niikoo/Android - Enable ADB from recovery.md

## Android - Enable ADB from recovery.md

      
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              Android - Enable ADB from recovery.md
            
          
    Android - Enable ADB from recovery

Credits to @TheOnlyAnil-@Firelord¹


Requirements:
a) stock recovery + rooted phone
b) custom recovery


Files changed:

/system/build.prop
/data/property/persist.sys.usb.config
/data/misc/adb/adb_keys


Enable ADB (1/3): enable USB debugging

same as "Settings >> Developer Opcions >> USB debugging" ON

Connect the device to Mac or PC in recovery mode.
Now open terminal/CMD in computer and go to platform-tools/. type and enter adb devices to check if the device is connected in recovery mode.
Now type adb shell mount data and adb shell mount system to mount the respective directories.
Get the persist.sys.usb.config file in your system using adb pull /data/property/persist.sys.usb.config /Your directory
Now open that file in a texteditor and edit it to mtp,adb and save.
Now push the file back in the device; adb push /your-directory/persist.sys.usb.config /data/property
Get the build.prop file; adb pull /system/build.prop /your-directory
Add these lines:

persist.service.adb.enable=1                                                    
persist.service.debuggable=1
persist.sys.usb.config=mtp,adb


Push build.prop back into the device; adb push /your-dir/build.prop /system/

Fast way

adb shell
mount data
echo -n 'mtp,adb' > /data/property/persist.sys.usb.config

Verify options are not present before do it: adb shell "grep 'persist.service.adb.enable' /system/build.prop"
adb shell
mount system
echo '' >> /system/build.prop
echo '# Enable ADB' >> /system/build.prop
echo 'persist.service.adb.enable=1' >> /system/build.prop 
echo 'persist.service.debuggable=1' >> /system/build.prop
echo 'persist.sys.usb.config=mtp,adb' >> /system/build.prop 

Enable ADB (2/3): RSA verification


For the RSA verification that you asked to bypass, I don't know whether it would work in your device, but it worked in my little experiment. In Lollipop, the ADB keys (after authorization) are saved in /data/misc/adb/adb_keys. Your private key is saved in computer. In Linux the directory location is $HOME/.android/. On Windows that usually translates to %USERPROFILE%.android, but keys might end up in C:\Windows\System32\config\systemprofile.android in some cases.

adb push ~/.android/adbkey.pub /data/misc/adb/adb_keys
Enable usb debugging in settings (3/3)

Change /data/system/users/0/settings_global.xml:
-<setting id="3338" name="adb_enabled" value="0" package="android" defaultValue="0" defaultSysSet="true" />
+<setting id="3338" name="adb_enabled" value="1" package="android" defaultValue="0" defaultSysSet="true" />
Bibliography

Footnotes


http://android.stackexchange.com/questions/120394/can-i-enable-usb-debugging-using-adb ↩