〖Android〗Nexus 7 flo (razor) 刷入Recovery/CM-11.0后卡在开机动画的解决方法

操作日志：

起因：Nexus 7 flo 华硕平板，刷了一个CWM Recovery之后变成了砖机；

尝试1：使用CWM Recovery清除数据，开机失败

尝试2：刷入CM 11 Snapshot的zip卡刷包，并使用Recovery清除数据，开机失败

尝试3：刷入CM 11 eng自己编译的版本，并使用Recovery清除数据，开机失败

尝试4：fastboot flash boot /path/to/boot.img，并刷入 CM 11 eng自己编译的版本，并Recovery清除数据，开机失败

尝试5：使用Logcat抓日志，输出如下

 1 D/AndroidRuntime(  532): >>>>>> AndroidRuntime START com.android.internal.os.ZygoteInit <<<<<<
 2 D/AndroidRuntime(  532): CheckJNI is ON
 3 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory  4 I/dalvikvm(  532): Unable to open or create cache for /system/framework/core.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
 5 D/dalvikvm(  532): Unable to process classpath element '/system/framework/core.jar'
 6 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
 7 I/dalvikvm(  532): Unable to open or create cache for /system/framework/conscrypt.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
 8 D/dalvikvm(  532): Unable to process classpath element '/system/framework/conscrypt.jar'
 9 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
10 I/dalvikvm(  532): Unable to open or create cache for /system/framework/okhttp.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
11 D/dalvikvm(  532): Unable to process classpath element '/system/framework/okhttp.jar'
12 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
13 I/dalvikvm(  532): Unable to open or create cache for /system/framework/core-junit.jar (/data/dalvik-cache/system@framework@core-[email protected])
14 D/dalvikvm(  532): Unable to process classpath element '/system/framework/core-junit.jar'
15 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
16 I/dalvikvm(  532): Unable to open or create cache for /system/framework/bouncycastle.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
17 D/dalvikvm(  532): Unable to process classpath element '/system/framework/bouncycastle.jar'
18 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
19 I/dalvikvm(  532): Unable to open or create cache for /system/framework/ext.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
20 D/dalvikvm(  532): Unable to process classpath element '/system/framework/ext.jar'
21 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
22 I/dalvikvm(  532): Unable to open or create cache for /system/framework/framework.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
23 D/dalvikvm(  532): Unable to process classpath element '/system/framework/framework.jar'
24 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
25 I/dalvikvm(  532): Unable to open or create cache for /system/framework/framework2.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
26 D/dalvikvm(  532): Unable to process classpath element '/system/framework/framework2.jar'
27 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
28 I/dalvikvm(  532): Unable to open or create cache for /system/framework/telephony-common.jar (/data/dalvik-cache/system@framework@telephony-[email protected])
29 D/dalvikvm(  532): Unable to process classpath element '/system/framework/telephony-common.jar'
30 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
31 I/dalvikvm(  532): Unable to open or create cache for /system/framework/voip-common.jar (/data/dalvik-cache/system@framework@voip-[email protected])
32 D/dalvikvm(  532): Unable to process classpath element '/system/framework/voip-common.jar'
33 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
34 I/dalvikvm(  532): Unable to open or create cache for /system/framework/mms-common.jar (/data/dalvik-cache/system@framework@mms-[email protected])
35 D/dalvikvm(  532): Unable to process classpath element '/system/framework/mms-common.jar'
36 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
37 I/dalvikvm(  532): Unable to open or create cache for /system/framework/android.policy.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
38 D/dalvikvm(  532): Unable to process classpath element '/system/framework/android.policy.jar'
39 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
40 I/dalvikvm(  532): Unable to open or create cache for /system/framework/services.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
41 D/dalvikvm(  532): Unable to process classpath element '/system/framework/services.jar'
42 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
43 I/dalvikvm(  532): Unable to open or create cache for /system/framework/apache-xml.jar (/data/dalvik-cache/system@framework@apache-[email protected])
44 D/dalvikvm(  532): Unable to process classpath element '/system/framework/apache-xml.jar'
45 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
46 I/dalvikvm(  532): Unable to open or create cache for /system/framework/webviewchromium.jar (/data/dalvik-cache/system@[email protected]@classes.dex)
47 D/dalvikvm(  532): Unable to process classpath element '/system/framework/webviewchromium.jar'
48 E/dalvikvm(  532): Could not stat dex cache directory '/data/dalvik-cache': No such file or directory
49 I/dalvikvm(  532): Unable to open or create cache for /system/framework/telephony-msim.jar (/data/dalvik-cache/system@framework@telephony-[email protected])
50 D/dalvikvm(  532): Unable to process classpath element '/system/framework/telephony-msim.jar'
51 E/dalvikvm(  532): No valid entries found in bootclasspath
52 '/system/framework/core.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/framework2.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/apache-xml.jar:/system/framework/webviewchromium.jar:/system/framework/telephony-msim.jar'
53 E/dalvikvm(  532): VM aborting
54 F/libc    (  532): Fatal signal 6 (SIGABRT) at 0x00000214 (code=-6), thread 532 (zygote)
55 I/ServiceManager(  180): service 'media.audio_flinger' died
56 I/ServiceManager(  180): service 'media.player' died
57 I/ServiceManager(  180): service 'media.camera' died

　　这理应是数据没有清除完成导致的，于是 Google下，尝试使用 fastboot -w 来清除数据，最后成功开机！

 

小结，Nexus 7 此类问题解决方法(黄背景的是重点，前两步可选)：

　　adb sideload /media/Source/CyanogenMod/out/cm-11.0/target/product/flo/cm-11-20141224-UNOFFICIAL-flo.zip 

　　fastboot flash boot /media/Source/CyanogenMod/out/cm-11.0/target/product/flo/boot.img

　　fastboot -w