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iPhone and iPod touch: Understanding Gmail Archive

iTunes Guru — Thu, 23 Sep 2010 07:34:25 +0000

When using a Gmail account on an iOS 4 device, Mail archives Gmail messages rather than deleting the messages:

When you archive a message, it moves to the All Mail folder. It does not delete it from the Gmail account. You can learn more about the Gmail archive feature in Gmail Help.

iPod touch: Which iOS 4 software features does my iPod touch support?

iTunes Guru — Tue, 21 Sep 2010 22:24:23 +0000

Use this table to determine which features of iOS 4 are available for your iPod touch model:

iOS 4 Feature	iPod touch (2nd generation)	iPod touch (3rd generation)
Home screen Folders	√	√
Unified Inbox and threading for Mail	√	√
Multitasking		√
Bluetooth keyboard support		√
Home screen wallpaper		√
Data protection		√

For a list of additional features and capabilities available for iPod touch models, see the iOS 4 Software Update page.

iPhone and iPod touch: Calibrating Nike+

iTunes Guru — Sun, 12 Sep 2010 16:58:00 +0000

Use the following steps to calibrate Nike+:

On your iPhone or iPod touch, tap Nike+ and begin a workout.
- Note: You must enable the Nike+ application in Settings > Nike+ and link with a Nike+ sensor to use the Nike+ feature.
When your workout is complete, tap Calibrate.
Specify the actual distance and then tap done.
Tap Done again to save your calibration.

You can see the date of your last calibration on the Workouts screen in the Nike+ application.

iPhone and iPod touch: Syncing Notes

iTunes Guru — Sun, 12 Sep 2010 02:05:26 +0000

To sync Notes, enable it for each MobileMe or IMAP account:

Tap Settings > Mail, Contacts, Calendars.
Select a MobileMe or IMAP account.
Slide to turn on Notes syncing.

Note: If you are using MobileMe and you were previously syncing Notes with iTunes, MobileMe Notes syncing is automatically enabled. This can result in duplicate notes. See below for more information.

About the security content of iOS 3.1.3 and iOS 3.1.3 for iPod touch

iTunes Guru — Sat, 21 Aug 2010 02:18:53 +0000

iOS 3.1.3 and iOS 3.1.3 for iPod touch

CoreAudio

CVE-ID: CVE-2010-0036

Available for: iOS 1.0 through 3.1.2, iOS for iPod touch 1.1 through 3.1.2

Impact: Playing a maliciously crafted mp4 audio file may lead to an unexpected application termination or arbitrary code execution

Description: A buffer overflow exists in the handling of mp4 audio files. Playing a maliciously crafted mp4 audio file may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved bounds checking. Credit to Tobias Klein of trapkit.de for reporting this issue.

ImageIO

CVE-ID: CVE-2009-2285

Available for: iOS 1.0 through 3.1.2, iOS for iPod touch 1.1 through 3.1.2

Impact: Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution

Description: A buffer underflow exists in ImageIO’s handling of TIFF images. Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved bounds checking.

Recovery Mode

CVE-ID: CVE-2010-0038

Available for: iOS 1.0 through 3.1.2, iOS for iPod touch 1.1 through 3.1.2

Impact: A person with physical access to a locked device may be able to access the user’s data

Description: A memory corruption issue exists in the handling of a certain USB control message. A person with physical access to the device could use this to bypass the passcode and access the user’s data. This issue is addressed through improved handling of the USB control message.

WebKit

CVE-ID: CVE-2009-3384

Available for: iOS 1.0 through 3.1.2, iOS for iPod touch 1.1 through 3.1.2

Impact: Accessing a maliciously crafted FTP server could result in an unexpected application termination, information disclosure, or arbitrary code execution

Description: Multiple input validation issues exist in WebKit’s handling of FTP directory listings. Accessing a maliciously crafted FTP server may lead to information disclosure, unexpected application termination, or execution of arbitrary code. This update addresses the issues through improved parsing of FTP directory listings. Credit to Michal Zalewski of Google Inc. for reporting these issues.

