yashsingh1/xdaforums huggingface dataset:
[Android General] Devious1xx:
Need root for nextbook 8. Kingoapp did not root.

I got the nextbook 8 yesterday from Walmart and used the Cydia Impactor and Kingoapp that I downloaded on Tuesday but Kingoapp failed to root it. The specs below are from CPU-Z app. I wonder if the hardware info or KitKat version is important for why it failed to root.

What is a safe way to open the tablet without damaging it? Taking out the internal 8GB micro SDHC card and dealing with it directly might be one solution?

TYPE SPECIFICATION

Embedded Processor (SoC)

Model Rockchip RK3066

Family ARM

Architecture ARM Cortex-A9

CPUID 000000004137C090

CPU Revision r3p0

Core Count 4(4)+0(0)

Frequency 816 MHz

Frequency (Min) 312 MHz

Frequency (Max) 1608 MHz

Process 40 nm

Video Controller (GPU)

VendorARM

Model Mali-400 MP

LCD Panel

Screen Resolution (pixels) 976 x 768 px

DPI (Dot per inch) 160 dpi

Integrated Memory

RAM (Memory available for the CPU)1024 MB

Flash (Stockage) 1003 MB

Device

Manufacturer Digiin

Model NX785QC8G

Product M865FD

Android Version 4.4.2

Linux Kernel 3.0.36+ (eng.root.20140527.174726)

Scaling Governor interactive

Embedded Sensors (0)Gravity sensor
[Android General] Devious1xx:
See What's Inside!

Regarding opening the tablet, I notice a hollow sound nowhere but in the area of the lower black border directly underneath the recently opened apps button. I suspect a screw is below the screen there. If this tablet is like a 7 inch tablet that I took apart for a friend with help from a video walkthrough on YouTube, there very well may be an 8GB SDHC card within, as there was a 4GB one in that ancient 7" tablet. There may be an exploded view of this tablet on the internet somewhere or a service manual with many detailed pictures of its internals just waiting for some adventurous hero-to-be to discover.:highfive:
[Android General] Exile1975:
I've recently bought this tablet and a week later updated to the 4.4.2 factory update. I then tried installing ONLY the recovery_CWM. The install seemed to go fine, but when it was supposed to reboot it shut down. When i restarted i booted into the tablet. I tried several button combinations to boot to cwm but couldn't get it. I figure if i can get to cwm i can root the factory 4.4.2 that way... Any help? Is there more than the recovery i need to flash to get to cwm? I've since reinstalled the factory recovery image and all is back to normal...
[Android General] corruption:
BRICK!

bricked it! cant boot into flash. still got LED light any help would be awesome!
[Android General] devdude:
If I am not mistaken I think you need to be rooted before you can install a custom recovery. Have you tried booting into flash mode and installing OMA ROM then doing the custom recovery? Flash mode for me was power off tablet, pres both volumes down and plug into PC USB port.
[Android General] corruption:
no access to flash mode. pretty sure i either wiped or corrupted my bootloader. my pc still recognizes the device
[Android General] Oma7144:
Make sure the tab is on the charger and try again. Does the tab have a reset?

- Oma -
[Android General] corruption:
all good now!

i returned it to walmart, ready to try again! how do i know which loader i have?
[Android General] Oma7144:
The tab comes with 2nd gen loader (JB and KK). So, no need to touch the loader.

- Oma -
[Android General] kfraz88:
Completely lost

So i cant seem to get the tab to boot into the mode it needs to be in for the RKandroid tool to recognize the device. is there any way to just flash this in stock recovery?
[Android General] eegorr:
Of course there's an 8GB card, that's where the 8G at the end of the name comes from!
[Android General] AceDaMack:
ok I have this tablet and I recently tried to update it and the freaking update messed the darn thing up, now it just hangs on the nextbook powered by android. I was wondering if I can fix this somehow get me back to JB I can still get to factory recover. I'm really not trying to send it back and wait two weeks.
[Android General] Exile1975:
Your best bet is to load the update onto an external sd card, boot into the factory recovery and update from there. Make sure the tablet is plugged in when you do the update.
[Android General] AceDaMack:
thanks will try. keep you updated.
[Android General] devdude:
For my tablet I had to power it off, then hold both volume toggles down while these are both down plug it into the USB port on the PC. Not sure if it matters but the tool is up and running on the PC before doing this.
[Android General] AceDaMack:
Thanks a lot guys back to normal, I like the update so far.
[Android General] kfraz88:
Cant connect

