yashsingh1/xdaforums huggingface dataset:
[Teclast X98 Air 3G] soudara:
You can downlad the fix from this url:

Inverted Camera FIX

You need to uninstall these three devices and reboot:

Kionix KXCJ9 Accelerometer SPB

Goodix Touch HID

Intel Graphics

Then after reboot install in this order from the attachment download in above link.

Intel Graphics

Goodix Touch

kxaccel-win8-x86-dbg-intel.exe and registry

Once registry entry is done and reboot monitor will be reversed. You must change registry to this value: 01 00 00 01 01 00 02

not working for me any idea i have c6j6 with dualboot
[Teclast X98 Air 3G] BoORDeL:
Wow,

more expensive than the tablet XD... waiting 4 ur results.

i've bought a standard samsung evo.
[Teclast X98 Air 3G] Hendrickson:
It won't I'm afraid, its connected up on a USB2 bus and my Sandisk 64GB Extreme plus which can do 80mbs on my desktop does around 34mb/s on my Teclast.
[Teclast X98 Air 3G] LVL91:
I bought it from TinyDeal, the exact same. I do have to warn you a bit. The first tablet I received from them was DOA, second that I have now is fine.

They are cheap and you can get free DHL. (second tablet had no DHL shipping fee)

Haha, yes it was €50. That's 1/3rd or it's price. BUT, I will use it in the future and I thought let's buy a fast card. I hate waiting :p
[Teclast X98 Air 3G] BoORDeL:
So a samsung evo should be the best choice ... (or equivalent)
[Teclast X98 Air 3G] ro11er:
Thanks for the info, so does it have hdmi or not?

Thanks
[Teclast X98 Air 3G] BoORDeL:
Page 9 post 88
[Teclast X98 Air 3G] LVL91:
Yes, I was expecting that. But I don't mind as I also intend to use it with my computer with a USB3.0 microSD reader. So transferring from computer to tablet should be fast :)

I want to transfer 1080P movies and the Samsung Pro card is probably faster in random read/write operation than other cards, which is also an important point.
[Teclast X98 Air 3G] Glamir22:
This is how my tablet looks like when it boots:

[IMG="Tablet screen"]http://imgur.com/VNkUFpw[/IMG]

"Press ESC in 1 seconds to skip startup.nsh, any other key to continue"

"Shell>"

I have connected the 2 USB sticks but it doesnt seem to do anything.

Any suggestions?
[Teclast X98 Air 3G] slekkas:
Is there an easy way to remove all Chinese bloatware? If not at least a list of safe apps to remove. Thanks
[Teclast X98 Air 3G] Kevin Do:
Still Failed

Still Failed.......So Tired :(
[Teclast X98 Air 3G] LVL91:
What bios does your tablet have right now? (android or windows bios?)
[Teclast X98 Air 3G] Glamir22:
It shows Teclast Windows logo when it boots, but Windows hasn't been installed completely yet, and I dont think its android anymore.
[Teclast X98 Air 3G] DedPehto:
Just freeze them one by one by Titanium backup...I freeze them all, no lags or errors!! Freeze=they dont appear in program list and they cant be started by system..nice feature))
[Teclast X98 Air 3G] slekkas:
I successfully removed all Chinese apps after I rooted. Can you tell me if I can still do the OTA UPDATES now that I'm rooted? If not is there an easy way to unroot?
[Teclast X98 Air 3G] LVL91:
Then you're safe I think.

Try to boot a windows installer from a USB stick and install windows. Use a USB hub and connect a bootable USB stick with windows along with a keyboard and mouse.

Before installing, make sure you have a full battery to avoid even more issues.

Make sure the tablet is in a safe environment (e.g. you won't hit cables and disconnect/interrupt communications)

If the USB stick won't boot, try to enter the bios for boot settings. Make sure to boot from USB first.

