You probably know by now that AT&T isn’t a fan of unofficial iPhone tethering, and they are now auto-updating accounts to paid tethering plans when they detect an iPhone users unauthorized tethering activity.

How AT&T Detects Unofficial Tethering from the iPhone
So how does AT&T know you are tethering in the first place? Apparently it’s very easy to detect from iPhone users, as AndroidPolice explains:

Jailbroken iPhones typically use the same tethering technique as a standard iPhone, the one that’s already present in iOS. This method exposes tethering activity quite readily, because the iPhone, when in tethering mode, sends traffic through an alternate APN (AT&T access point/router) for the express purpose of identifying the traffic as tethered data. This makes it extremely easy for AT&T to identify whether or not an iOS device is utilizing tethering, and just how much of their data is consumed via tethering.

In other words, AT&T simply looks at who is using tethered data through these APN’s, and then they cross-check these user accounts to see if they’re paying for a tethering plan. It’s that simple.

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A few months ago, AT&T began cracking down on unofficial iPhone tethering usage by sending warning messages to account holders. The message was simple; if you’re using tethering but not paying for a tethering plan, you will be automatically upgraded to a tethering plan. Now AT&T is making good on that promise, and has started to automatically update user accounts that they suspect of using unofficial tethering methods.

Those who use a tethering app such as MyWi or PDANet are being notified of their plan changes through text messages:

AT&T Free Msg: We’ve noticed you’re continuing to enjoy the tethering feature with your smartphone. Your plan has been updated to a tethering plan ($45/mo incl. 4GB) and you’ll soon see this change reflected on an upcoming billing statement. Visit att.com/dataplans or call 866-679-7136.

Outside of having your data plan updated and including a new monthly tethering plan fee of $45, there does not appear to be any repercussions or animosity from AT&T. The biggest complaints from users about the AT&T crackdown pertain to data usage rights, with many suggesting that once they pay for wireless data they should be able to use it as they wish. Furthermore, grandfathered unlimited data accounts that are automatically updated to a tethering plan lose their unlimited data capability, and instead receive a 4GB transfer limit.

For some users this could be seen as good news, since the original iPhone and iPhone 3G are not capable of using official wireless tethering through Personal Hotspot due to the inability to update to iOS 4.3. While AT&T hasn’t specifically OKayed the usage, this suggests old iPhone owners can use wireless tethering through MyWi and PDANet without incident, assuming they pay the standard tethering fees to AT&T.

MyWi and PDANet are both apps available exclusively on the Cydia store to users who jailbreak their iPhones. Jailbreaking is not illegal, but it is frowned upon by Apple.

Apple is the most valuable brand in the world, with a brand value of a staggering $153.3 billion. Perhaps more impressive than the overall value is that Apple’s brand valuation grew a whopping 84% year over year.

Other Notable Findings from the brand valuation report:

• Google is #2 at $111.4 billion, down -2% from the year prior
• Microsoft is #5 with a brand value of $78.2 billion, up 2% from 2010
• AT&T is #7 with a brand value of $69.9 billion, I’ll go ahead and speculate that this is helped by their long-running iPhone exclusivity
• Verizon Wireless is #13 with a brand value of $42.8 billion, who recently started carrying iPhone
• China Mobile, #9 on the list, has been in talks with Apple to bring the iPhone on their network

Unsurprisingly, Bloomberg contributes much of Apple’s brand growth to the success of the iPhone, iPad, and Mac lineup.

You can see the full top 100 brands list at MillwardBrown.com. I find it interesting that some of the other top brand entries are either direct competitors to Apple (Google, Microsoft, Blackberry, etc), or carriers and resellers of Apple products (AT&T, Verizon, Walmart, Target, Vodafone, T-Mobile, Orange, etc).

For those using larger displays you may wish the Mac OS X Dock icon magnification was greater on the Mac, but it turns out this can be achieved easily with a defaults write command.

With a little effort, you can super magnify the size of Dock icons on Mac.

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Think you’ll ever be in a situation where your iPad needs to survive a drop from 1/10th of a mile up? Do you ever get so frustrated with your MacBook Pro that you want to toss it out of a two story window, but you don’t want it to actually break?

These are ridiculous scenarios and not survivable, right? Wrong. The new high-tech G-Form Extreme Sleeves for iPad and MacBooks do exactly that, and for the skeptics, the creators went about making videos to demonstrate how these cases allow electronics to absorb serious impacts.

The first video shows an iPad enclosed in a G-Form Extreme Sleeve being dropped from a light aircraft at 500′ and surviving. The second video shows a MacBook Pro 13″ wrapped in an Extreme Sleeve being thrown off a second story deck. Both survive without incident or damage. I’d say that’s pretty impressive.

Watch both of the videos below:

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Want to always show line numbers in TextWrangler documents on Mac OS X? Of course you do! This is a great feature and it’s super easy to enable displaying of line numbers in TextWrangler for Mac:

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Redsnow 0.9.6rc16 has been released for iOS 4.3.3 jailbreakers. This new version serves primarily to resolve a few bugs with the prior redsn0w app, most notably with the iPhone 3GS and iPhone 4’s side switch improperly vibrating. Additional fixes resolve a problem with verbose booting on the iPhone 3GS and an issue with the Windows app crashing during the jailbreak process.

