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[TUT] Root Archos 80 Cobalt 4.0.4

OP gavroche

26th December 2012, 04:56 PM   |  #1  
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Here is the guide and tools to rooting the Archos 80 Cobalt 8" tablet running ICS 4.0.4.

At the moment there are no custom roms for this device and any other roms for Archos devices will result in a soft-brick.

The rooting procedure is pretty simple, if you have any problems just ask.

----------- Rooting Stock ICS 4.0.4 -------------
1) Download and unpack the attached archos_80_cobalt_root.zip

2) Ensure sure ADB is enabled on your device (Settings -> Developer Options -> USB debugging [tick] )

3) Install the ADB driver (included)

4) Run RunMe.bat and select option 1

5) Check on device, when asked to restore, press the "Restore my data" button.


----------- Recovering "Bricked" Achos 80 Cobalt to Stock ICS 4.0.4 -------------
1) Download and unpack cobalt_recovery.zip from HERE

2) Plug in AC adapter (not USB cable) and power off device

3) Hold down Volume-Down button while plugging in USB cable, keep Volume-Down pressed for 10 seconds

4) Install the driver for "unknown device" in device manager, the driver is included in cobalt_recovery.zip

5) Start RKAndroidTool and press "flash rom" - do not select any of the tick boxes unless you need to restore custom images or restore userdata & cache

6) It will take about 5 minutes for the device to recover and should automatically boot to the welcome wizard


-------- Clockwork Recovery ---------

Thanks to 900supersport at freaktab.com he has built a signed kernel to allow booting CWM. I have attached the recovery too to allow you to install CWM. Use the same guide above but use archos_80_cobalt_CWM.zip instead.



----------- Changes -----------

26/12/12 17:32GMT: Fixed a couple of bugs and stripped a lot of stuff not relevant to this device from the script.
27/12/12 18:41GMT: Uploaded cobalt_recovery.zip to recover from a soft-brick
29/12/12 13:33GMT: Included link and attachment for CWM with thanks to 900supersport at freaktab.com
Last edited by gavroche; 29th December 2012 at 02:37 PM. Reason: bugfixes
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26th December 2012, 06:40 PM   |  #2  
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thanks so much, will try in a min, (got 3 from the deal )
26th December 2012, 06:45 PM   |  #3  
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--deleted--
Last edited by gavroche; 29th December 2012 at 07:49 PM.
26th December 2012, 07:38 PM   |  #4  
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Purchased 2, now lets see what we can install, off to try if I can find a JellyBean upgrade.

@it
26th December 2012, 07:45 PM   |  #5  
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I think we have a bit of work to do, the Gen9 stuff will brick your device.
26th December 2012, 09:07 PM   |  #6  
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i must be dumb i cant work out how to install the adb drivers? i just get dll files?
26th December 2012, 09:30 PM   |  #7  
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Quote:
Originally Posted by gavroche

I think we have a bit of work to do, the Gen9 stuff will brick your device.

Well anyone who feels brave can try this:
http://www.slatedroid.com/topic/4177...or-rk3066-wip/
26th December 2012, 09:43 PM   |  #8  
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Quote:
Originally Posted by Gavin01

i must be dumb i cant work out how to install the adb drivers? i just get dll files?

See the first post for a pdf with the driver instructions for Windows (http://forum.xda-developers.com/show...6#post35909906)
26th December 2012, 10:03 PM   |  #9  
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thanks
26th December 2012, 11:05 PM   |  #10  
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dev: size erasesize name
mtd0: 00400000 00004000 "misc"
mtd1: 00800000 00004000 "kernel"
mtd2: 01000000 00004000 "boot"
mtd3: 01000000 00004000 "recovery"
mtd4: 18000000 00004000 "backup"
mtd5: 08000000 00004000 "cache"
mtd6: 40000000 00004000 "userdata"
mtd7: 00400000 00004000 "kpanic"
mtd8: 20000000 00004000 "system"
mtd9: 151000000 00004000 "user"

^-- useful to know!
I picked one of these up myself just for some hacking.
Also see these links (sorry for spaces, its a "new user" thing apparently)
w ww.cnx-software.com/2012/11/04/rockchip-rk3066-rk30xx-processor-documentation-source-code-and-tools
v alentijn.sessink.nl/?p=382
^-- particularly interesting! bricked devices can be fixed quite easily using this method it would seem. Have yet to try - just installing linux on my laptop to make the whole thing easier.
Also - I'll try CM10. Wish me luck. Based on these links it really cannot be bricked.

Mark
Last edited by etoD; 27th December 2012 at 02:02 PM. Reason: clarification

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