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[ROM] RK3188 Tab V88 by Oma rocks !

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Oma7144

Senior Member
Jul 20, 2012
2,282
1,547
Some Chuwi V88 stuff for evaluation and feedback ;)

V3.1_26-150x150.png
016-150x150.png
004a-150x150.png
007-150x150.png

012b1-150x150.png
a011-150x150.png
v1.0_020-150x150.png
v2.4_07-150x150.png

v1.1_04-300x225.png



Compatibility and builds for V88 clones and other tabs see post #4.


Make yourself clear which model do you have!
- Info Chuwi Stock Firmware 1st generation models
- Info Chuwi Stock Firmware 2nd generation models
Use the latest available kernel for your model.

- Root-Tool and Stock-Edition

- JB 4.2.2 Edition

- JB 4.2.2 SDK2.0 Edition

- JB 4.2.2 Multi Window Edition

- CM10 Edition

- Paranoid Edition

- AOKP Edition

- CM10.1 Edition

- KitKat 4.4.2 Edition

- KitKat 4.4.4 Edition

- CM12.1 Lollipop 5.1.1 Edition

======================

- KitKat 4.4.2 Stock Edition gen2 loader
This build needs a selinux kernel. Do not use older kernel.
There is one common kernel for both V88/V88S genations and one kernel for V88HD.




Some video instructions, thanks to techdolph


- GPL Sources

Specs:
- PCB: V8_MV1.1_2013_03_25 >>> http://forum.xda-developers.com/showpost.php?p=42488969&postcount=46
- Screen: IPAD Mini Display, Typ 821-1536-04
- Touchcontroller: VTL ct36x
- Wifi/BT: Mediatek MT5931 with BT Cooperation to MT6622 >>> http://forum.xda-developers.com/showpost.php?p=42388134&postcount=21
- Audio: RTL5616
- Sensor: MMA8452
- Keypad: Power = 116, Vol+ = 115, Vol- = 114
- Cams: NT99252 front, OV5640 rear
- HDMI: IT66121
- Clock: HYM8563
- Flash: 2x 8192 MB HYNIX
- Akku capacity: 4270 mAh >>> http://forum.xda-developers.com/showpost.php?p=42503146&postcount=50

Teardown (thanks to vicesat): http://www.youtube.com/watch?feature=player_detailpage&v=YG4PYLgbLQc

Technical Documents:
not available

RK3188: quad ARM Cortex-A9 Harvard Superscalar CPU core, DDR3 / DDR3L / LP-DDR2 SD RAM interface, NOR / NAND Flash ROM support, ARM Mali 400 GPU, ARM NEON SIMD engine, 1920x1080 (Full HD) display support, Open GL ES 2.0, Open VG 1.1 support, 1080p video decode, 1080p video encode, 1080p HDMI 1.4,USB 2.0 host interface


- Oma -
 

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Oma7144

Senior Member
Jul 20, 2012
2,282
1,547
.... outdated .....

cRom v3.0
- System ext4
- CWM 6.0.3.1 recovery
- TabletUI & Multi-User
- Ethernet support
- Init.d support
- Gameloft compatible
- USB-Hub enabled
- Gamepad (PS2, XBox, ...)
- Kernel modules (cifs, tun, lan, serial)
- latest hosts, su, su-binary, busybox
- MX Video-Player, Play Music & Volume+
- Reboot Menue, Kernel Tuner, Pimp my Rom
- Dateimanager HD (Root)
- Nova Launcher

cRom v3.0.1
- light version with PhabletUI
- wifi_fix

cRom 3.1
- latest kernel #17
- wifi fix
- toggle UI: PhabletUI_fix & TabletUI_fix

cRom v3.2 & format_NAND_fix
- internal Storage 4,0 GB
- external SD mounted as NAND (up to 64 GB)
- device spoofed as Nexus 7
- intSD_to_NAND_fix

Tabs with new PCB MV2.0 will not boot on latest kernel #17, which comes
with Chuwi JB 4.2.2 and Oma JB 4.2.2 v3.1 & v3.2.
However, they will boot on kernel #11. Pls change in folder rockdev/Image.
V8_MV1.1_20130325 - S/N V88 Quad16G2130501xxx
V8_MV2.0_20130415 - S/N V88 Quad16G2130502xxx

cRom v3.3 & format_NAND_fix
- latest kernel #98 (should boot MV2.0 boards)
- back to stock mount
- battery percentage mod
- advanced keyboard


- Oma -
 

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Ppain

Senior Member
Apr 10, 2012
88
60
Wellington
Absolutely Brilliant I love this tablet! and your rom completes it. I do however do not like the home launcher, If you could can you please port the android 4.1.1 back into the device? Also you do not need so many cpu tuning and system tuning apps. I tried using pimp my rom but all most eveything I tried had no effect at all! However the performance and battery life is spectacular for this rom you have made, If you could I would be very grateful if you made a light version of the rom aka no bloatware etc remove all unecessary apps?
 

