我在iPhone iOS 5.1.0上安装了我的应用程序。我将设备升级到iOS 5.1.1并尝试运行相同的已安装应用。 点击应用程序图标后，它崩溃了。严格删除应用程序并重新安装它再次解决了问题，但我的应用程序在应用程序商店上运行，用户面临iOS升级问题。要求他们删除并重新安装应用程序不是解决问题的方法，可以在下次iOS升级时再次出现。
查询： 1. iOS更新如何影响已安装的应用程序以及可能导致崩溃的原因。 2.我应该考虑哪些方面来解决这个问题。 3.使用Keychain访问来存储帐户信息。 任何建议都将不胜感激。
Incident Identifier: 4DF5A263-B11A-451E-BF05-C447AE33FF61
CrashReporter Key: 7ee0f38606f406732267196b0ef0ac2f4f221477
Hardware Model: iPhone3,1
Process: [1105]
Path: /var/mobile/Applications/86979833-DACF-4D2E-B6E6-714C55038576/Test.app/Test
Identifier: Test
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2012-05-15 15:47:33.364 -0700
OS Version: iPhone OS 5.1.1 (9B206)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread: 2
Last Exception Backtrace:
(0x376bb88f 0x353c0259 0x376bea9b 0x376bd915 0x37618650 0x89fbd 0x8d90f 0x8d75d 0x87f41 0x37f57c29 0x37eaf6d9 0x37eaf6a3 0x37eaf5c5 0x373537f5 0x373484a5 0x37348599 0x37348599 0x373481a3 0x373480d9 0x3768fad3 0x3768f29f 0x3768e045 0x376114a5 0x3761136d 0x33dd0439 0x313bdcd5 0x29ef 0x29a8)
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 libsystem_kernel.dylib 0x31872660 0x31861000 + 71264
1 libsystem_c.dylib 0x33f964da 0x33f22000 + 476378
2 libsystem_c.dylib 0x33f683a0 0x33f22000 + 287648
3 libsystem_c.dylib 0x33f682b6 0x33f22000 + 287414
4 libc++abi.dylib 0x36df5f64 0x36def000 + 28516
5 libc++abi.dylib 0x36df3346 0x36def000 + 17222
6 libobjc.A.dylib 0x353c0350 0x353b7000 + 37712
7 libc++abi.dylib 0x36df33be 0x36def000 + 17342
8 libc++abi.dylib 0x36df344a 0x36def000 + 17482
9 libc++abi.dylib 0x36df481e 0x36def000 + 22558
10 libobjc.A.dylib 0x353c02a2 0x353b7000 + 37538
11 CoreFoundation 0x37611506 0x37602000 + 62726
12 CoreFoundation 0x37611366 0x37602000 + 62310
13 GraphicsServices 0x33dd0432 0x33dcc000 + 17458
14 UIKit 0x313bdcce 0x3138c000 + 203982
15 Test 0x000029e8 0x1000 + 6632
16 Test 0x000029a0 0x1000 + 6560
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x318623a8 0x31861000 + 5032
1 libdispatch.dylib 0x307e7ea4 0x307db000 + 52900
2 libdispatch.dylib 0x307e7bc2 0x307db000 + 52162
Thread 2 Crashed:
0 libsystem_kernel.dylib 0x31872cd4 0x31861000 + 72916
1 libsystem_c.dylib 0x33f2af36 0x33f22000 + 36662
2 libsystem_c.dylib 0x33f2acc8 0x33f22000 + 36040
Thread 3 name: WebThread
Thread 3:
0 libsystem_kernel.dylib 0x31862004 0x31861000 + 4100
1 libsystem_kernel.dylib 0x318621fa 0x31861000 + 4602
2 CoreFoundation 0x3768f3ec 0x37602000 + 578540
3 CoreFoundation 0x3768e124 0x37602000 + 573732
4 CoreFoundation 0x3761149e 0x37602000 + 62622
5 CoreFoundation 0x37611366 0x37602000 + 62310
6 WebCore 0x32fbac9c 0x32f11000 + 695452
7 libsystem_c.dylib 0x33f3072e 0x33f22000 + 59182
8 libsystem_c.dylib 0x33f305e8 0x33f22000 + 58856
Thread 4:
0 libsystem_kernel.dylib 0x31872cd4 0x31861000 + 72916
1 libsystem_c.dylib 0x33f2af36 0x33f22000 + 36662
2 libsystem_c.dylib 0x33f2acc8 0x33f22000 + 36040
Thread 5 name: com.apple.NSURLConnectionLoader
Thread 5:
0 libsystem_kernel.dylib 0x31862004 0x31861000 + 4100
1 libsystem_kernel.dylib 0x318621fa 0x31861000 + 4602
2 CoreFoundation 0x3768f3ec 0x37602000 + 578540
3 CoreFoundation 0x3768e124 0x37602000 + 573732
4 CoreFoundation 0x3761149e 0x37602000 + 62622
5 CoreFoundation 0x37611366 0x37602000 + 62310
6 Foundation 0x37ea1bb2 0x37e91000 + 68530
7 Foundation 0x37ea1a7a 0x37e91000 + 68218
8 Foundation 0x37f3558a 0x37e91000 + 673162
9 libsystem_c.dylib 0x33f3072e 0x33f22000 + 59182
10 libsystem_c.dylib 0x33f305e8 0x33f22000 + 58856
Thread 6 name: com.apple.CFSocket.private
Thread 6:
0 libsystem_kernel.dylib 0x31872570 0x31861000 + 71024
1 CoreFoundation 0x3769363a 0x37602000 + 595514
2 libsystem_c.dylib 0x33f3072e 0x33f22000 + 59182
3 libsystem_c.dylib 0x33f305e8 0x33f22000 + 58856
Thread 7:
0 libsystem_kernel.dylib 0x31872cd4 0x31861000 + 72916
1 libsystem_c.dylib 0x33f2af36 0x33f22000 + 36662
2 libsystem_c.dylib 0x33f2acc8 0x33f22000 + 36040
Thread 8:
0 libsystem_kernel.dylib 0x31872cd4 0x31861000 + 72916
1 libsystem_c.dylib 0x33f2af36 0x33f22000 + 36662
2 libsystem_c.dylib 0x33f2acc8 0x33f22000 + 36040
Thread 2 crashed with ARM Thread State:
r0: 0x00000004 r1: 0x00000000 r2: 0x00000000 r3: 0x00000000
r4: 0x00980680 r5: 0x0016f428 r6: 0x2ffaf000 r7: 0x2ffaefe0
r8: 0x3f12ad30 r9: 0x00000001 r10: 0x3f12ad50 r11: 0x00000000
ip: 0x00000170 sp: 0x2ffaefc0 lr: 0x33f2af3d pc: 0x31872cd4
cpsr: 0x40000010