If you are already jailbroken from rc15, you can simply run rc16 over that jailbreak to apply the bug fixes. If you need a walkthrough, follow this guide to jailbreak iOS 4.3.3 with redsn0w, everything is identical.

Download Redsn0w 0.9.6rc16

These are direct downloads links:

• Download now (Mac)
• Download now (Windows)

As mentioned above, the Windows-specific bug fix pertains exclusively to those jailbreaking from Windows Visa and Win 7. These users no longer have to adjust CPU affinity of redsn0w to prevent a crash, although it still must be ran in XP mode. This does not effect Mac users.

We’ll update more redsn0w releases and important jailbreak info as it becomes available.

I got tired my desktop and login wallpaper today and went looking for a bunch of new ones. Instead of keeping them to myself, I’ve decided to share the wealth. Without further ado, here are 15 high resolution wallpapers that will make your desktop look beautiful again.

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The iPad is already a huge hit in China, and some trendy restaurants are cashing in on the craze by using the iPad as a visual menu to order your meal from. Is this gimmicky or just another creative use of the iPad?

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If you thought the MacBook Air wasn’t powerful enough to be a primary Mac, think again. Here is a MacBook Air 13″ driving a 30″ Apple Cinema Display. Rounding out the setup is an iPad sitting in a BookArc stand running DisplayPad (App Store link) to serve as a 3rd display.

Image via flickr

Benchmarks for the 2011 iMac update are starting to appear and they’re very impressive. The chart below shows Geekbench scores for the entire 2011 iMac lineup, and for reference points they are compared against 2010 iMacs and 2009 iMacs. The improvements from last years to this years model are not quite as dramatic as the huge jump from Core 2 Duo to Core i7 architecture, but they still represent a 20%+ improvement in speed.

(FYI the contrast on the benchmark chart was altered from the source to reduce file size)

These results were compiled by PrimateLabs, the developers of Geekbench. You can run the test suite yourself on any Mac (or even a PC or iPhone), but be forewarned, unless you have a Core i-series equipped Mac, speed envy may inspire spontaneous upgrade decisions and a visit to the Apple Store.

On a related note, these benchmarks are exactly why I hope the rumor of Apple moving to ARM processors for the Mac is false.

Apple may be looking to move their laptop lineup from Intel processors to ARM CPU’s sometime in the next few years. According to a report on SemiAccurate, the move away from Intel is a “done deal” and that the transition to ARM processors will likely happen to Apple’s desktop lineup as well. ARM processors currently power Apple’s iOS lineup including the iPhone and iPad, while Intel processors power all existing Macs.

SemiAccurate (maybe that name is telling?) who claims to have sources with knowledge of the matter, seems absolutely certain of the move:

So short story, x86 is history on Apple laptops, or will be in 2-3 years. In any case, it is a done deal, Intel is out, and Apple chips are in. The only question left is if they will use their own core, a Samsung core, or the generic ARM black box.

They also say that waiting 2-3 years is enough time for ARM to develop higher end chips with full 64 bit support. MacRumors further notes that Apple has made heavy investments in ARM architecture, acquiring several companies to move the processor design in-house and completely under their control.

This rumor has caused quite an outrage on the Mac web, since ARM CPU’s are perceived as significantly less powerful than Intel CPU’s, although waiting a few years may be enough time for processing power to catch up. While the move may seem farfetched, it’s entirely possible considering Apple transitioned from IBM CPU’s to Intel CPU’s which caused similar disbelief and frustration, but ultimately results in more powerful Macs.

The idea of ARM processors coming to Mac hardware has also reignited the theory of iOS and Mac OS X merging down the road, as several Apple patents originally suggested such hybrid machines are in the works (touch Mac, iMac touch runs Mac OS & iOS, MacBook touch, etc). The basic idea is a single OS that transitions between an easy interface, perhaps how LaunchPad in Lion resembles the iOS switchboard, that is intended for most users, while power users would have access to a more advanced interface for things like app development and system administration.

Remember, this is all rumor, theory, and conjecture, so until you see an announcement from Apple, nothing is guaranteed.

Ultrasn0w has been updated to version 1.2.3 with support for preserved baseband running iOS 4.3.3. In other words, ultrasn0w 1.2.3 does not unlock new baseband, but it does work to keep your unlock if you have been tugging along iPhone 4 with 1.59.00 or iPhone 3G & 3GS with 4.26.08, 5.11.07, 5.12.01, 5.13.04, and 6.15.00.

If this applies to you, you’ll want to use PwnageTool 4.3.3 (Mac) or Sn0wbreeze (Windows) to jailbreak while preserving your old baseband and updating to iOS 4.3.3.