WebKit

CVE-ID: CVE-2009-2841

Available for: iOS 1.0 through 3.1.2, iOS for iPod touch 1.1 through 3.1.2

Impact: Mail may load remote audio and video content when remote image loading is disabled

Description: When WebKit encounters an HTML 5 Media Element pointing to an external resource, it does not issue a resource load callback to determine if the resource should be loaded. This may result in undesired requests to remote servers. As an example, the sender of an HTML-formatted email message could use this to determine that the message was read. This issue is addressed by generating resource load callbacks when WebKit encounters an HTML 5 Media Element.

What are the model numbers for all iPods?

iTunes Guru — Sat, 20 Mar 2010 16:00:00 +0000

All iPod models are designated MxxxxLL/A

iPod

First Generation, 1G, Original, Classic
5GB Mac: M8513LL/A
5GB Mac: M8541LL/A
5GB PC: M8697LL/A
10GB Mac: M8709LL/A

Second Generation, 2G
10GB Mac: M8737LL/A
10GB PC: M8740LL/A
20GB Mac: M8738LL/A
20GB PC: M8741LL/A

Third Generation, 3G
10GB: M8976LL/A
15GB: M8946LL/A
15GB: M9460LL/A
20GB: M9244LL/A
30GB: M8948LL/A
40GB: M9245LL/A

Fourth Generation, 4G
Black & White screen
20GB: M9282LL/A
20GB U2: M9787LL/A
40GB: M9268LL/A

Color screen (Also known as iPod photo)
20GB: MA079LL/A
20GB U2: MA127LL/A
30GB: M9829LL/A
40GB: M9585LL/A
60GB M9586LL/A
60GB M9830LL/A

Fifth Generation (Video), 5G
30GB white: MA002LL/A
30GB black: MA146LL/A
60GB white: MA003LL/A
60GB black: MA147LL/A
30GB U2: MA452LL/A

Enhanced Fifth Generation (Video, 5G)
30GB white: MA444LL/A
30GB black: MA446LL/A
80GB white: MA448LL/A
80GB black: MA450LL/A
30GB U2: MA664LL/A

iPod mini

First Generation, 1G
4GB silver: M9160LL/A
4GB blue: M9436LL/A
4GB pink: M9435LL/A
4GB green: M9434LL/A
4GB gold: M9437LL/A

Second Generation, 2G
4GB silver: M9800LL/A
4GB blue: M9802LL/A
4GB pink: M9804LL/A
4GB green: M9806LL/A
6GB silver: M9801LL/A
6GB blue: M9803LL/A
6GB pink: M9805LL/A
6GB green: M9807LL/A

iPod photo
See Fourth Generation iPod above

iPod shuffle

first-generation
512MB: MA133LL/A
512MB: M9724LL/A
1GB: M9725LL/A

second-generation
1GB silver: MA564LL/A
1GB blue: MA949LL/A
1GB green: MA951LL/A
1GB orange: MA953LL/A
1GB pink: MA947LL/A

iPod nano

first-generation
1GB white: MA350LL/A
1GB black: MA352LL/A
2GB white: MA004LL/A
2GB black: MA099LL/A
4GB white: MA005LL/A
4GB black: MA107LL/A

second-generation
2GB silver: MA477LL/A
4GB silver: MA426LL/A
4GB green: MA487LL/A
4GB blue: MA428LL/A
4GB pink: MA489LL/A
4GB red: MA725LL/A
8GB black: MA497LL/A
8GB red: MA899LL/A

See FAQ What are the differences between all the iPod models?

