破解app保护,macvim修改app后闪退

需求:
根据帖子http://bbs.iosre.com/t/tweak-app-app-tweak/438?source_topic_id=10062
用macvim修改app,iphone4 7系统可以打开,iphone6 8系统无法打开,打开闪退
app是PP助手下载的,用otool看下cryptid都是0,表示64位也解密成功
用crash reporter看没有日志
ldid -S试了没有提示,不知道成功失败,反正再打开还是闪退

**没啥用的日志:
Nov 10 11:52:41 Doraemon-Yu com.apple.xpc.launchd[1] (UIKitApplication:com.appstore.Abc[0xb0a7][2726]): Service exited due to signal: Killed: 9
Nov 10 11:52:41 Doraemon-Yu assertiond[116]: Unable to obtain a task name port right for pid 2726: (os/kern) failure (5)
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to register for exec notifications: No such process
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to obtain a task name port right for pid 2726: (os/kern) failure (5)
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to obtain a task name port right for <FBApplicationProcess: 0x16038d8e0; com.appstore.Abc; pid: 2726>
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to get short BSD proc info for 2726: No such process
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to get proc info for 2726: No such process
Nov 10 11:52:41 Doraemon-Yu assertiond[116]: Could not set priority of <BKNewProcess: 0x12f646c10; com.appstore.Abc; pid: 2726; hostpid: -1> to 1, priority: No such process
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to register for exec notifications: No such process
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to obtain a task name port right for pid 2726: (os/kern) failure (5)
Nov 10 11:52:41 Doraemon-Yu assertiond[116]: Could not set priority of <BKNewProcess: 0x12f646c10; com.appstore.Abc; pid: 2726; hostpid: -1> to 0, priority: No such process
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to obtain a task name port right for <FBApplicationProcess: 0x16038d8e0; com.appstore.Abc; pid: 2726>
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to get short BSD proc info for 2726: No such process
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Unable to get proc info for 2726: No such process
Nov 10 11:52:41 Doraemon-Yu locationd[110]: Gesture EnabledForTopCLient: 0, EnabledInDaemonSettings: 0
Nov 10 11:52:41 Doraemon-Yu SpringBoard[2059]: Application ‘UIKitApplication:com.appstore.Abc[0xb0a7]’ exited abnormally via signal.
Nov 10 11:52:41 Doraemon-Yu locationd[110]: Gesture EnabledForTopCLient: 0, EnabledInDaemonSettings: 0
**代码:
无代码
操作步骤:

** 任何其他描述:

** 环境:
iphone6 8.4