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ClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288

 Please donate to support OMA and CrewRKTablets firmware work, thank you !

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Arnova 7C G3 DEV/FIRMWARE TOPIC
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globula_neagra
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2013/02/26 - 19:12
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Starting from today i will make available most of the stuff that you need to get this tablet working with google play, back`up it, cwm, etc.

It will be also a learning topic for me, and for others that have things to share.

Please do not steal my work and attributed it to yourself, someone already did this and that is the reason for which i have not release the stuff that i did, which where finished somewhere in august-september 2012.
Always inform me if you want to share something on another website if it is my work involved.

NOW AVAILABLE THE FIRST CUSTOM FIRMWARE

Android OS version : 4.0.3
Device : msm7630_fw8930
Model : AN7CG3
ROM Name : IML74K SW:V0.4.8.0T01-user.release.20120806.173818
Rooted (Superuser app + su) : YES
Rooted (unsecured boot.img) : YES
BusyBox installed : YES
BusyBox run-parts support : YES
Nano text editor installed : YES
Bash shell support : YES
/system/framework is deodexed : YES
/system/app is deodexed : YES
ROM will wipe all data : YES
Custom Boot Animation : YES
Full GAPPS Integration: YES

Known Issues
the wipper apk has some crashes when your first start-up the tablet, but after that it should stabilize.
the first boot takes longer (well, this is something normal)

What do you need ?
-brain :)
The CWM recovery

How to flash ?
flash the cwm recovery to your tablet
put the firmware on the sd card( NOT THE INTERNAL SD CARD, THE EXTERNAL ONE)
either use adb reboot recovery or go to settings/about tablet/system updates
flash the firmware from cwm

Take in account that the firmware will erase everything that you have on the tablet !!!

DOWNLOAD
http://globula.arctablet.com/AN7CG3/ARNOVA7CG3_V1.zip

WHAT YOU SHOULD DO BEFORE YOU FLASH THIS FIRMWARE !!!
-back-up your tablet using the method from bellow because there is a chance in getting an unresponsive touch-screen !!!
-when I say back-up I am referring that you should dump the system and the boot partition !!!
-I am not responsible for any bricks

REMEMBER, FIRST BACK~UP AND THEN FLASH

The following users say thank you to globula_neagra for this useful post:

admin, arnova_7c_G3_root, Lothringer, cuneiform, herzenston
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globula_neagra
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2013/02/26 - 19:12
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Rooting Method

You can use this root tool
http://globula.arctablet.com/Arnova%20Tools/Arnova_Root_Tool.rar

What do you need ?
Superoneclick to install the add/usb debugging drivers
The above tool

The tool works also on Archos Cobalt.

ADB DRIVERS DL LINK
http://www.mediafire.com/?462mlh16jdlkkwl

Updated the drivers for Arnova 7C G3 and ARCHOS Cobalt

The following users say thank you to globula_neagra for this useful post:

arnova_7c_G3_root, Lothringer, cuneiform
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globula_neagra
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How the tablet is structured in terms of file system, partitions and how to back`up the tablet.

Mount Points

mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/mmcblk0p12 /system ext4 ro,relatime,user_xattr,barrier=1,data=ordered
0 0
/dev/block/mmcblk0p13 /data ext4 rw,nosuid,nodev,relatime,user_xattr,barrier=1,d
ata=ordered,noauto_da_alloc 0 0
/dev/block/mmcblk0p14 /persist ext4 rw,nosuid,nodev,relatime,user_xattr,barrier=
1,data=ordered 0 0
/dev/block/mmcblk0p15 /cache ext4 rw,nosuid,nodev,relatime,user_xattr,barrier=1,
data=ordered 0 0
/dev/block/mmcblk0p17 /content ext4 rw,nosuid,nodev,relatime,user_xattr,barrier=
1,data=ordered 0 0
/dev/block/vold/179:20 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,
uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utim e=0020,codepage=cp437,iocharse
t=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:20 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,rela
time,uid=1000,gid=1015,fmask=0702,dmask=0702,allow _utime=0020,codepage=cp437,ioc
harset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0
/dev/block/vold/179:97 /mnt/external_sd vfat rw,dirsync,nosuid,nodev,noexec,rela
time,uid=1000,gid=1015,fmask=0702,dmask=0702,allow _utime=0020,codepage=cp437,ioc
harset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0

