to update Andrioid SDK Tools to revision 15

According to http://developer.android.com/sdk/android-4.0.3.html

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The Android 4.0.3 API is assigned an integer identifier—15—that is stored in the system itself. This identifier, called the "API level", allows the system to correctly determine whether an application is compatible with the system, prior to installing the application.

To use APIs introduced in Android 4.0.3 in your application, you need compile the application against an Android platform that supports API level 15 or higher. Depending on your needs, you might also need to add anandroid:minSdkVersion="15" attribute to the<uses-sdk>element.

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Where to update?
On installed UDE (中國移動開發者社區統一開發環境) -> Window-> Android SDK and AVD Manager

Updating info as follows,

Package Description
Android SDK Tools, revision 15

This update will replace revision 10 with revision 15.

Dependencies
Installing this package also requires installing:
- Android SDK Platform-tools, revision 9

Archive Description
Archive for Windows
Size: 32 MiB
SHA1: 71dcd1e6e95a83b85118fc3fb72a5d9589b8022d

Site
Android Repository (dl-ssl.google.com)

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After update, I cannot open previous projects successfully. Now (2/17 12:17) need to figure out how to fix it .

to install a new UDE (中國移動開發者社區統一開發環境) under F: drive,
so I will have two sets, one is under c:/CMCC and another is under f:/CMCC

 Certain issue here http://developer.android.com/sdk/eclipse-adt.html