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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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Cube U39GT Not Booting
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ColdDesire
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2014/02/04
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2014/04/19 - 14:17
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I've had it for about two months now and it has worked like a charm until this morning when I tried to turn it on (I turn it off last night). It simply doesn't boot, I tried to charge it but it doesn't seem like it's doing anything (I'm not sure if it IS charging).

Any suggestions? Is there a recovery mode/emergency boot mode or anything like that?

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vasil_d
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2014/04/23 - 15:24
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I dont know did you fix it or not but I am going to tell you how to fix it in 3 deferent ways.

1 way - Push and hold the power button for 15 sec. Do not let go for those 15 sec. Release the button.

1.1 Pres the power button for 3 sec and see does it start or not

2 way- Push and hold the power button for 15 sec. Do not let go. Do not let go for those 15 sec. Release the button.

2.1 Download and prepare to flash the firmware again with PC. Open the flash tool, load all files needed, hold VOL+ and POWER (do not let go) and plug the microUSB cable

2.3 when a box becomes green flash the firmware by pressing the restore button

3th way THE HARD BRICK WAY

3.1 Open the device

3.2 Download and prepare to flash the firmware again with PC. Open the flash tool, load all files needed

3.3 Unplug and plug the battery connector

3.4 Plug the charger connector and micro USB

3.5 THE MOST IMPORTANT THING. Using a needle SHORT CIRQUIT pins 7 and 8 (or 8 and 9 do not worry you wont be burning anything) on the NAND module. The nand module is the left one in/on your side (when the tablet is face down and the conectors are on/facing left)

3.6 The box in the flash tool will become purple . Press the restore button.

 

Thats are the 3 ways that you can allways unbrick/restore RK3188 tablet.

Allways first try 1 and 2 before proceding to 3

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ColdDesire
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2014/04/23 - 18:22
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Thank you for your reply.

I had tried your first suggestion already, but no luck. Haven't tried 2 and 3 but I left it at a store yesterday, they said they'll let me know if they can fix it.

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ColdDesire
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2014/05/09 - 00:06
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The technician said that the motherboard was broken.

He could not find a replacement but he said that if I find one, then he can substitute it.

What type of motherboard does the U39GT use? Would a slightly different one work?


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Thermaltake
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2014/09/24
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2014/09/26 - 18:57
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I can't get my U39GT in mask rom I tried to touch 7-8 and 8-9 pins on nand chip while rocket tool 1.7 was open in flash mode but box just won't turn blue when I touch them, please help I need to erase that nand and install 1.06 my screen is black with light in the background I guess problem it that I have to erase that IDB and install stock 1.06 to get tablet worked, please help.

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vasil_d
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2014/09/28 - 12:56
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When you use MASK rom, the power plug/adaptor must be plugged in.

Otherwise the MASK rom will not work.

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Thermaltake
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2014/09/28 - 23:33
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For some wierd reason my tablet just won't enter mask rom, but I found out when he is plugged on adapter and usb I short circut few pins on nand chip, why I say few becouse on 7-8 or 8-9 nothing happends and I just go with my flat screw driver on few of them, and screen is back no matter what rom I flash, and everything is working normal and working on it.

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xelex
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2015/06/17 - 20:29
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Can you tell me where is the 7-8 and 8-9 pins? I've made some photos about the motherboard:
https://www.dropbox.com/sh/jods4nr1blicks1/AADYHxbbrulfyJpy6m-8wXZ6a?dl=0
I don't know where I have to make this short cirquit.

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Oma7144

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2015/06/17 - 21:06
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There are two NAND's. You need to try.

- Oma -

 

NAND.pngImage Enlarger

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xelex
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xelex
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2015/06/17 - 22:26
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I'm very very glad. THANK YOU SO MUCH!!!!!!! After a year I managed to do it with your help :))))
Which chip is closer to RK3188 that solved the problem, and as I counted it was the 8-9 pin.

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Oma7144

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2015/06/18 - 09:43
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Fine.

- Oma -

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