Checking the size of the mount points and other partitions

shell@android:/ # df
df
Filesystem Size Used Free Blksize
/dev 194M 48K 194M 4096
/mnt/asec 194M 0K 194M 4096
/mnt/obb 194M 0K 194M 4096
/system 295M 223M 71M 4096
/data 393M 73M 320M 4096
/persist 4M 1M 3M 1024
/cache 196M 4M 192M 4096
/content 17M 13M 3M 4096
/mnt/sdcard 2G 1M 2G 4096
/mnt/secure/asec 2G 1M 2G 4096
/mnt/external_sd 3G 2G 1G 32768

Checking how many partitions does the tablet have

shell@android:/ # ls /dev/block/mmcblk*
ls /dev/block/mmcblk*
/dev/block/mmcblk0
/dev/block/mmcblk0boot0
/dev/block/mmcblk0boot1
/dev/block/mmcblk0p1
/dev/block/mmcblk0p10
/dev/block/mmcblk0p11
/dev/block/mmcblk0p12
/dev/block/mmcblk0p13
/dev/block/mmcblk0p14
/dev/block/mmcblk0p15
/dev/block/mmcblk0p16
/dev/block/mmcblk0p17
/dev/block/mmcblk0p18
/dev/block/mmcblk0p19
/dev/block/mmcblk0p2
/dev/block/mmcblk0p20
/dev/block/mmcblk0p3
/dev/block/mmcblk0p4
/dev/block/mmcblk0p5
/dev/block/mmcblk0p6
/dev/block/mmcblk0p7
/dev/block/mmcblk0p8
/dev/block/mmcblk0p9
/dev/block/mmcblk1
/dev/block/mmcblk1p1

Which partitions interest us as developers/users
/dev/block/mmcblk0p8
-this is the boot.img partition

/dev/block/mmcblk0p16
-this is the recovery.img partition

/dev/block/mmcblk0p12
-this is the system.img partition.

You will find how to dump the above partitions in the next post

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globula_neagra
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2013/02/26 - 19:14
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Dumping an re-flashing the modified firmware back to the tablet.

The Arnova 7C G3 used an ext4 file system for the system.img, therefore this can be mounted/re-sized/edited in a Linux environment.

As i said in the post from above we need to dump first the requiered files from the tablet
What i need:
-rooted tablet
-usb debugging working
-adb shell

What command to we use:
shell@android:/ # dd if=/dev/block/mmcblk0p8 of=/sdcard/boot.img bs=4096
dd if=/dev/block/mmcblk0p8 of=/sdcard/bootmmc8.img bs=4096
2560+0 records in
2560+0 records out
10485760 bytes transferred in 0.461 secs (22745683 bytes/sec)

This is for the boot.img, you can sort out the others, the principle is the same.
Having dumped the boot.img we can edit it, the easiest way, is to use dsixda kitchen (you can google this one)

This tablet is more special in terms of re-flashing back the system.img
1) The dumped system.img has a size of 300 Mb
2) The actual size of the image that you can flash using fastboot is arround 250 Mb
3)Name the system image system.img

To overcome this we will use the fallowing tutorial:

Let`s assume that you dumped the system.img from your own device and you want to add something to it.
We will create a new system.img and we will name it system_new.img, the size will be 240 Mb.

Step 1
Linux Machine (I used Ubuntu)
We prepare the the directories and copy the system.img in the folder in which we will work.
mkdir system (here we will mount the old system.img
mkdir system_new (here we will mount the system_new.img)

Step 2 – Creation of the actual EXT4.img
dd if=/dev/zero of=system_new.img bs=4k count=60000
Translation of the terms,
bs =blocksize, 4k= the size of the block`s which in this case are 4kb
count=60000, the number of block`s, in our case will result an image of 240 Mb.
The blocksize can be 1k/2k/4k/16k
To get the exact size of the image that you create use simple maths.
60000 * 4 = 240000

Step 3 Formating the system_new.img with EXT4
mkfs.ext4 system_new.img
It will be a question where you will select yes (Y)
We override the file system check (If you don`t do this, the image will not work)
tune2fs -c0 -i0 system_new.img

Step 4 We mount the ext4 partition in the directories that we previous created.
mount -o loop system_new.img system_new/
mount -o loop system.img system/

Step 5 We copy the content from the old system.img in the system_new.img
cp -v -r -p system/* system_new/
We sync the files
sync

Step 6 Unmounting the partitons.
umount system_new/
umount system/

Step 7 Enjoy your new ext4 system.img

Tips:
If you are using Ubuntu just type
sudo su
And you will be root and no more sudo at each command.
You can add new files in the new created system.img but you need to set the permissions and ownership properply, otherwise it will not work.


