This update adds the following features:

• New interface with a single-window layout and streamlined controls
• Preset Destinations for common encoding tasks
• Simplified setup for distributed encoding
• Hardware-based H.264 encoding in supported Share operations
• Support for Dolby Digital Plus encoding
• Share directly to YouTube at 4K resolution
• Share directly to Chinese video sites Youku and Tudou

This update improves overall stability, performance, and compatibility. Updates include:

• Removes 1 GB file size limit for uploads to Vimeo
• Fixes a stability issue when playing back certain MPEG-2 files
• Fixes a stability issue in Qmaster when processing multiple jobs

This update improves overall stability and performance including, to fix an issue with uploading clips larger than 1 GB to Vimeo.

This update improves overall stability and performance including:

• Improved cluster setup eliminates the need to have Compressor open on all cluster nodes
• Ability to use encoding clusters without administrator authentication
• Addresses an issue related to third-party QuickTime components that could prevent Compressor from opening
   

Compressor version 4.0.4 improves overall stability and performance including:

• Enhancements to Share Monitor for MacBook Pro (Retina, Mid 2012)
• Resolves a stability issue that could occur when selecting the Publish to YouTube job action from the Inspector

Compressor 4.0.3 adds functionality and improves overall performance including:

• Ability to run Compressor on a Mac without a monitor
• Fixes an issue with exporting when logged in as an Open Directory user
• Improves performance when encoding MP4 and AVI files
• Adds an export setting for 1080p video on compatible iOS devices

Compressor version 4.0.2 improves overall stability and performance including:

• Markers are set as chapter markers by default
• Adds Uncompressed 8-bit and 10-bit 4:2:2 to export settings list
• Improves the speed of transcoding from Uncompressed 10-bit 4:2:2 to ProRes

Improves overall stability and performance including:

• Updates the bitrates in Cellular settings for HTTP Live Streaming
• Fixes an issue with accessing QuickTime Export Component settings in Final Cut Pro X
• Fixes an issue in which This Computer cluster does not appear when OS X is configured in Chinese
• Resolves stability issues when launching Soundtrack Pro after Compressor 4 is installed

A reset is the first step in a process that restores your AirPort base station to a state that will allow you to gain control of it when you have either lost the password or when the device is not responding as expected. Depending on the type or reset needed, you will either need to push a reset button on the device or complete the reset from the AirPort Utility application.

AirPort base stations with 802.11b and 802.11g support soft and factory default resets, while AirPort base stations with 802.11n and 802.11ac support soft, hard, and factory default resets.

Depending on the situation, you will need to choose one of the following reset types:

• Soft reset: Resets the device password and disables security for five minutes so that you can join the network to make changes.
• Hard reset: Resets the base station back to an unconfigured state, but retains the last saved configuration and any profiles so you can restore your base station from previous settings.
• Factory default reset: The same as a hard reset but also removes any saved configurations or profiles.

• Soft reset: Perform this reset if you have forgotten your password.  A soft reset resets your password and disables security settings (Access Control and RADIUS settings are temporarily interrupted). Forgetting the password would normally prevent you from connecting to or configuring the device. If you make no changes within five minutes of doing a soft reset, the device will revert back to its former state. All of the device's settings will be available after it has restarted.
• Hard reset: Perform this reset for troubleshooting and resolving problems with an unresponsive device, or to troubleshoot network accessibility issues.
• Default Settings reset: Perform this reset if you wish to repurpose the device and want to remove all personal profiles and settings first. This reset resets the device to its state when you first purchased it. Data stored on internal or external hard drives connected to the device will not be erased. If you choose, you may manually erase the hard drive using AirPort Utility. 

• AirPort base stations are set to request an IP address by DHCP.
• AirPort base station passwords are "public."
• AirPort base station names revert to "base station xxxxxx," where xxxxxx is the last six digits of the wireless MAC address*.
• AirPort base station network names are "Apple Network xxxxxx," where xxxxxx is the last six digits of the wireless MAC address*.

*A MAC (Media Access Control) address, also known as a "network ID," is a unique hardware identification number for a network port.  You can find the wireless and Ethernet network IDs on the printed label on the bottom or side of the device.

• The device will remain in soft reset mode for five minutes. If you do not make your changes within five minutes of pressing the reset button, you will need to reset it again.
• When troubleshooting, you should only use hard or factory default resets if all other methods of accessing the device fail or if you want to repurpose the device.
• If your device stops responding completely, you can reset the device. A hard or factory default reset may be useful when troubleshooting a problem, because it will restore the device to its default state, allowing you to reconfigure it.
• In the case of AirPort Graphite or AirPort Snow (Dual Ethernet) base stations, your computer should be directly connected to the device using an Ethernet cable, as you will need it to be able to configure the wireless connection.

A soft reset is instant. As soon as you hit the reset button, the device in soft reset mode.

After a hard or factory default reset, the device will not be visible in the AirPort menu item or AirPort Utility for a short time. The device will take approximately 45 seconds to become available again. You may then use the device in its default state or reconfigure it using AirPort Utility.