Palm restores Pre iTunes syncing in update

iTunes Guru — Sat, 20 Mar 2010 16:00:00 +0000

Palm has released webOS 1.2.1 for its Palm Pre smartphone, restoring the device’s Media Sync functionality—which allows it to sync with iTunes by masquerading as an iPod—while adding the ability to sync photos. As it has done in the past, webOS 1.2.1 achieves this by identifying itself over the USB connection as an Apple product, complete with Apple’s USB Vendor ID number. This behavior was specifically mentioned and frowned upon in a letter sent last month by the USB Implementers Forum to Palm regarding Apple using its Vendor ID to restrict syncing capability to its own products. In a statement to AllThingsD, Apple said, “As we’ve said before, newer versions of Apple’s iTunes software may no longer provide syncing functionality with unsupported digital media players.” Apple first blocked the Pre shortly after its July release with iTunes 8.2.1.

Why is my iPod remote not working?

iTunes Guru — Sat, 20 Mar 2010 16:00:00 +0000

Most likely, the remote is not pushed in all the way. Push the plug into the iPod firmly, making sure you hear it click (a slight clockwise twist while pressing it in sometimes helps). Apple has published an AppleCare Knowledge Base document on the issue: iPod: Remote Buttons Do Not Work

Updated: 12|20|02

How do I use the iPod shuffle as a portable hard drive?

iTunes Guru — Sun, 21 Mar 2010 00:00:00 +0000

Like other iPods, the iPod shuffle can be used as a portable hard drive. The average person is more likely to use this feature with the shuffle than with other iPods, because unlike them, the iPod shuffle does not require the user to carry a connection cable, and it works equally well on Macs and PCs without drivers or reformatting.

By default, the ability to access the iPod shuffle as a hard drive is disabled. To enable it, enter the iPod Preferences page as we did above.

Here you’ll find an option entitled “Enable Disk Use.” When checked, iTunes will allow the iPod shuffle to appear in Windows Explorer (or the Mac OS’s Finder) as a detachable hard drive. The slider positioned below the checkbox instructs iTunes how much space to leave empty for data when filling the iPod via either Autofill or manual management. For example, in the photo above, we’ve reserved 128MB for non-audio use. Autofill will only fill the other 380-some Megabytes with music.

Why don’t I have the full drive capacity I paid for?

Using either Windows Explorer or the iTunes capacity bar at the bottom of the iPod shuffle page, you’ll notice that your iPod shuffle is reporting a slightly smaller total hard drive capacity than the number on the box. Don’t worry… this is completely normal for all storage media.

Contrary to popular belief, this anomaly is not caused by factory-installed programs, file system overhead, or swap space… it’s an unfortunate consequence of little more than math and marketing.

Hard drives are sold and marketed using decimal gigabytes. That is, a “GB” consists of 1,000,000,000 bytes. However, computers interpret gigabytes in binary. To a computer, 1 GB = 2^30 bytes, or 1,073,741,824 bytes.

The ratio of “actual” to “marketed” file size is the ratio of these two interpretations, or roughly 0.931.

Therefore, a 512MB iPod shuffle actually has 0.9313225*512MB, or about 476.8MB of space usable to a computer. A 1GB iPod shuffle will similarly report approximately 953.7MB.

What are “bitrates”?

iTunes Guru — Sun, 21 Mar 2010 00:00:00 +0000

The “bitrate” refers to the level of file compression in an MP3. The larger the bitrate, the less compressed it is.

Despite what you may have read in the papers, MP3s are not exact duplicates of the files on your CDs. Instead, the MP3 is a compressed file, and the type of compression is what computer-using folks term “lossy”, which means that information is “lost” when the MP3 is compressed.

For the most part, MP3s are designed to “lose” sound information you don’t hear anyway – CD Audio replays a large spectrum of sounds, even those human beings can’t hear. So the MP3 codec ditches some of those ultra-high and low frequencies. Bitrates are the deciding factor in just how much information will get ditched. The higher the bitrate, the more sound information is preserved. One of the results of this is what’s called a “data artifact” – if you listen closely to low-bitrate MP3s, you’ll be able to hear slight glitches, especially in the treble frequencies.

Thus, a 320k MP3 has more sound information than a 128k MP3. But, a 320k MP3 is also three times as large in megabytes as a 128k MP3.