Oma7144

Senior Member
Jul 20, 2012
2,282
1,547
=======================================================================================
Firmware will also work on: V88s, V88 Titanium Ice Green
For new hardware revisions without QUAD in the serial number (V88, V88S, V88HD) see here
=======================================================================================
Clones:
- ICOO Fatty2 http://forum.xda-developers.com/showpost.php?p=43739417&postcount=260
- Dragon Touch R8 mini http://forum.xda-developers.com/showpost.php?p=45994350&postcount=657
- Alcor Zest Q813i http://forum.xda-developers.com/showpost.php?p=46015179&postcount=660
- Alcor Zest Q813ix http://forum.xda-developers.com/showpost.php?p=49578288&postcount=1166
- Cbox Tab X785 http://forum.xda-developers.com/showpost.php?p=46598421&postcount=786
- Ritmix RMD-785 http://forum.xda-developers.com/showpost.php?p=47316642&postcount=929
- Dyno 7.85 http://forum.xda-developers.com/showpost.php?p=49842572&postcount=1282
- Xtreme X81 http://forum.xda-developers.com/showpost.php?p=49879783&postcount=1309
=======================================================================================
Firmware may work on other tabs coming without retina screen (change kernel): Kernel Archive

Verified:
- Vido Mini One ZZ http://forum.xda-developers.com/showpost.php?p=45665042&postcount=605
- Vido N80RK http://forum.xda-developers.com/showpost.php?p=44036998&postcount=357
- Pipo M1pro http://forum.xda-developers.com/showpost.php?p=44552824&postcount=465
- Pipo M8pro http://forum.xda-developers.com/showpost.php?p=44552824&postcount=465
- Pipo Max M9 http://forum.xda-developers.com/showpost.php?p=44315216&postcount=404
- ifive X2 http://forum.xda-developers.com/showpost.php?p=45566006&postcount=590
- Colorfly CT801 http://forum.xda-developers.com/showpost.php?p=47292266&postcount=922

Builds for other tabs:
- ifive mini3 http://forum.xda-developers.com/showpost.php?p=45126626&postcount=517
- Pipo U8 http://forum.xda-developers.com/showpost.php?p=45113855&postcount=512
- CX-919 http://forum.xda-developers.com/showpost.php?p=45140144&postcount=527
- Sticks/Boxes http://forum.xda-developers.com/showpost.php?p=45158180&postcount=540
- Cube U35GT2 http://forum.xda-developers.com/showpost.php?p=45821855&postcount=642
- Vido N80RK http://forum.xda-developers.com/showpost.php?p=47181523&postcount=900
========================================================================================

- Oma -
 
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splotz

Senior Member
Feb 10, 2012
108
10
Europe
Thank you for sharing your ROM with us, i will test it as soon as i have my chuwi v88 in my hands.

Glad to see you rocking the v88.

Oma rocks!
 
Last edited:

Ppain

Senior Member
Apr 10, 2012
88
60
Wellington
The combination tab/firmware is fast enough for everything, so additional tuning maybe show not that effect ;)

I compile the images for my personal use and let all other participate (if they like).
So there maybe a lot of apps you will never use. You can strip that down by using hiuninstaller for example.

The build comes with stock launcher, too.

- Oma -

I aso noticed that when gaming your rom starts freezing and i get massive lag spikes! I know that this shouldnt be like that as previous roms and oiginal firmware i have used did not do this! can you please try and fix it? This happens with NBA2k13 and Asphalt 7 aswel as NDS Emulators, Aso is it possible to port the android 4.1.1 launcher to this new rom? I do not ike the look of the new stock launcher compared to the previous launcher!
 
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Oma7144

Senior Member
Jul 20, 2012
2,282
1,547
Thank you for feedback.

I did download Asphalt 7 from Play Store and played for a while. Nothing special noticed.

Stock-Launcher from 4.1.1 is not possible due to other API-level.

- Oma -
 

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Oma7144

Senior Member
Jul 20, 2012
2,282
1,547
arielp said:
hi
thank you for developing for chuwi v88, really appreciate your work.

i have some question regarding chuwi 4.2.2 oma v3.1:

why the clock font and taskbar icon so small, compared to TabletUI on 4.1.1,
anyway to change to phablet ui? changing lcddensity build.prop to 213 does not do the trick.

usb mass storage seem not working on me, windows only showing 2 empty drive, on tablet no notifitcation to enable massstorage, MTP and PTP mode works fine.

thank you.

Confirm problem with usb mass_storage. Build with PhabletUI will follow.

