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January 24, 2014

. ROOT access Arnova 10c G3

Filed under: Uncategorized — admin @ 3:22 pm
  • Using synaptics manager or apt-get, get mtp-tools , and mtpfs
  • Plugin the arnova to the ubuntu box using USB cable makes it appear as ‘ARNOVA’ in /media . For this to work, it’s necessary to check the developper’s mode in the Arnova ’settings’ menu.
  • When plugged to the linux box, clicking on the Android robot (bottom right of the tablet’s screen ) and activate the USB storage mode. If you skip this step, the arnova won’t be seen by linux as being plugged
  • Download adt-bundle-linux-x86-20131030 or the corresponding version for your linux arch, from Android Developers zone . You need the ADB tool . http://developer.android.com/tools/help/adb.html
  • Download and unzip : superuser-xxx.zip , su-xxx.zip , and from /su , busybox executable. install in home directory of adb ( /sdk/platform-tools/ ) : busybox and unpack the 2 zips in the same home directory . files are created under /system/bin  and a newly created one : META-INF
  • We assume that the su executable is NOT in the /system/bin directory of the tablet. that’s the case for my arnova tablet 10cg3, purchased on december,2012.
  • Now time to use ADB..
  • from the console ./adb start-server
  • then ./adb devices
  • mine is listed like : 20110301    device
  • if you get ??????????? no permissions, try ./adb kill-server then ./adb start-server . A message should say that adb-server daemon is starting, on port 5037 ( tablet is with debug mode enabled, no need to have USB storage mode activated )
  • Now let’s type the following in the linux terminal:
  • ./adb root
  • ./adb remount
  • ./adb shell       (opens a shell in the tablet )
  • now you see root@android:/ #   :D
  • mount -o remount,rw -t rfs /dev/block/st19 /system ( moves the filesystem somewhere else for maintenance purposes )
  • exit (back to adb in console)
  • then
  • ./adb push busybox /system/bin
  • ./adb push su /system/bin/     ( at this point you should have a warning/error if your tablet’s directory already holds a ‘SU’ executable. if so, copy it somewhere else for safety before continuing )
  • ./adb push Superuser.apk /system/app
  • if everything is fine, you can check the file tranfert success by going back to the shell ( ./adb shell) and LS the /system/bin and /system/app directories of the tablet
  • while in the shell ,
  • # chmod 4755 /system/bin/busybox
  • # chmod 4755 /system/bin/su
  • # mount -o remount,ro -t rfs /dev/block/st19 /system ( moves back the filesystem )
  • # exit
  • back to adb :
  • ./adb reboot
Now the tablet reboots, and you have su rights if needed.
For example, using ConnectBot, open a session (LOCAL) , on the shell, type SU :
A popup windows asks for yes or no to allow SuperUser (root) connection, tap on YES : You’re now a root user.
Additional informations, and troubleshooting questions and answers can be found out there :
the ADB manipulations come from http://www.android-hilfe.de/arnova-10c-g3-forum/368218-how-arnova-10c-g3-mit-linux-rooten-auch-fuer-linux-anfaenger-geeignet-3.html after test and adaptation of these german posts.The original manipulations on this forum state that the SU executable is present in the /system/bin folder of the ARNOVA, but that was not my case.

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