1. 改动 ADB ROOT权限:

system/core$ git diff adb/adb.c

diff --git a/adb/adb.c b/adb/adb.c

index 99bea0f..d8fc090 100644

--- a/adb/adb.c

+++ b/adb/adb.c

@@ -1217,6 +1217,11 @@ static void drop_capabilities_bounding_set_if_needed() {

 

 static int should_drop_privileges() {

 #ifndef ALLOW_ADBD_ROOT

+       char value[PROPERTY_VALUE_MAX];

+       property_get("hw.hasusbadbroot", value, "");

+       if(strcmp(value, "1") == 0)

+       return 0;

+ else

     return 1;

 #else /* ALLOW_ADBD_ROOT */

     int secure = 0;

同一时候在system.prop中加入hw.hasusbadbroot=1

2.去掉adb 密钥校验：

ro.adb.secure=0

3.改动开发人员选项隐藏

packages/apps/Settings/src/com/android/settings/Settings.java

private void updateHeaderList(List<Header> target) {

-        final boolean showDev = mDevelopmentPreferences.getBoolean(

-                DevelopmentSettings.PREF_SHOW,

-                android.os.Build.TYPE.equals("eng"));

-        int i = 0;

+//        final boolean showDev = mDevelopmentPreferences.getBoolean(

+//                DevelopmentSettings.PREF_SHOW,

+//                android.os.Build.TYPE.equals("eng")); //samjiang modify

+               final boolean showDev = true; 

+               int i = 0;

 

         final UserManager um = (UserManager) getSystemService(Context.USER_SERVICE);

         mHeaderIndexMap.clear();

4.USB调试默认打开：

@@ -272,7 +272,7 @@ for these).

         <li>Installs APKs according to the product definition files; tags

             are ignored for APK modules.

         <li><code>ro.secure=1</code>

-        <li><code>ro.debuggable=0</code>

+        <li><code>ro.debuggable=1</code>

         <li><code>adb</code> is disabled by default.

     </td>

 </tr>

"<code>make user</code>"

        <p>

        This is the flavor intended to be the final release bits.

        <ul>

        <li>Installs modules tagged with <code>shell_</code>$(TARGET_SHELL) and <code>user</code>.

        <li>Installs non-APK modules that have no tags specified.

        <li>Installs APKs according to the product definition files; tags

            are ignored for APK modules.

        <li><code>ro.secure=1</code>

        <li><code>ro.debuggable=1</code>

        <li><code>adb</code> is disabled by default.

    </td>

</tr>

<tr>

    <td>

@@ -350,7 +350,7 @@ ifeq (true,$(strip $(enable_target_debugging)))

   INCLUDE_TEST_OTA_KEYS := true

 else # !enable_target_debugging

   # Target is less debuggable and adbd is off by default

-  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=0

+  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1

 endif # !enable_target_debugging