but otherwise not much different. If you’re looking to jailbreak your iPad too it’s basically the same.

Update: A new version has been made available, Download GreenPois0n Untethered Jailbreak for iOS 4.2.1

The greenpois0n Jailbreak is now available to download. The release is available for Mac, Windows, & Linux (much like the earlier launched limera1n jailbreak).

If you’re into jailbreaking and held off from limera1n, greenpoison is probably why.

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Pretty interesting comparison of Apple’s main product now vs 10 years ago. Where will Apple be 10 years from now? Will some variation of an iMac Touch be their main desktop product? What will the iPhone be?

Picture from Flickr

Ever wanted to know where exactly a specific file came from? Perhaps some document that appeared in the Downloads folder of a Mac, or maybe a weird file that’s laying on your desktop, what is the origin of that file? Maybe it’s an archive file, maybe its an mp3 or m4a file that you want to know it’s origin server or download URL, maybe a text document or PDF that you absolutely must recall where it originated from, a dmg for installing, whatever the document or file was, if it was downloaded from somewhere on the internet, you can probably get the details of origin right in Mac OS X with this little-known but incredibly useful trick.

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This is the first commercial for Windows Phone 7, which was announced on 10/4/10 at a press conference from Microsoft.

In case you didn’t know or don’t care, Windows Phone 7 is Microsoft’s new foray into the mobile world. They’re getting a bit of a late start, but Windows Phone is hoping to compete directly with Apple’s popular iPhone/iOS and Google’s Android (yea, Palm WebOS and Blackberry OS are somewhere in this race too, but I don’t care for either).

Here is the commercial, embedded for easy watching:

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Worried about the security of your MacBook or MacBook Pro? Reduce the chances of theft by slapping a cheap PC sticker over the Apple logo!

This is pretty funny but there’s actually an element of truth to the joke, since Apple logos are easy indicators of high priced goods. I knew someone who plastered stickers all over his MacBook Pro for the sole intention on making it look cheap as they traveled around the developing world, it sort of worked. Obviously nothing beats insuring your Apple hardware though, so if you expect any theft risk just pay the couple extra bucks a year to add the MacBook Pro to a theft and damage insurance plan.

I’m not sure of the original source but this is hilarious, thanks for sending it in Jesse.

You don’t need to download any apps to send group text messages with your iPhone. Hidden away in iOS 4 is the ability to send group text messages, now this may not seem that exciting by default but here’s why it’s great: using group messaging, you can send 100 people a text message but it only counts as ONE sent text!

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If you’ve used a tool like DaisyDisk to analyze your Mac’s disk space usage, you may have come across a file named ‘sleepimage’ that is rather large.

What is sleepimage in Mac OS X?

The ‘sleepimage’ file is just what it sounds like, it’s what your Mac had in it’s memory when the machine went to sleep, creating an image of your Mac’s previous memory state. When your Mac wakes from sleep, the content of sleepimage is read again and placed back into active memory, and your Mac is returned to the state that it was in prior to sleeping. Think of it like a swapfile of sorts, but for sleep and wake functionality only.

Why is sleepimage taking up so much space? 2GB, 4GB, 8GB, etc?

The sleepimage file is generally the exact same size as the amount of physical RAM your Mac has. If your Mac has 2GB of RAM, the sleepimage file will also be 2GB because there are 2GB of data that need to be stored when your Mac is put to sleep. You can check the size of your sleepimage file by typing the following command into the Terminal:

ls -lh /private/var/vm/sleepimage

You will then see data like:

-rw------T 1 root wheel 4.0G Oct 7 15:46 /private/var/vm/sleepimage

And the number between ‘wheel’ and the date is the sleepimage file size, in this case it is 4 GB.

There are cases where the sleepimage file is significantly larger than your physical RAM and this can be due to the file becoming corrupted.

Can I safely delete sleepimage from my Mac?

Yes, you can remove sleepimage and it will just be created again automatically the next time your Mac is put to sleep. To delete sleepimage, type the following command into the Terminal:

sudo rm /private/var/vm/sleepimage

You’ll be asked for the administrator password to gain access to remove the file, this is normal.

Where is sleepimage located?

If it wasn’t obvious from the previous commands, sleepimage is located alongside your Mac swapfiles at:

/private/var/vm/sleepimage

Hopefully that helps to explain sleepimage a bit and now you’ll understand what this mysteriously large file is on your Mac hard drive.

The limera1n jailbreak app runs on Windows and Mac, apparently a Linux version will be available to download as well. If you need to download the limera1n jailbreak, you can find the download links below.

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Limera1n jailbreak was just released, allowing you to jailbreak iOS 4.1 on the iPhone 4 iPhone 3GS, iPad, iPod touch 3G and 4G. It’s not the simplest jailbreak in the world but it’s also not the most difficult, just follow the instructions and you should be able to get it working. We’re going to cover using limera1n with the iPhone 4 and iPhone 3GS.
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Microsoft is busy making new friends with popular mobile developers, except some of the friendships seem to be entirely one-sided.