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globula_neagra
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2013/02/26 - 19:32
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CWM RECOVERY

http://www.mediafire.com/?wmv6969hm60ty0g

Way to flash :

Reboot the device in fastboot mode:
-either using adb reboot bootloader
-either shutt down the tablet and pressing the power and volume key - in the same time
- THE SCREEN WILL BE BLACK WHEN THE TABLET IS IN FASTBOOT MODE

In fastboot we check if the tablet is in fastboot mode
fastboot devices
fastboot flash recovery

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globula_neagra
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2013/02/26 - 19:32
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Reserved

The following users say thank you to globula_neagra for this useful post:

tom.fon87
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klerker
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2013/03/22 - 18:10
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Could you please provide us with a dump of 7C G3 Firmware?

 

Would it eventually work for 7C G2 because of similar hardware?

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globula_neagra
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2013/03/22 - 18:55
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No, it will not work on the 7c g2, it is totally different hardware, so even if i provide a dump it will not help you.
Tough the kernel for the 7c g2 has been released, if you want to try something, that should be your starting point.

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cuneiform
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2013/04/18 - 09:53
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Suppose, we need the modified firmware without going into details.

 

Then, someone can do replacing the system for us. That's all we need.I have neither any Linux system installed nor any idea of it.The problem is either to do some simple steps in replacing the useless system or to return the  the tablet back to the store asap.Most of us even do not understand finely the terms you are operating to go into details.

I am not a service man, but I have rooted several tablets so far. Maybe, I will be able to replace the useless system. I do not want to steal results of your work, and I will not publish them anywhere. You may individually give them over per PM to us. 

But you have to indicate that that will be an individual process if you do not want to make it public and to somehow guarantee that the mod. firmware will work though being unproven by the internet community. A piece of risk will still be remaining, and we shall be aware of it.  

 

 

 

 

 

 

 

 

 

 

 

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globula_neagra
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2013/04/18 - 15:47
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I opted for releasing this type of help because i had 3 cases till now where people ended up with unresponsive touch screens (i managed to solve two of them). I did not found yet a cause of this issue, i know for sure that they are 2 version of 7c g3, each one has a different touch controller, and in one case this was the main issue
Those 3 cases had my 100 percent support(i flashed around seven 7cg3 tablets till now), i helped via teamviewer, i showed them how to do it, what to do and so on, but, i can not continue doing this because is very time consuming, to make an image of what means time consuming, it was taking between 30 minutes and 3 hours.

Now, i decided to show the people on how to obtain root, i made available a CWM recovery (which can be used to flash GAPPS, therefore have market ?!?!?!). So i did my best considering that i was trying to avoid any other unusable tablets because of a non working touch screen.

I did the above guide available, so that people can dump their firmware, and in case if something happens, they will have back-up.
My dump does not work on all the 7c g3.

I hope you will understand where i am getting with this.

I will make a new dump of my system partition and post it somewhere in the weekend.
(My system has full market, full google integration)
This dump can be used on your own risk, i can not guarantee that it will work (it will work but it can generate an unresponsive screen and after that you will be able to use the tablet only with a mouse)

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globula_neagra
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2013/04/18 - 21:57
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Updated post number 2 with adb drivers for 7c g3 and archos cobalt.

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globula_neagra
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2013/04/20 - 18:46
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The new room will have the followings:

Android OS version : 4.0.3
Device : msm7630_fw8930
Model : AN7CG3
ROM Name : IML74K SW:V0.4.8.0T01-user.release.20120806.173818
Rooted (Superuser app + su) : YES
Rooted (unsecured boot.img) : YES
BusyBox installed : YES
BusyBox run-parts support : YES
Nano text editor installed : YES
Bash shell support : YES
/system/framework is deodexed : YES
/system/app is deodexed : YES
ROM will wipe all data : YES

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globula_neagra
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2013/04/20 - 23:44
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Updated first post with download link for the firmware.

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hacko
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2013/04/23 - 11:36
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That CWM doesn't work, when i try to enter, reboot to normal boot.

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globula_neagra
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2013/04/23 - 12:32
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You are the second that reports this, i need to have a look on what is happening.

In the end if i don`t find a solution i will provide a low level reflashing tool.

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