An Adaptation kit upgrade (AKU or Adaptation kit update) is a way of updating Microsoft's Windows Mobile.
It is a collection of updates, fixes and enhancements to the tools delivered to hardware device manufacturers to create or update devices based on a specific platform.
This term is used by Microsoft to designate the current update version for a particular embedded platform such as Windows Mobile which is used for Personal digital assistants and Smartphone devices. On the Windows Mobile platform the AKU is to Windows Mobile what a Service Pack is to Microsoft Windows.
Microsoft releases AKUs to allow device manufacturers with updates to create new products or fix issues with older products. These enhancements are usually not available to the consumer or end user unless released as a firmware update from the vendor.
landscape screen mode supportstart devices without a SIM cardchecking for incoming mail at defined intervalsfull-fledged SIM contacts supportadded fixed dialing numbersadded alarm clock indicator to today screenadded ability to send SMS while viewing call historyImproves support for many Bluetooth profiles, such as stereo headset (A2DP)Wi-Fi connectivity now displays more status information. Wi-Fi performance improved.official hard drive supportincreased screen rotation speedMessaging and Security Feature Pack (MSFP), including DirectPush email functionality and GZIP compressionInternet Explorer Mobile adds accelerated scrolling, Fast Back feature, support for compiled WML, WMLScript over HTTP, enhanced DOM standard and framesadded SMIME support for messagingadded wireless manager to turn wireless features on and offreplaced clock with battery status indicator in the upper right cornerdynamic switching between screen modes (landscape and portrait).ActiveSync improvements.boot speed improvements.allows user to choose clock or battery status indicator in the upper right corneradded support for PPP over USBdecreased boot timebug fixes.bug fixes.SmartDial from the Today screenadded ability to change dialing font color(up to 2x) for video clips played back in Windows Media Player.language provisioning (enabling local manufacturers to add as many languages to a device as its onboard memory can store)WiFi connection wizard (new Internet Sharing utility replaces Modem Link).WPA2 support for WiFiQuick start wizardsupport for 2nd display (for instance on phones with two displays)better SMS handlingBluetooth profile "Personal Area Network" (PAN) is added, and "Dial-Up Networking" (DUN) profile is removed.vCard contacts can be transferred via SMS.SIM card contacts are sorted by Name in general contacts list.IE now supports AJAXadded .Net Compact Framework 2.0added ability to save SMS to SIM cardadded support for SMS over GPRSupdated Bluetooth stack that opens up even more tethered connectivity optionsIncluded in the Samsung Omnia SCH-i910 (for Verizon Wireless) CF03 software upgrade [1]Included in the Samsung Saga SCH-i770 (for Verizon Wireless) CE07 software upgrade [2]One example: [3]IE Mobile upgraded to 6.12One example is listed in the ATT Tilt rom upgrade: [4]Latest and the last update for Windows Mobile from Microsoft. Released on Dec 2010. AKU Build 23148
AKU Build 23145
AKU Build 21840
AKU Versions for Windows Embedded Handheld
It is important to note that Windows Mobile is succeeded by Windows Phone in consumer electronics segment and Windows Embedded Handheld for industrial electronics. Windows Embedded Handheld starts with AKU 5.3.12. Windows Embedded Handheld is meant to carry on the Windows Mobile for rugged handhelds and is only a change in AKU over Windows Mobile 6.5. Unlike Windows Phone, WEH is compatible with WM 6.5.
AKU Build 29049
AKU Build 29036
AKU Build 29023