Upgrade Unity5.5 Xcode Build Issue

Xcode:8.2 Unity:5.5.0P2

i'm trying to upgrade version from 5.4.1p1 to 5.5.0p2 , When I do and then open my project got some error log.

error CS0012: The type System.Data.Common.DbConnection' is defined in an assembly that is not referenced. Consider adding a reference to assembly `System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089

I used Sqlite in the project, in the 5.4.1 version or even before the version is to build a normal upgrade after experiencing this issue.

I copy /Applications/Unity/Unity.app/Contents/Mono/lib/mono/unity/System.Data.dll and Mono.Data.Sqlite.dll to Plugin , I fixed the issue , it's work , But in the 5.5 version before I did not add the System.Data.dll file is working properly.

When I export the project to xcode, build Xcode got new error log.

xxx/Unity_IOS/Classes/Unity/UnityTrampolineCompatibility.h:4:10: 'UnityPrefix.h' file not found ,xxxx/Unity_IOS/Classes/Unity/MetalHelper.mm:1:10: In file included from /xxx/Unity_IOS/Classes/Unity/MetalHelper.mm:1:

I see the Unity_IOS/Classes folder to update a lot of files.

Do you have any solution？