COBY KYROS MID9042-8 Workshop (Root, Dump, Restore)

5arid

Member
Nov 30, 2013
41
9

COBY KYROS MID9042-8


$Front.jpg


A. Specifications
Name : COBY KYROS MID9042-8
OS : Android 4.0 Ice Cream Sandwich
CPU : 1GHz Allwinner ARM Cortex A8
RAM : 1GB
LCD : 9 inches 1280 x 800
Internal storage : 8GB Flash
External storage : microSD (max 32GB)
Wi-Fi : 802.11b/g/n
Camera : 0.3MP

B. Disclaimer
Use these tutorials at your own risk!
These tutorials are only for MID9042 and nothing else!
I don't take any responsibility for bricking your tablet!
You have been warned!


C. Purpose of these tutorials
Most of these tutorials and tools are scattered around in the forum.
But some of them are hard to find while others are for linux users which are complicated for Windows users.
I just gathered them in one place and added my own exprience to them for future refrence.
For the following tutorials I suggest you to use Windows 7.
All credit for the tools goes to their authors, thanks to their hard work.
By the way english is not my native language, so if you find any grammatical mistake or even any technical mistake please remind me, I will correct it ASAP.

D. How to solve Boot Loop problem
Boot Loop is very common problem among tablets and it is caused by a variety of unknown reasons!
But most of the time it is caused by a corrupted data on the firmware or software of the tablet.
On this point the tablet gets stuck on the blue Android logo.
There are some solutions to fix this issue, so you should test them one by one :
*. Factory Reset
*. Installing permissions.zip or permissions_signed.zip from microSD
*. Installing a new stock ROM through CWM
*. Using LiveSuit as a last resort (Stay away from this tool as much as you can)
Follow the tutorial to find out how to use them

E. How to Enter "Android system recovery <3e>"
1. Back up your important data from the tablet if you can
2. Turn off the tablet completely and wait 10 seconds
3. Press and hold "power" and "+" for about 15 seconds
4. A green Android robot with a triangle exclamation appears, now you can release all the buttons
5. Push "+" to see the "Android system recovery <3e>" menu
6. In this menu you can use "-" for going down, "+" for going up, "power" for selection
7. To exit from "Android system recovery <3e>" select "reboot system now"
Note : Make sure the tablet has enough battery charge before begining
Note : While holding "power" and "+" for about 15 Seconds If you see the blue Android logo you fail on entering the recovery menu and you need to turn off the tablet and start from the beginning
Note : If after some trial and error you can't enter "Android system recovery <3e>", use "power" and "-" instead of "power" and "+"

F. How to perform Factory Reset
1. Back up your important data from the tablet if you can
2. Enter "Android system recovery <3e>" menu
3. By pushing "-" go down to "wipe data/factory reset"
4. Push "power" to select it
5. Go down to "YES" and select it and wait for the proccess to finish
6. select "reboot system now"

G. How to install ADB Driver
1. Back up your important data from the tablet
2. On the tablet go to Settings->Developer Options and enable USB debugging
3. Connect the tablet to the PC but don't turn on USB storage
4. Download and extract "Coby_Gen3_USB_Driver.zip" to your pc
5. Go to "Device Manager", you should see unknown driver of "Android" under "Other Devices"
6. To install the driver follow this :
Right Click --> Update Driver Software --> Browse my computer --> Let me pick --> Have Disk --> Browse --> Coby_Gen3_USB_Driver\Vista-Win7 --> android_winusb.inf --> Android ADB Interface --> Install
7. If you do it right you should see "Android ADB Interface" under "Android Phone" in the device manager
8. Reboot PC

H. How to Root
1. Back up your important data from the tablet
2. Perform factory reset and reboot the tablet
3. Make sure ADB Driver is installed correctly on the PC
4. Make sure USB debugging is enabled on the tablet
5. Connect the tablet to the PC but don't turn on USB storage
6. Download and extract "CobyADB.zip" to your PC
7. Navigate to CobyADB folder and run root_restore.bat
8. Type r and hit Enter
9. Type 7042 and hit Enter
10. Type y and hit Enter
11. During the process don't interrupt it and wait for it to finish
12. Type b and hit Enter to reboot the tablet
13. After reboot you will have a rooted tablet, don't test anything on it just go stright to dumping proccess first!

