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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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[ RK3288 ROM ] Teclast P90HD 4.4.2 custom root firmware (2014/07/29)
This is only for the old hardware revision A6K6.
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Oma7144

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2014/09/13 - 10:20
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P90HD Specs:

- PCB: R890-RK3288-V1.2 20140508
- Touchcontroller: FT5306
- Wifi/BT: AP6210
- Audio: ES8323
- Sensor: MMA8452
- Cams: GC2155 front, OV8825 rear
- PMU: Ricoh RC5T619
- eMMC: Samsung KLMAG4FE3B-A001
- Akku capacity: 7000 mAh

 

Here is the RK3288 SDK incl. the 3.10.0 kernel: https://bitbucket.org/T-Firefly/firefly-rk3288

It is mainly for a box. However, a good start. Maybe Teclast can provide some more stuff ... which would make the party even better ;-)

Due to the BGA footprint of the chips there is no easy way to make a reset or force the mask-rom mode. Especially the OTP of the Ricoh chip seems not to be hard coded to trigger a signal from the Power-On button. So, be careful!

- Oma -

Teclast04-1.jpgImage Enlarger

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Pete10
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2014/09/14 - 21:41
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Still no luck getting a stable system. System will not reboot after screen goes blank (due to some error - it just happens sometimes with no apparent reason).

Tried to revert to stock (1.24 from teclast) and then modify (remove apps, install others, nova from play store) and also root (root genius) and it works fine for some time (hours) and then black screen again (with backlight still on) and no way to get it to respond. Strangely enough, it is possible to flash in that state (loader device pops up etc), but still no boot at the end of the process (flash seems ok according to the androidtool/rockchip batch tool).  The only way - I think - is waiting for the battery to die, recharge and then the boot does start (at least that is the logic I seem to see).  Maybe it is this Ricoh chip related, and that a forced hw reset by button press is not possible?  Anyway, I think I will return it and hope that this will not cause problems (other than waiting a loong time probably to get it settled).

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2014/09/14 - 21:51
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Annoying. Make use of your warranty.

- Oma -

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rene13cross
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2014/09/18 - 20:43
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Hi Oma,

First of all, thanks for your hard work and dedication to the Android modding community.

I received my P90HD today and immediately wanted to try out the multi-window 4.4.4 version of your Rom. During the procedure laid out in your installation procedure, I had to stop at step 4a because the AndroidTool reported that "Lowerformat Device Fail". Is this OK, or are there steps to be taken to prevent this step from failing?

Also, another question I have is, should I use the "kernel york #817" that you link to? Are there benefits to using this?

Regards & Thanks


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Oma7144

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2014/09/19 - 07:37
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Could be an usb driver problem. Do not use win8.1 and usb3.0 ports.

Run the included Driver Assistant. De-install first, then install again.

- Oma -

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gaetanolip
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2014/09/24 - 12:45
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hi

can anyone test theese files http://www.elecard.com/en/download/videos.html

 

thanks

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Oma7144

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2014/09/26 - 20:02
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sho25 said

Got it. Glad I could contribute something.

Can you pls provide v1.26?

- Oma -

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sho25
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2014/09/26 - 22:36
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Oma7144 said

sho25 said
Got it. Glad I could contribute something.

Can you pls provide v1.26?

- Oma -

Oma,

Here it is. 

https://www.dropbox.com/s/59d5ryhbzhqpb2w/P90HD%20%28A6K6%29-Android4.4.2-V1.26.rar?dl=0

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Oma7144

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2014/09/26 - 22:45
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Cool. Thanks a whole lot, sho25!

- Oma -

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2014/09/27 - 10:09
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ro.build.display.id=V1.26_20140918

kernel #854 preempt 20140923

Still no window modus.

Changelog (google translate):

V1.26 version updates:

1, optimize GPU, optimized screen display

2, optimizing tUI, improve boot speed, 10 seconds hard start

3, other system problems to optimize the display optimization results:

As always hard to understand ;-)

For the moment no idea what the step change is. I will test for a while.

- Oma -

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2014/09/27 - 21:50
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Update post#1 with build v1.5.

- Oma -

v1.5_02.pngImage Enlarger

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Oma7144

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2014/10/03 - 08:52
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Any feedback on the V1.26 changelog? Is there an improvement in screen contrast?

There are changes on the camera HAL and the GLES libs.

- Oma -

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djvautrien
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2014/10/03 - 16:19
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First , thanks for your work on this tablet.

I have a problem with mine, Wifi is very low, i would like how i can open my tablet, do you have some advice?

because i think my antenna don't really works.

 

Thanks for all

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2014/10/03 - 16:29
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I used a scalpel to open the tab. In the attached pic you can see the clamps.

- Oma -

 

Teclast06.jpgImage Enlarger

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djvautrien
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2014/10/03 - 16:46
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thanks, do you have some idea for my very low low wifi, i must be maximum at 4 meter if i want wifi connection

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