I cannot for the life of me get it into flash mode. no button combo i try works. i even returned the old one and got a new one. someone pls explain exactly what to do. can PM me if you want. thanks
[Android General] devdude:
As far as I can tell, there is no visual confirmation that it is in flash mode. I know it is because the RKAndroidTool will recognixe the device after plugging it into the USB port.
[Android General] tsjanda:
I have tried the method listed in the op to root however was only able to get the driver part done the 2nd part using kingo fails each time. Is there another method i just want to root not flash a rom
[Android General] kfraz88:
If you are running kit kat on it I had the same problem. I couldn't find any method that would work. Tried kingo, towel root and one other and nothing worked. I returned mine and picked up a jelly bean version and kingo worked fine on it
[Android General] tsjanda:
Can you down grade to jb?
[Android General] mhunt13:
Root and CWM help

-> Oma

I bought my NX785QC8G with 4.4.2 running on it. Would like to keep close to stock, so future OTA updates will work.

Really pleased with it, but would like root access to remove some unneeded apps from system folder. Also would like a CWM recovery for backups, and to use some apps that require root (like sEFix).

Sadly, haven't found a root tool that works on stock 4.4.2.

Any chance you could provide a root method to flash as an update.img (or easier yet an apk to download and install to gain root).

If root is obtained, maybe can install CWM through Arctools ?

This might be too much help to ask for, but would appreciate your assistance and/or guidance.

Thank you so much for your support of this tablet to date!!!
[Android General] devdude:
What would be the quickest way to get back to stock on this device? Is there an image I can use with the RKTool? Searching is not turning up anything useful. Thanks in advance!

MoboRobo (for drivers) then Kingo Android Root woked for me in getting the device initially rooted.
[Android General] tsjanda:
Is there a 4.2.2 update image for download
[Android General] tsjanda:
I was able to install oma's ROM after a lot of time and boot fils I got it to flash and boot and flash cwm recovery with success. I am currently reviewing my notes to repeat my success and post here. To conclude I flash OMA' 4.4.2 ROM with root and cwm. Hope to post later my steps for everyone.
[Android General] Jarmaha:
Rooting is not working

I have my new nextbook 8 and it will not let me root in any way I used the method given on the first page and get stopped on the first step when Cydia Impactor says the system will not allow the drivers to do this. Please help.
[Android General] m77hawk:
same problem

Alright I have the exact same problem as AceDaMack. Started install yesterday afternoon now all the tablet will display is Nextbook powered by android. What went wrong and what can I do to fix it? Assume I know next to nothing (on this topic) any directions will need to be in really simple terms. Thanks!
[Android General] perfectpitch:
New screen shots of v2.0 running xposed framework and with dalvik optimized patches. Thanks again OMA for such work.
[Android General] tsjanda:
Link to version 2.
[Android General] perfectpitch:
On page 10 not sure how to link to other posts. Xposed and patches installed by me
[Android General] tsjanda:
On page 10 not sure how to link to other posts. Xposed and patches installed by me

Can you zip the xposed and patches and upload or email them to whole.beans@outlook.com
[Android General] perfectpitch:
http://xdaforums.com/showthread.php?p=47913987 This is the list for the dalvik patch. Keep in mind this is for another device. I just tried it to see if it would work.

As far as exposed framework.

http://repo.xposed.info/module/de.robv.android.xposed.installer

Just follow directions for install. Please remember at the

Is time ART IS NOT COMPATIBLE with xposed. So make sure to revert to dalvik if you are already using art.

---------- Post added at 08:21 PM ---------- Previous post was at 08:18 PM ----------

I hope this helps those looking for it. Remember do a nandroid backup before applying any of these items. Neither myself or OMA are responsible if you brick your device.
[Android General] Devious1xx:
Easy To Open. Nextbook 8 Cover Comes Off Without Tools.

