OK,Follow me
1. Uninstall the 2.x sdk,like this:
sudo /Developer/Library/uninstall-devtools --mode=all2
2. Install the latest sdk 3.0
3. Rename the Directory:”/Developer/Platforms”, such as “Platforms_new”,for Undelete this when uninstall sdk 3.0 later.
4. Uninstall sdk 3.0,like this:
sudo /Developer/Library/uninstall-devtools --mode=all
5. Install 2.x sdk with all templates
6. Copy the three Directories:bin,lib,libexec(Platforms_new/iPhoneOS.platform/Developer/usr) to the 2.x sdk’s same Directories,the system will alert you to override or not,choose yes
7. Copy Platforms_new/ iPhoneOS.platform/Developer/iPhoneOS3.0sdk to the 2.x sdk’s same Directories
8. Start XCode,Create a new View Based Application from template
9. When done,you can see Device-3.0|Debug in the list at upper-left,choose it,Build and Go
10. If you want some form the sdk 3.0 like API documentation,just copy the same location into the sdk 2.x
11. Enjoy
Created by
gaoning87@163.com
if you have trouble in understanding
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