RovioMobile, the developers of the incredibly popular Angry Birds game, noticed that Microsoft put their famous apps icon on the Windows Phone 7 site – without permission and without any agreement to build the hit game for Windows Phone 7.

Oops. It looks like Microsoft has since taken the icon off of their WP7 site, perhaps they shouldn’t count their app chickens before the developer eggs hatch huh? I’m sure Windows Phone 7 will be reasonably popular and will likely even get Angry Birds onto the platform, but this is a great example of how not to build relationships with developers.

Microsoft is obviously pushing hard for Windows Phone 7 to be relevant from the start, earlier in the year it was revealed that they are directly paying mobile developers to create apps for the upcoming mobile operating system.

Thanks to Robert for sending in the tip and pictures.

Did you know there are iPod vending machines out there?

A reader sent in the following picture of an iPod vending machine, which is really quite an interesting concept.

I don’t think these are officially supported by Apple by any means, but they seem to be popping up in malls and airports all over the place around the world.

I wonder if they’ll soon be selling the iPad and Macs? Maybe even an iPhone? Who knows?

Get an Apple device, a candy bar, and a drink, all from the same row of vending machines, I suppose.

According to several major media outlets, Verizon will begin offering the iPhone on their network in early 2011. The latest claim comes from the reputable New York Times, which packs significantly more journalistic credibility than much of the general rumor mill:

Apple is now making a version of the iPhone 4 for Verizon’s network, according to a person who is in direct contact with Apple. Apple and Verizon will begin selling the phone early next year, said the person, who agreed to speak on condition of anonymity because the plans were supposed to be confidential and he did not want to alienate his contacts at Apple.

The New York Times cites the intense competition from Google Android as the motivation to bring the iPhone to Verizon’s network, in addition to being a preemptive strike against Microsoft’s upcoming Windows Phone 7. The Wall Street Journal also notes the early 2011 Verizon iPhone release date, again citing Android growth as the primary reason for Apple to end the longstanding iPhone exclusivity agreement with AT&T.

Amongst rumors that the next iPhone will use 4G LTE service, it was originally thought Apple was waiting for Verizon 4G before bringing iPhone to the largest cellular provider in the USA. At this point, it looks like the need for Apple to stem Android growth and preempt Microsoft will supercede the wait for Verizon’s 4G LTE infrastructure.

It remains unknown if the Verizon iPhone will be the same as the existing iPhone 4 model. An earlier report indicated that the CDMA iPhone will feature a metallic enclosure with integrated antenna, rather than the existing glass-backed Phone 4 which has had some well publicized antenna reception issues.

Here’s an awesome living room setup: a Mac Mini media center! They’re a fantastic addition to your TV and easier to setup than you’d think. Hooking a Mac to your TV is not just limited to Mac Mini’s though, check out our guide to setup a Mac media center and you’ll be able to do it with a MacBook, MacBook Pro, and more.

[ via Flickr ]

Amazon is offering Photoshop Elements 9 right now for a grand total of 30% off, when you combine the 10% instant discount with a $20 mail in rebate. This is a pretty good deal for the newest version of Photoshop Elements, which is shipped on a dual Mac/Windows installer disk.

Getting the deal is easy:

• Buy Adobe Photoshop Elements 9 (Win/Mac) which is listed at $89.99 on Amazon
• Fill out the original rebate form (comes in the box). It’s a $20 mail-in rebate valid until December 25, 2011
• Include the original Proof of Purchase TAB (located in the Elements 9 box)
• Include a copy of the sales receipt
• Mail it all into Adobe within 6 weeks of purchasing Photoshop Elements 9

There is a similar rebate for Adobe Premiere Elements 9 too if you’re shopping around for the latest Elements software.

There are numerous ways to eject a DVD from a Mac, but using a relatively unknown menubar item you can do this directly from the menubar too.

To enable this feature, navigate to /System/Library/CoreServices/Menu Extras/ and double click on Eject.menu

The easiest way to do this is with the “Go To Folder” key combo, which is Command+Shift+G and then paste in
/System/Library/CoreServices/Menu Extras/ then locate Eject.menu to open it into your menu. Disabling the menubar extra is easy, just hold down Command and drag it out of your menubar.

I was asked recently about the Mac OS X swapfile, specifically how to disable Mac OS X swapping entirely. I decided I will take this opportunity to talk a bit about Mac virtual memory (swap), it’s location in the Mac file system, and also to explain how to disable it.
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Don’t you hate it when your printer isn’t working? We all do, but if you’re in that situation here’s probably exactly what you should NOT do if your printer is toast. No, do not drag the monitor over to a copy machine, lay it flat on there (while keeping all the video cords connected to the computer, mind you!) and start making copies. You could try this but it sounds like a terrible idea, and though it would work kind of maybe, the quality of your printed whatever is probably going to be absolutely dreadful.
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