This post is long overdue, since, I removed the cover almost two weeks ago using nothing but the nail of my thumb. I simply eased my thumbnail into the groove where the edge of the bevel surrounding the screen meets the top of the case / cover and worked it all the way around, slightly wiggling my thumb up and down, from the sides to gently pry loose the little plastic tabs that hold the cover on. I couldn't photograph the insides so I tried to make a diagram. There may be typos and when posted, the positions of the chips won't stay where I put them in the diagram. Unfortunately, there is no built in, removable 8GB microSDHC card, instead are the two 4GB Samsung chips soldered to the circuit board. Since I first got the tablet I have had trouble with erratic touchscreen behavior, so I exchanged the tablet for a new one. Fortunately, I was able to get one with Jellybean (4.2.2) instead of KitKat (4.4.2). Hopefully I can root it now. My original tablet with the KitKat OS was manufactured June 2014, the replacement with the Jellybean OS was manufactured April 2014 and the color of the top of the box that it comes in is black, loosely indicating the tablet's color. The KitKat versions come in blue or red, with appropriately matching box tops, at the Walmart near me.

Rockchip********************* M866 FD*** (Facing up)********* SAMSUNG****** 419

RK616* (Facing left)***************************************** K4B4G1646Q-HKY0*** (Facing up)

****

***************************** Rockchip*********************** SAMSUNG***** 419

**************************** RK3188-T************************ K4B4G1646Q-HYK0*** (Facing up)******** REALTEK

************************* ACAU348V* 1418 (Facing down)********************************************** RTL8188 ETV

**************************************************************************************************** DC03531

**************************************************************************************************** GE04** TAIWAN (Facing up)****************

********* TOSHIBA ZP5050

******** CHINA* 1414 KAE

******** TC58TEG6DDKTA00 (Facing up)
[Android General] Devious1xx:
Nextbook 8's Innards

I opened the new replacement, the slightly older one, and found the changes below:

Rockchip********************* M866 FD*** (Facing up)********* SAMSUNG****** 413

RK616* (Facing left)***************************************** K4B4G1646Q-HKY0*** (Facing up)

****

***************************** Rockchip*********************** SAMSUNG***** 413

**************************** RK3188************************ K4B4G1646Q-HYK0*** (Facing up)******** REALTEK

************************* SCAU33R6* 1408 (Facing down)********************************************** RTL8188 ETV

**************************************************************************************************** DB02GG1

**************************************************************************************************** GE02** TAIWAN (Facing up)****************

********* TOSHIBA VZ9032

******** TAIWAN* 14119 AE

******** TC58TEG6DCJTA00 (Facing up)

There is also a large square Great Power 0392123 4000mAh 3.7V Li-ion rechargeable battery in both, the only difference being the date code. Which correspond closely with the date the tablet is manufactured, .e.g., c2014.05 for the tablet made June 2014.

Apparently, the newer model is slightly slower, as the Rockchip RK3188-T is somewhat slower than the RK3188. There's an app about the web to determine which one you have so you don't have to open the tablet to check yourself. I also discovered that the Toshiba TC58TEG6DDKTA00 and the TC58TEG6DCJTA00 are 64Gbit or 8GB 19nm NAND Flash MLC. I don't see any difference between them now.

Manufacturers often seek lower production costs after establishing good reviews from their initial offerings while also addressing any bugs that have cropped up.

I recall Sony's removal of the better RCA jacks for a custom a/v port on the original PlayStation, while addressing the protracted loading times of the initial models.

The KitKat's UI is far more aesthetically pleasing than that of Jellybean 4.2.2 and the major preinstalled apps are more polished.
[Android General] infirno77:
Can anyone post a review of oma's ROM? Looks good, just want to make sure before I dive in.
[Android General] perfectpitch:
I've been running omas room for a good long while now. Everything has been running great. I have had no problems

---------- Post added at 10:17 AM ---------- Previous post was at 10:16 AM ----------

Runs well on art or dalvik. Exposed installs just fine. Not much more I can think of to say than that
[Android General] infirno77:
Thank you very much for the review.
[Android General] corruption:
more?

I was curious if there was any other ROM development for this device? Or even info on porting to our device would be cool
[Android General] infirno77:
Looks like freaktab had one in the works. I haven't tried it yet, but it looks good. http://www.FreakTab.com/showthread.php?p=217258
[Android General] riddick81a:
Is this ROM multilanguage with Czech language? thanks
[Android General] SwoRNLeaDejZ:
ok I have a very, what will sound like crazy, question...

First, I can not get the RK tool to list "Found" which is irritating in and of itself..