- Oma -
 
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Oma7144

Senior Member
Jul 20, 2012
2,282
1,547
For documentation purpose:

A) Chuwi V88 all models with Bluetooth :


a) V88 Stock Build Date 2013-04-26 - Initial Android 4.1.1 Release, kernel wqs #301 preempt 24.04.2013 (was on my tab)

b) V88 Stock Build Date 2013-05-09 - update 1, with kernel bob #460 preempt 07.05.2013

update 1 kernel change log:
- increased stability

c) V88 Stock Build Date 2013-05-25
- update 2 with kernel bob #11 preempt 25.05.2013

update 2 kernel change log:
- solve camera stops running bug
- optimized for lower power usage
- HDMI Push optimized connection
- optimizing wakeup, fix touch function not detecting input

d) V88 Stock Build Date 2013-06-03
- Initial Android 4.2.2 Release, with kernel bob #17 preempt 29.05.2013

e) V88/V88s Stock Build Date 2013-06-20 - update 1 with kernel bob #98 preempt 19.06.2013

update 1 kernel change log
- reduce sleep of death occurrence
- increased stability

f) V88/V88s Stock Build Date 2013-06-28 - update 2 with kernel bob #102 preempt 20.06.2013

update 2 kernel change log
- increased stability

g) V88/V88s Stock MW Build Date 2013-08-01 - Initial Android 4.2.2 Multi-Window Release with kernel bob #109 preempt 31.07.2013

h) V88/V88s Stock Build Date 2013-09-08 - update 3 with kernel bob #160 preempt 06.09.2013

update 3 kernel change log
- optimized for low power charging Huaping phenomenon

i) V88/V88s Stock MW Build Date 2013-11-18 - update 1 with kernel bob #104 preempt 10.12.2013

update 1 kernel change log
- optimized touch support

j) V88/V88s Stock MW Build Date 2014-01-21 - update 2 with kernel bob #397 preempt 24.01.2014

update 2 kernel change log
- increased stability


B) Chuwi V88 all models without Bluetooth:

a) V88 Stock Firmware Build Date 2013-04-25 - Initial Android 4.1.1 Release with kernel wqs #316 preempt 25.04.2013



======

With RKAndroidTool you could flash each kernel separately (tick parameter & kernel).



- Oma -
 

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Ppain

Senior Member
Apr 10, 2012
88
60
Wellington
I played around with your rom more and I got 19k on Antutu :) I tried re running antutu after that but only hit between 17.3k and 18k so I am not sure what I did right! Also USB-Mounting does not work, sometimes after I reflash your rom about 5 times USB-Mounting works fine for a few hours and then it stops. Do you think we will be able to see a CM10.1 build for our device? or is that not possible? And any ETA on a new and improved Rom :D I really enjoy yours compared to every other custom rom available
 

sydeu

Senior Member
Feb 25, 2011
379
137
Stockholm
This rom works very good for me. However there is one problem i have with both this one and all others, mkv playback is not as silky smooth as it should be. It worked perfectly fine on my nexus 7 and my onda vi40 Single core but on the chuwi it just isn't perfectly smooth like it should be, anyone else experiencing this?
 

kampar4

Member
Jun 11, 2005
38
2
Wifi reception is quite weak

Hi OMA,
just install v3.0.1 light phablet version freshly. It seems little bit heavy than the stock 9 may.
And wifi signal reception is weaker that that stock. Now is around -70db than -58 db on the that version of stock. But everything is very good.
Good work OMA....thanks.
 

arielp

Senior Member
Jul 1, 2008
76
9
Hi OMA,
just install v3.0.1 light phablet version freshly. It seems little bit heavy than the stock 9 may.
And wifi signal reception is weaker that that stock. Now is around -70db than -58 db on the that version of stock. But everything is very good.
Good work OMA....thanks.

This rom works very good for me. However there is one problem i have with both this one and all others, mkv playback is not as silky smooth as it should be. It worked perfectly fine on my nexus 7 and my onda vi40 Single core but on the chuwi it just isn't perfectly smooth like it should be, anyone else experiencing this?

probably due to the kernel (april), you can try Oma suggestion, to flash the latest kernel on top 3.0.1, and post back, wifi should be better....

=========

Not specific with this rom (also happened in stock), why the task switcher preview is 180 degree flipped?? anyone experience the same??

https://dl.dropboxusercontent.com/u/21932186/flipped.png
 
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splotz

Senior Member
Feb 10, 2012
108
10
Europe
Light Version with PhabletUI:
180°
Yes, also screenshots are turned around.


Copying files in backround seems to slowdown the Tablet.
Can anyone confirm?
 
Last edited:

kampar4

Member
Jun 11, 2005
38
2
WIFI on v3.0.1 with different kernels (may)

Hi Oma and Arielp,
Just finishing change 2 different kernels on the light v3.0.1. i.e. bob #460 and bob #11.
But unfortunately, in term of WiFi reception, they are no different...still weaker than the stock Build Date 2013-05-09.

Please kindly notice that v3.0.1 with kernel bob #11 is quite laggy, but USB mass storage work well.

Cheers...
 

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