• The latest version of AirPort Utility should be used for 802.11n and 802.11ac base stations. The latest version of AirPort Utility can be found on the Support Downloads page.
• For AirPort Graphite and AirPort Snow (Dual Ethernet) base stations, use AirPort Admin Utility for Graphite and Snow 4.2.5.

Here's a close-up view of the reset button icon:  

 

AirPort Extreme and AirPort Time Capsule 802.11ac  - The reset button is to the right of the AC Power Inlet:

AirPort Extreme 802.11n (top) and AirPort Time Capsule (bottom) - The reset button is to the right of the last LAN port:

AirPort Express 802.11n (2nd Generation) - The reset button is located near the audio port:

AirPort Express 802.11n (1st Generation) - The reset button is located near the audio port:

Extreme base station (802.11b/g) - The reset button is to the left of the Ethernet WAN port:

Snow (Dual Ethernet) (802.11b) - The reset button is to the right of the ethernet LAN port:

Graphite (802.11b) - The reset button is located underneath the device:

 

Choose your device and the type of reset you wish to complete below to see the appropriate reset steps.

AirPort Express, AirPort Extreme, and AirPort Time Capsule (802.11n/ac)

Extreme base station (802.11b/g)

Graphite (802.11b) and Snow (Dual Ethernet) base station (802.11b)

Keynote Remote needs to be linked to your Mac in order to control your Keynote presentation from your iOS device.

1. On your iOS device, tap Settings > Wi-Fi to verify it's on the same wireless network as your computer. For help connecting to Wi-Fi on your device, see iOS: Troubleshooting Wi-Fi networks and connections.
2. On your Mac, open your presentation in Keynote.
3. Choose Preferences from the Keynote menu and select Remotes.
4. Place a checkmark next to Enable.
5. On your iOS device, open the Keynote app and tap the Keynote Remote icon in the toolbar of the presentation manager. If you're in a presentation, tap Presentations in the toolbar to open the presentation manager.
6. If this is the first attempt to link to this Keynote Remote, tap Continue. If this is not the first link to this Keynote Remote, tap the Devices button, and then tap "Add a Device."
7. On your Mac, click the Link button next to the name of your iOS device. It should appear in the Remotes menu you had open.
8. Confirm that the four digit passcode that appears on your Mac also appears on your iOS device. If the passcode matches, click Confirm.

You can now control the slideshow on your computer from your iOS device by tapping Play on the iOS device. For instructions on using Keynote Remote once you have it linked, see the Using Keynote Remote section below. 

If you have a presentation in Keynote for iOS, you can control your presentation from another iOS device.

1. On both iOS devices, tap Settings > Wi-Fi to verify both iOS devices are on the same wireless network.

   For help connecting to Wi-Fi on your device, see iOS: Troubleshooting Wi-Fi networks and connections. If a Wi-Fi connection is unavailable, on both devices go to Settings > Bluetooth and turn Bluetooth on. See the Using Keynote Remote with Bluetooth section below for more information.

2. Open your Keynote presentation on the device you'll use for the presentation.
3. Tap the Tools icon in the toolbar.
4. Tap Presentation Tools.
5. Tap Allow Remote Control.
6. Turn on Enable Remotes.
7. On the device you will use as the remote, open the Keynote app and tap the Keynote Remote icon in the toolbar of the presentation manager. If you're in a presentation, tap Presentations in the toolbar to open the presentation manager.
8. If this is the first attempt to link to this Keynote Remote, tap Continue. If not, tap the Devices button, and then tap "Add a Device."
9. On the device displaying the presentation, tap Link next to the name of the device that will control the presentation. The device name should appear in the Allow Remote Control menu that you had open.
10. Confirm that the four digit passcode that appears on the presentation device also appears on the controlling device. If the passcode matches, tap Confirm.
11. Tap Done on the presentation device to return to the presentation.

You can now control the slideshow on the presentation device by tapping Play on the controlling device. For instructions on using Keynote Remote once you have it linked, see the Using Keynote Remote section below. 

Once you've linked Keynote Remote to your computer or iOS device, follow these steps to control your slideshow with it.

1. If it's not already open, open your Keynote presentation on your Mac or presentation device.
2. On the Keynote Remote device, tap the Keynote Remote icon in the presentation manager toolbar. If you're in a presentation, tap Presentations in the toolbar to open the presentation manager. 
3. It may take a few seconds for your remote device to connect to your computer. Once it has, your remote device will display the Play button.
4. Tap Play.
5. Your slideshow will appear on your remote device. Swipe in either direction to move to the next or previous slide.
6. For more layout options, tap the Layout icon on your remote device to view these options:
   • Current: Shows the build/slide on your remote device that is being presented.
   • Next: Shows the build/slide on your remote device that will appear next in the presentation.
   • Current and Next: Shows both the current and next build/slide side by side.
   • Current and Notes: Shows the current build/slide and the notes for that slide side by side.
7. To end the slideshow, tap the X icon or swipe down with two fingers.

When a Wi-Fi connection is unavailable, you can use Keynote Remote with Bluetooth to control your Keynote slideshow from one iOS device to another (but not to a Mac). Slides may take longer to appear on Keynote Remote when connected via Bluetooth.