The main reason I ended up on this thread, is because I am currently on my THIRD Nextbook 8, and am having ZERO luck with these tablets. The first one, when connected to my home wifi, slowed EVERYTHING else using the network down to a crawl, like had no bandwidth for anything else. When the tablet was loading anything using the wifi (video, website, anything) it would slow my network down to 1.2 mbps/.7 mbps (when it is normally about 35 mbps/30 mbps). The second one I got was fine for about a week or so.. After that, the battery was at 30% one night, and then dropped to 0 and shut off. The battery would show that it was charging, but it wouldn't charge, and as soon as the charger was removed, even if it said the battery was full, it would shut off. I tried wiping the cache knowing that it would wipe the battery stats thinking this might work. It did. For about an hour... then it shut off again..

Being inside the 15 day window at Walmart to return it, I did. Just got the THIRD one home, and it seems to have the same WiFi problems as the first one. I am at my wits end. I don't know what to do... The tablet is awesome, when it is working, but that is rarely the case. If anyone knows something I don't, or encountered the same problem, I would love some input. I am at a point where I am about to return the third one, and shell out another hundred bucks and just buy another Nexus 7. Any help is appreciated.
[Android General] Homer J. Fong:
For tablet to be found, try powering down the tablet, then hold down volume up and volume down while plugging in mico USB. Only way that worked for me.
[Android General] perfectpitch:
That is how I get into the right mode
[Android General] SwoRNLeaDejZ:
I think I'm just going to return it and try something else, because I did the official KitKat update last night, and still had the same WiFi problems. I'm assuming that means it is a hardware issue. Probably something with the WiFi radio itself. I'm banging my head against the wall with this stupid thing. I wish at least one other person somewhere suffered from the same bandwidth problems because at least them it would give me some hope that I'm not crazy..
[Android General] Devious1xx:
Taming the Tablet

I use a recent version of Advanced Task Killer, with its Security Level option set to low so that more apps show up in its list of running apps/processes and services. From the list, I can get to an app's "App info" page to either Force stop it or Disable it.

I also make a point to run Google Settings to turn off its Verify apps setting. Then I run Play Store and turn off its Auto-update apps feature from its Settings menu. Here also, Notifications for available updates for installed apps and games can be turned off, though I keep mine on.

I go through the settings or configuration menu of every newly installed app to turn off the so-called anonymous statistics reporting function, and other feedback related functions.

I also turn off their feature for automatically checking for available updates.

I turn off any Auto Start feature of apps I'd rather start manually.

I put the Power control widget on the desktop so that I can ensure that the Automatic Sync function is off.

I also turn off auto-sync from within apps, I'd rather sync manually.

I set the weather and news apps for manual updating when I need to conserve bandwidth for some particular reason.

I install UpDownMeter Free to learn how much data is being sent and received.

In Settings, under Wireless & Networks, I use the Data usage feature to determine which apps I need to go after to stop their greed.

Whenever Wi-Fi is turned on, just about every app on your tablet starts up, if it's not running already, and tries to connect to the internet. Many apps have undisclosed "call home" functions and all of your apps, including the pre-installed ones simultaneously try to devour every bit (no pun intended) of your network bandwidth.

That said, given a few minutes they will have finished their chores and things will return to normal, that is, if all of your Google apps have already been updated or you managed to get to the Settings in Play Store and turn off the Auto-update apps feature.
[Android General] Sarge461:
I have a question for everyone here concerning the battery on this device. A few people on freaktab also have reported that the tablet will shutdown without warning when the battery reaches 30%. Once it is plugged in, it will not power back on right away. When it does it only shows 1% charge. My thoughts are that the battery protection chip is killing the battery power when it hits the minimum voltage like it is supposed to, but the tablet is not measuring it correctly so it never gets below 30% to warn you of critical battery level. Some including myself are rooted on 4.4.2 and have tried battery calibration apps to no avail. Could this be a value located in the build.prop file or something else?

Any help would be greatly appreciated.

Jeff
[Android General] microMXL:
So can I flash this Oma rom over the factory kitkat one?
[Android General] corruption:
How can I flash oma's 4.4.2 via cwm?
[Android General] perfectpitch:
You have to flash via the rktool supplied in his zip
[Android General] aydd:
good work
[Android General] Oma7144:
Gents,

Found some time to do a quick update to bypass the 8 GB NAND bottleneck ;)

Mount points are changed which will make up to 32 GB space available for apps and app data. The internal storage is now 4 GB.

Also I touched the footprint of the build to make it wide compatible for apps in the Play Store.

