Monday, November 12 2012

Rooting Sanei N10 Deluxe on linux command line

The Sanei N10 Deluxe tablet is _potentially_ a good tablet. Unfortunately the original firmware is absolutely useless. To get rid of it the device has to be rooted and re-flashed with something more SANE(I) ;-)

Requirements:

1. the device itself - Sanei N10 Deluxe

2. usb cable

3. linux box with installed Android SDK

4. internet connection - for downloading AndroidRoot

The procedure below is based on bat file from AndroidRoot:

1. Download and unzip AndroidRoot

It contains some windows executables, a .bat file and 2 files that are important for linux users: "su" and "superuser.apk"

Copy those 2 files to your home directory (or any other, I assume they are in the home dir)

3. Switch on "USB Debugging" on the tablet. It's in Settings -> Developer Options

4. Connect the device and make sure it's detected by the system:

przemo@localhost:$lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 002: ID 8087:07da Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 010: ID 18d1:0003 Google Inc.

The last line show that the tablet is connected.

5. Make sure you have rights to access the device (adb command is part of Android SDK):

przemo@localhost:$~/android-sdk-linux/platform-tools/adb devices
List of devices attached
20080411    device

If there is no device check here

6. Go to Android SDK directory -> platform-tools. On my linux box it's:

cd ~/android-sdk-linux/platform-tools/

7. Now time to start rooting

./adb shell mv /data/local/tmp /data/local/tmp.bak
./adb shell ln -s /data /data/local/tmp
./adb reboot

8. Wait for the tablet to complete reboot and type:

./adb shell rm /data/local.prop > nul
./adb shell "echo \"ro.kernel.qemu=1\" > /data/local.prop"
./adb reboot

9. Again, wait for the tablet to complete reboot and confirm that we have root access:

./adb shell id

The result should be:

uid=0(root) gid=0(root)

10. Now we can install "su" (make sure correct location of "su" is used - that's the file from AndroidRoot):

./adb remount
./adb push ~/su /system/xbin/su
./adb shell chown 0.0 /system/xbin/su
./adb shell chmod 06755 /system/xbin/su

11. Revert the changes that gave us root access:

./adb shell rm /data/local.prop
./adb shell rm /data/local/tmp
./adb shell mv /data/local/tmp.bak /data/local/tmp

12. Install superuser.apk (same comment about location of apk file as for point 10)

./adb push ~/superuser.apk /system/app/superuser.apk

13. Reboot and enjoy rooted tablet:

./adb reboot

That's it - now the Sanei N10 Deluxe is ROOTED.

Wednesday, February 9 2011

Hello World, my first android application in 3 steps (CLI only)

The official android webpage suggests that Eclipse is the best tool for devloping. I tried really hard to set it up, but after 2 days, 6 IRC channels and many differen config switches tested I gave up. PermGen out of memory error finally won with my patience. Looks like my problems were caused by java virtual machine I tried to use, but it makes no difference at all - Eclipse was unusable. I decided to got the CLI way and I'm not dissapointed.

A few words of explanation: I'll show how to create a simple "Hello World" app using just one console (or terminal window), but it's much more convinient to use 2 or 3 of them to avoid changing directory all the time.

Three steps to my first application

1. Go to "tools" directory in android-sdk:
przemo@pldmachine ~$ cd ~/android/sdk/tools/
and type (in one line):

./android create project
--target android-8
--name Test
--path /home/users/przemo/workspace/Test
--activity TestActivity
--package com.android.test

przemo@pldmachine$ ./android create project --target android-8 --name Test --path /home/users/przemo/workspace/Test --activity TestActivity --package com.android.test
Created project directory: /home/users/przemo/workspace/Test
Created directory /home/users/przemo/workspace/Test/src/com/android/test
Added file /home/users/przemo/workspace/Test/src/com/android/test/TestActivity.java
Created directory /home/users/przemo/workspace/Test/res
Created directory /home/users/przemo/workspace/Test/bin
Created directory /home/users/przemo/workspace/Test/libs
Created directory /home/users/przemo/workspace/Test/res/values
Added file /home/users/przemo/workspace/Test/res/values/strings.xml
Created directory /home/users/przemo/workspace/Test/res/layout
Added file /home/users/przemo/workspace/Test/res/layout/main.xml
Created directory /home/users/przemo/workspace/Test/res/drawable-hdpi
Created directory /home/users/przemo/workspace/Test/res/drawable-mdpi
Created directory /home/users/przemo/workspace/Test/res/drawable-ldpi
Added file /home/users/przemo/workspace/Test/AndroidManifest.xml
Added file /home/users/przemo/workspace/Test/build.xml
Added file /home/users/przemo/workspace/Test/proguard.cfg

As you can see "android" did all the boring job of creating app skeleton for us.

2. Go to the application directory and compile it.

przemo@pldmachine$ cd ~/workspace/Test/
przemo@pldmachine$ ant debug

[removed compile output]
.. debug:
        echo Running zip align on final apk...
        echo Debug Package: /home/users/przemo/workspace/Test/bin/Test-debug.apk
BUILD SUCCESSFUL
Total time: 4 seconds
przemo@pldmachine ~/workspace/Test$

Those are only last few lines of a succesful build. Now we're ready to install the app

3. Go to "platform-tools" and upload the app to phone:

przemo@pldmachine$ cd ~/android/sdk/platform-tools/
przemo@pldmachine$ ./adb -d install /home/users/przemo/workspace/Test/bin/Test-debug.apk
*daemon not running. starting it now on port 5037 *
*daemon started successfully *
233 KB/s (13223 bytes in 0.055s) pkg: /data/local/tmp/Test-debug.apk Success
przemo@pldmachine$

Now you should see a new application named TestActivity in your phone. It doesn't do anything usefull, but that's my first android app!