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

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[ ROM ] Cube U30GT2 Android 4.4.2 KitKat custom root firmware (2014/06/06)
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Wintermute
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2014/07/09 - 09:58
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ntinos_tech:

Download OMA ROM from here: http://www.arctablet.com/blog/forum/crewrktablets-rk3188-entwicklung-customroms-development-croms/rom-kiano-elegance-android-4-4-2-kitkat-custom-root-firmware-20140610/#p43136

You actually don't need the ROM image itself (which is 4.4.2 anyway) but intructions and tools for going back to 4.2.2 from referred 7z archive. One doesn't need to be Android expert to follow instructions and use flasher's UI accordingly.

If you'd want to install OMA ROM (for the sake of trying everything), go back to page 2+ of this thread for further instructions and 2-3 (iirc) additional patches/updates.

Disclaimer: I haven't performed 4.4.2 -> 4.2.2 downgrade myself. Good luck with thatWink

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ian
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2014/07/09 - 10:22
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ntinos_tech said
A lot of people have the same strange situation...also another question for you Maxim and Ian  what is the behavior of the batteries? I mean once the tablet is off....and then you plug the power...what is the status of batteries? for me it is directly charged! and after a lot of hours on the charger it says....93 96 99 % etc....right after the shut down...the left hand corner(keys side) of the tablet is too hot. I cannot understand if the issue is from the batteries or the charger or the main circuit of tablet....or the rom!I cannot go back to 4.2.2 because I do not understand how...I am not android expert....just rockchip batch tool and restore is my knowledge! I want to get rid of the tablet but I do not know how and what to do with it!

For me, this is an occasional issue with this kernel when an application crashes and I cannot restart the tablet.  The battery is nearly full (around 90%) but pressing the power button will not switch the tablet on.  I push in the charger cable and the tablet switches on - I can then use the tablet without the charger. I am not having heat issues with the tablet, however I have replaced the batteries recently.  I should also say I can use the tablet for 7-8 hours without charging.

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ntinos_tech
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2014/07/09 - 13:58
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Thank you for your help...but it is a matter of understanding...and knowledge. For sure I may follow steps.. and I am not worried if I brick it.. since the last week is totally useless! I just need a real step by step approach on this...if it is not possible to go back to 4.2.2 then what I have to do wait until the next rom that perhaps stop the "shut down itself" issue? All the others that are facing the same issue how they use the tablet...?for me it is U-S-E-L-E-S-S!!!!!!!!!!!!!!!!

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vlevi
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2014/07/09 - 19:38
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You can go back to Jellybean relatively easily.
You should use supersport from, from freaktab.com [url="http://www.freaktab.com/showthread.php?8032-Cube-U30GT-2-v2-06-20131017-900supersportROM"] Download link is in the first post.
This is the easiest way, because it does include the old (1.04) bootloader, and a bit different flash tool software, which does not only flashes the system image, but also the bootloader, if you check it in the first row.
After that, you can flash any Jellybean ROM with any flashtool software.

Névtelen.pngImage Enlarger


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vlevi
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2014/07/09 - 20:57
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Well, I don't know, what happened, but I almost bricked my tablet, I had to use maskrom mode (thanks, arctablet !)

http://www.arctablet.com/blog/forum/cube-u30gt2/unbrick-your-tablet/

Maybe it is related to my previous post, maybe not I don't know :(
I'm now flashing the supersport rom is mask mode, I hope it will work....

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ntinos_tech
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2014/07/10 - 00:10
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Finaly it works?should i try it or not?

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Jgarciaillanf1
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2014/07/10 - 13:16
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Any news from OMA? Someone knows if he's developing da ROM?

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vlevi
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2014/07/10 - 18:37
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ntinos_tech said

Finaly it works?should i try it or not?

Yes, it works, but, because it bricked my tablet, and it was hard to recover (I had to dissassemble it, and short circuit something :) ), I cannot recommend it to you. Maybe there is no relationship between downgrading from KK to JB, but maybe it was the reason.

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ian
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2014/07/11 - 11:56
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vlevi said

ntinos_tech said

Finaly it works?should i try it or not?

Yes, it works, but, because it bricked my tablet, and it was hard to recover (I had to dissassemble it, and short circuit something :) ), I cannot recommend it to you. Maybe there is no relationship between downgrading from KK to JB, but maybe it was the reason.

To prevent bricking make sure that you Erase IDB and install with the correct loader (1.x rather than 2.x).  

I forgot to replace the loader and bricked my tablet.  Recovered and attempted again, this time replacing the loader and everything worked fine and the tablet was back on JB.

However I am running quite happily now on KK (Oma) and I haven't seen the power cable issue now for a few weeks.

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ntinos_tech
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2014/07/11 - 16:26
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with OMA elegance rom...for me was really nice as appearance....but the rotation was inverted..like it should be vertical and it was horizontal....you know opposite of tablet's screen...so what you are saying is that with OMA(can you please provide link.. just to be sure for which ROM we are talking) the tablet stopped shutting down itself...and not get back unless you plug the power cable...if yes then I definitely I have to try it again!

Thx

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ulf
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2014/07/11 - 16:39
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I have OMA elegance, and have same problems as ntinos_tech.

Tried with different methods to move to KitKat 4.2.2, but the little green android-man was always left dying on the screen. I think I will keep OMAs rom until the on/off-problem is solved. I have a loooong cable. It helps a lot.

 

Ulf

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Wintermute
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2014/07/11 - 17:13
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jesmail
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2014/07/11 - 20:05
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@wintermute

 

Does the compass work in OMA's rom?

Thanks....

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Wintermute
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2014/07/11 - 21:44
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@jesmail: um no, it doesn't. From what i've tried only accelerometer and gyroscope works.

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musico59
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2014/07/11 - 22:49
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Thanks to speak about thé kasty kitkat ROM..... oma rom has his own topic ! 

 

It 's make everybody confused

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