I. How to Dump
1. Make sure ADB Driver is installed correctly on the PC
2. Make sure "USB debugging" is enabled
3. Connect the tablet to the PC but don't turn on USB storage
4. Navigate to CobyADB folder and Run root_restore.bat
5. To select "Dump System Files" type d and hit Enter
6. To start the process type y and hit Enter
7. During the process don't interrupt it and wait for it to finish
8. Type y and hit Enter to reboot the tablet
9. Type q and hit Enter to close the utility
10. A "dump" folder is created inside of "CobyADB" folder
11. Check inside of "dump" folder you should see these files : system.tgz, recovery.img, bootloader.img, boot.img
12. These files are very important, so pack them all into a rar file and upload it somewhere so that you will never lose them
13. If you want to help the community post your download link here as it can save someone's tablet

J. How to Install ClockWorkMod Recovery (CWM)
1. Back up your important data from the tablet if you can
2. Boot into "Android system recovery <3e>"
3. Perform factory reset
4. Download and copy "9042_recovery_signed.zip" into a microSD and insert it into the tablet
5. Select "apply update from external storage" and install "9042_recovery_signed.zip" and wait for the process to finish
6. Select "reboot system now"
7. From now on "Android system recovery <3e>" is replaced by "CWM-based Recovery v6.0.2.8 9042 by Vampirefo"

K. How to Restore a ROM
1. Download one of the available ROMs and extract it somewhere on your PC or use your own stock ROM
2. You should see these files : system.tgz, recovery.img, bootloader.img, boot.img
3. Extract system.tgz
4. Delete recovery.img (of course keep a back up somewhere else)
5. Download and extract "META-INF.zip"
6. Pack META-INF ,system, bootloader.img, boot.img into a single zip file and rename it to MID9042.zip (Example)
7. Back up your important data from the tablet if you can
8. Boot into "ClockWorkMod Recovery"
9. Perform factory reset
10. Put your prepared ROM into a microSD and insert it into the tablet
11. Select "apply update from external storage" and install "MID9042.zip"
12. Go down to "YES" and select it
13. select "reboot system now"
Note : If you feel uncomfortable with preparing the ROM, you can download and install this "MID9042.Google.Play.Store.v1.0.by.5arid.zip" which is ready to install and has the "Google Play Store"

L. Available ROMs
joenarsu12
coby_kyros_9042_dump.zip - [Mirror Link]
Build Number : 20120828.130802

bfoley66
Coby_Kyros_MID9042-8.zip - [Mirror Link]
Build Number : 20120523.144753

Anthony0903
MID9042-8.zip - [Mirror Link]
Build Number : 20120523.144753

manueld64
9042-8_dump.zip - [Mirror Link]
Build Number : 20120523.144753

slash
dump_of_coby_mid9042.rar - [Mirror Link]
Build Number : 20120523.144753

leemarkpo
MID_9042.zip - [Mirror Link]
Build Number : 20120828.130802

M. LiveSuit the last resort
1. Stay away from this tool as it is badly infamous for bricking the tablets instead of repairing them!
2. Download "sun4i_crane_mid9042_120701_v2.img"
3. Download and extract livesuit 1.11.rar to your PC
4. Run LiveSuitPack_version_1.11_20120724_2.exe and install the driver
5. Check "Device Manager", you should see a new unknown driver "VID_1f3a_PID_efe8"
6. Run LiveSuit.exe and it asks you if you want to be guided through the process, select NO
7. Click on "Select IMG" and choose "sun4i_crane_mid9042_120701_v2.img"
8. Turn off the tablet completely
9. Press and hold "+", then connect the tablet to PC
10. Keep holding "+" and press "power" repeatedly every one second untill a popup massage shows on the PC (it should take about 10 seconds)
11. Now you can release the buttons
12. Choose "Yes" for performing forced firmware update
13. If you're sure choose "Yes" again
14. During the process don't interrupt it and wait for it to finish
Note : Flashing an inappropriate img brick your tablet completely so please think twice before using LiveSuit!

N. How to install Google Apps
1. Install and run "Root Explorer.apk"
2. Navigate to ROOT/system/app
3. On the top left hand you should see something like this "220MB used, 30MB free"
4. Delete the following files until you get at least 50MB free space :
aldiko-oem-2.00.151.apk
Browser.apk
Browser.odex
Calculator.apk
Calculator.odex
Calender.apk
Calender.odex
CalenderProvider.apk
CalenderProvider.odex
cobyyoutube-sign.apk
com.ut.emusic-sign.apk
Contacts.apk
Contacts.odex
ContactsProvider.apk
ContactsProvider.odex
DeskClock.apk
DeskClock.odex
DownloadProviderUi.apk
DownloadProviderUi.odex
Email.apk
Email.odex
es_file_explorer_v1_6_1_0.apk
ES_TaskManager.apk
Exchange.apk
Exchange.odex
Gallery2.apk
Gallery2.odex
GetJar_cobyusa_getjar_com_2011_09_09-sign.apk
LiveWallpapers.apk
LiveWallpapers.odex
LiveWallpapersPicker.apk
LiveWallpapersPicker.odex
Music.apk
Music.odex
MusicFX.apk
MusicFX.odex
Phone.apk
Phone.odex
QuickSearchBox.apk
QuickSearchBox.odex
TelephonyProvider.apk
TelephonyProvider.odex