Install Ultrasn0w Unlock for 4.3.3

After you are jailbroken, ultrasn0w is installed through Cydia. You can generally do this just by searching for “ultrasn0w” but if that fails:

• Add http://repo666.ultrasn0w.com as a source repository to Cydia
• Search for “Ultrasn0w 1.2.3” and install
• Reboot your iPhone

Assuming you have supported baseband and everything is done correctly, the iPhone will boot unlocked and ready for another SIM card. Remember that many unofficial carriers do not support 3G networks so you should disable that in network settings if things aren’t working as expected.

Jailbreaking iOS 4.3.3 is made easy with the redsn0w utility, if you’re not sure what to do then this guide will walk you through the process. The tutorial is geared towards the iPhone, but the steps would be the same for an iPod touch and iPad. This is an untethered jailbreak, meaning you can reboot freely without concern.

Requirements before starting:

• Compatible hardware includes: iPhone 3GS, iPhone 4 GSM, iPad 1, iPod touch 3rd & 4th Gen
• You need the latest version of iTunes (10.2.2)
• Update your iPhone, iPad, iPod touch to iOS 4.3.3 before proceeding
• Download Redsn0w 0.9.6rc15 (Mac & Windows versions available)
• Download iOS 4.3.3 IPSW for your specific device
• About 10 minutes of your time

If you’re familiar with redsn0w and jailbreaking in general, this new version is not much different, although you do now have the ability to enable multitouch gestures during the installation. All ready? Let’s get started…
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PwnageTool 4.3.3 has been updated and released to provide an untethered jailbreak for iOS 4.3.3. The update supports jailbreaking iPhone 4, iPhone 3GS, iPad 1, iPod touch 3rd & 4th gen, and Apple TV2. Support is absent are iPad 2 and iPhone 4 CDMA.

Download PwnageTool 4.3.3

PwnageTool is for Mac only. Windows users will need to use sn0wbreeze or redsn0w.

• Download Now (Mirror 2) (Mirror 3) (Mirror 4)

The Dev Team provides the SHA1 Sum of fc2721a6c1230aa676729b2e4aeeec3cd4ffed7a if you want to verify your downloads.

The PwnageTool update comes alongside redsn0w 0.9.6rc15, but PwnageTool differs from redsn0w in that it allows Mac users to create customized versions of their IPSW. This is a necessary procedure for iPhone users who wish to preserve baseband and some carrier unlocks. If you are just looking to jailbreak your device, redsn0w is easier, but does not offer the ability to preserve baseband with custom IPSW.

Redsn0w 0.9.6rc15 has been released to jailbreak iOS 4.3.3 untethered on any of the following compatible hardware: iPhone 3GS, iPhone 4 GSM, iPod touch 3rd Gen, iPod touch 4th Gen, iPad (original, not iPad 2), and Apple TV2. For those wondering, iPad 2 is still not jailbreakable.

As usual, you’ll need to download iOS 4.3.3 IPSW for your corresponding device before getting started. The iOS 4.3.3 updated focused on alleviating the tracking cache bug, and otherwise offers no feature enhancements.

Download Redsn0w 0.9.6rc15

Update: Redsn0w 0.9.6rc16 has been released, the download links have been updated to reflect this.

Mac & Windows versions are available, these are direct download links:

• Download now (Mac)
• Download Now (Windows)

If you aren’t sure what to do, follow our guide to jailbreak iOS 4.3.3 using redsn0w.

The Dev Team notes that if Windows users are having problems running redsn0w, that they should set CPU affinity to 1. Additionally, running Redsn0w in XP Compatibility mode can help alleviate some errors. Mac users don’t have to worry about any of this.

Alongside the new version of redsn0w are updated versions of PwnageTool for creating customized IPSW, and a new version of the ultrasn0w unlock. Be aware that the ultrasn0w update relies on the preservation of old baseband and is not considered a new unlock.

If you like to keep an eye on system resources and you want to branch out from the GUI Activity Monitor, check out htop for Mac. htop is basically a significantly improved version of top, which lets you monitor system resources, CPU core load, memory use, load averages, and view and manage individual running processes.

If you’re coming to Mac from the linux world, you’re probably already familiar with htop, but if you’re not here’s why it’s better than top: for starters, it just looks better and is easier to read thanks to an improved layout and use of ANSII colors, but beyond that it’s great because it functions much like a task manager, allowing you select and then renice or kill processes as needed. I find this easier than manually entering PID’s through top. Anyway, let’s get htop installed in Mac OS X via a package manager like Homebrew or MacPorts.

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Do you have some source code, text, or a command string that you want to securely transfer from one Mac to another? Combining the command line clipboard tools pbcopy and pbpaste with SSH we can do exactly that, and it doesn’t matter where the other Mac is located: be it LAN, WAN, or anywhere.

Here is the basic command syntax:

pbpaste | ssh username@ipaddress pbcopy

For transferring data on a LAN, you can use another Macs hostname or IP address.

This is highly useful because using this method is secure, plus it will not mangle special characters or code in the manner that many email and IM clients will.
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