Nextbook 8 QC by Oma KK 4.4.2 build v2.1

– stock 4.4.0 recovery, CWM 6.0.3.1 recovery

– system ext4

– kernel yunyan #37

– internal storage 4 GB

– external sdcard mounted as NAND

– device spoofed as Nexus 7

– ethernet support

– init.d support

– gameloft compatible

– USB-Hub enabled

– gamepad compatible (PS2, XBox, …)

– kernel modules (cifs, tun, lan, serial, audio)

– latest hosts, su, su-binary, busybox

– Reboot Menue, sEFix, FX Sound

– Dateimanager HD (Root)

– Nova Launcher

Instructions are included in the download pack.

hints:

- to improve UI feeling: disable all animation scales in developer options,

- use Nova launcher and set animation/scroll to "faster than light" and

- enable Entropy Fixer with value 256

- to improve battery drain set keep wi-fi on during sleep to never

- to get full access to the build enable /system rw in File Manager HD

- to disable su notifications change notification in settings/SuperSu

- to prettify the build use Xposed Framework > Starter Pack

- to enable multi-user use the Xposed module Multi Users

Please report any problem with this firmware, I can't verify this custom firmware

works as I don't have the tablet to fully test the custom firmware.

Be aware: it is your own risk!

- Oma -
[Android General] perfectpitch:
Nice update. Working well. And the remaining size on the internal is big enough for a cwm backup.Great addition
[Android General] Oma7144:
Fine. Thank you for feedback.

- Oma -
[Android General] matt4787:
great rom love it. how good are you with custom firmware
[Android General] vangelislam:
omaa i cant install this rom

v2.1

a) go to app drawer, open RebootMenue and Reboot to Bootloader

what i can do ?
[Android General] Conanthereaper1984:
Nice update.
[Android General] vangelislam:
nice update but my tablet sticks at logo screen !

maybe i do something wrong but what?
[Android General] BROKKANIC:
Thanks for this thread and ROM! :good:

I can confirm there is no visual confirmation that the tablet is in flash mode. It's just a black screen. If you did it right, RKTool just shows found.

I had to power off device. Hold down vol +/- together. Then plug in usb to computer to get RKTools to find device.
[Android General] Nonta72:
Can you help me ?

Hi [MENTION=4751990]Oma7144[/MENTION]

I have this tablet

It's basically similar to this Nextbook exept mine does have BT :good:

Quick Specs:

- RK3188

- 1GB RAM

- 1024x768

- 7,85 Inches

- Android 4.2.2

- 8GB Internal

- Wi-Fi + BT

I want another ROM (especially KK) because Wi-Fi performance is VERY BAD on this tablet :crying:

Poor wifi performance,

Weaker Wifi signal,

You need to be VEY CLOSE to the router to be able to connect :p

So, I firstly tried this build, but it ain't booting sadly.

I think it have a Gen2 Loader since System is on block9 (as for the Nextbook)

Also any of CWM I tried since now aren't working.

I don't mind flashing, I already have the Full System Dump (System.img, Recovery, Boot, Kernel etc).

I tried the online CWM Builder, No luck.

The biggest problem is that the Tablet doesn't have a Source yet :(

Lastly, do you think one of your Build (like V88, V88s, iFive Mini 3) can work with that Tablet ?

Note: I used to flash your Stuff on an unsupported (by your work) rk3066 Tablet. The only working CWM was BQ-Curie one, and most of your rk3066 Roms were working fine (with minor problems like Sensor, Rotation).

I became one of your fans and I tried building/customizing my own rk3066 ROM :laugh: See here WizzRK "AmatROM for Rockchips"
[Android General] Oma7144:
Let me see your hardware. Pls provide a dmesg log.

- Oma -
[Android General] crazynapkinman:
Help! How do I fix this?

Stock.

No root.

Sent from my Samsung Galaxy Rush with Tapatalk.

Devices: Nook Color, Dell XPS 18, Galaxy Rush (All modded)
[Android General] crazynapkinman:
How do you restart in "flash-modus"?????

Trying to flash CWM and such but not having any luck by following his instructions!

What is flash-modus?? How do I get there?

Is it the same as Recovery?

Help?

---------- Post added at 06:44 PM ---------- Previous post was at 06:41 PM ----------

Nevermind. Tablet will boot....

Trying to get CWM and such.

I do not understand what "flash-modus" is in the instructions...

I have followed the instructions but the program doesn't recognize the tablet...

Help?