5. Turn off the tablet
6. Boot into "ClockWorkMod Recovery"
7. Download and extract "gapps-ics-20120429-signed.zip" and put it into a microSD and insert it into the tablet
8. Select "install zip from sdcard" then "choose zip from sdcard" and install "gapps-ics-20120429-signed.zip"
9. Select "reboot system now"
10. After reboot you should have Play Store icon in your apps

O. How to install Modded Google Play Store
1. Run Root Explorer and navigate to ROOT/system/app and delete the following files to make some free space :
FaceLock.apk
GalleryGoogle.apk
GenieWidget.apk
GoogleCalendarSyncAdapter.apk
GoogleContactsSyncAdapter.apk
GoogleQuickSearchBox.apk
Talk.apk
VoiceSearch.apk

2. Connect the tablet to the internet
3. Run Play Store and add your google account
4. Install and run "Lucky Patcher.apk"
5. From "Toolbox" select "Install modded Google Play Store"
6. Select "Modded Google Play 4.1.6" and then hit "Install " button
7. After installation the tablet will reboot
8. Disconnect the tablet from the internet
9. Run Lucky Patcher and from "Toolbox" menu select "Test the modded GooglePlay"
10. If you do it right you should see this massage "Google Play is installed and working properly."

P. How to run Ubuntu on Android
1. Download "Ubuntu-1304-Small-v1.zip" and put it here : sdcard/ubuntu/ubuntu.img
2. Download and install "Android Terminal Emulator.apk"
3. Download and install "Android VNC Viewer.apk"
4. Download and install "Complete Linux Installer.apk"
5. Enable USB debugging on the tablet
6. Run Complete Linux Installer and go to Lunch
7. Select ubuntu if it is not selected
8. Hit edit config button and change the resolution to 1280x750 then hit back
9. Hit lunch, you will see the terminal running
10. Type "y" for the question which want to verify the hash of the img
11. Type "ubuntu" for password
12. If everything goes well you should see root@localhost:/#
13. Let the terminal runs and hit home button
14. Run Android VNC Viewer
15. Fill out these info : Nickname : yourname / Password : ubuntu / Address : localhost / Port : 5900
16. Change "Color Format" to 24-bit colour
17. Hit connect, and you should see the XDFL desktop of ubuntu
18. In settings select "input mode" and set it to "touchpad"
19. Slide your finger on the screen to control the mouse pointer
20. From settings choose "send text" to type anytext by using a virtual keyboard
 
Last edited:

jpdesuasido

Member
May 29, 2014
12
0
Hi sir is the "Restore a ROM" tutorial will work on COBY MID9740? PS: I have the needed files on it (dump files) and all I need is to make sure that it is safe :)

Thanks
 

5arid

Member
Nov 30, 2013
41
9
@ jpdesuasido
I have no idea but you should find a tutorial for your tablet
Read some sticky topics to find out
 

BlueZangetsu

Junior Member
Oct 22, 2014
4
0
I got to the rom step and decided to try and just use the pre-done rom that you provided however it causes my Kyros to get stuck in a boot loop
 

kevinthefixer

Member
Developer
Feb 10, 2014
94
24
Hopefully you did not try the livesuit thing. Either way read the stickies in the development threads.
 

Traveller

Administrator
Staff member
Jun 16, 2012
2,810
971
There is a link in the stickies which lead to instructions on how to restore a tablet using the system dump that should have been made during the rooting process. If you can't find it in the stickies you'll have to search in the development sub-forum.
 

Traveller

Administrator
Staff member
Jun 16, 2012
2,810
971
What vampirefo is talking about is the fact Coby routinely changed the insides of the tablet. Therefore your 9042 could be different from 5arid's device. There's no way to tell from the outside, so just looking at it does no good.
 

5arid

Member
Nov 30, 2013
41
9
@ BlueZangetsu
Please explain your situation exactly :
Do you have your own dump files?
Did your tablet have boot loop problem before?
Did you try to use other stock roms?
Why did you want to install a new rom anyway? To fix bootloop? To have Google play? For Fun?!
 

BlueZangetsu

Junior Member
Oct 22, 2014
4
0
@ BlueZangetsu
Please explain your situation exactly :
Do you have your own dump files?
Did your tablet have boot loop problem before?
Did you try to use other stock roms?
Why did you want to install a new rom anyway? To fix bootloop? To have Google play? For Fun?!
I was going through the steps you listed to root it and install a rom with Google Play store on it
I believe I do since I followed your steps to the T
It did not
I haven't yet because school has gotten hectic with exam week coming up
I wanted to have Google Play since the app store that came installed is shitty
 

5arid

Member
Nov 30, 2013
41
9
I am glad that you could dump your own stock rom
Please upload it somewhere and share it here
Then use your own dump to make the table up and running
For installing the Google Play just continue the tutorial
 
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