I think it can be fixed, so don't worry (yet). ;)

Good luck! And be more careful next time.:p
[Teclast X98 Air 3G] Glamir22:
Keyboard doesnt seem to work, I have an usb hub that needs to be connected to a computer to get its power, could that be a problem that prevents the keyboard from working?
[Teclast X98 Air 3G] Frontier:
Probably, because the X98 Air 3G OTG USB port does not have enough power to power both the keyboard and the hub.
[Teclast X98 Air 3G] Glamir22:
What I meant is that the keyboard is in use by my computer at the same time its connected to the tablet via the hub.

---------- Post added at 07:58 PM ---------- Previous post was at 07:30 PM ----------

I SOLVED IT!

It didnt boot from the usb sticks because the hub was not connected directly to the tablet, now I finally had the right OTG cable and I am running Windows now.

Thank you all for your help!
[Teclast X98 Air 3G] LVL91:
How is it possible to indirectly connect a USB hub????

Anyways, good luck with windows, its running really well at the moment for me. I don't think I want to go back to android now, windows seems so much smoother....

Also, I would have never thought to love Internet Explorer that much, it's just so much smoother compared to Chrome... Google really needs to rework chrome for tablets and other computers with little resources.

And I can't wait for windows 10:laugh::laugh::laugh:
[Teclast X98 Air 3G] Davercade:
That's interesting, I've just moved to Android, Windows is tempting so maybe that's my next move :)

Is the screen a bit more responsive out of curiosity?
[Teclast X98 Air 3G] robusto:
What the heck could be wrong now? I have flashed the dualboot, android as well and I am now trying to install Win8.1

I have two usb sticks, both attached to active usb hub, the install starts but always error I get an error message at the cmd window: "install.wim not found"

All the files are supposedly in the right folders, winpe every folder in the root folder, and used the bing image of windows and the files are on the images folder of the 8gb stick (tried with a homebrew win8 image as well, not working..)
[Teclast X98 Air 3G] namth56:
Edit: seems that this step is just for information only, just use the parameter from the guide. will try bypass and continue
[Teclast X98 Air 3G] abo.adam:
I have the same problem , if you find a solution tell me please , me too i'm trying ...
[Teclast X98 Air 3G] namth56:
Just bypass it. It is for information only. Remember to add PID and VID for android device. Then continue next steps
[MENTION=348215]petruccig[/MENTION]: can you update this? It took me a lot of time at this step. Another thing is, to flash dualboot bios in windows, just run the bat file. Can you update it, too?
[Teclast X98 Air 3G] jacfry:
Intel drivers update vs. camera fix

I installed a car race game under Windows (Asphalt 8: Airborn from Windows Store for free) to check if anything improved after changing bios to dual boot. It didn't change anything. After few minutes game froze just as on the original windows bios for C6J6.

Then I updated the intel drivers to the latest version, change the gsensor.reg and I could play quite long until it froze in a very same way a before. I'm not sure what's the problem but I've decided to leave the new driver despite the fact that the camera will be inverted.

I'm not a gamer and it was mostly for stability test, but If someone tried this game and doesn't have any issues or has similar to mine please share your experience. Maybe it's not just this game but this improvement applies to overall system stability.
[Teclast X98 Air 3G] mohamad_skiller:
i have this problem but i can solved it

just open manufacture tools open file menu go to the setting

Put this value to( SoC Devices: VID: 8087 PID:0A65)

Put this value to ( Androird Device: VID: 8087 PID: 09EF )

this vid pid must work just on c6j6

apply and ok it

- Disconnect the USB cable from the tablet and turn off your tablet (important)

then in Intel Manufacturing Tool and go to the menu File -> Open. There, choose the folder of ROM (X98_Air_3G_ (C6J6)), find the file "flash.xml" and open it.

you keep the tablet down the VOL +, VOL- and POWER until goto the dnx mode , connect the USB cable and Intel Manufacturing Tool begins the process of flashing Android ROM. Wait until the process is complete, disconnect the tablet from the USB and and turn of your tablet . connect the usb keyboard to the tablet and turn on your tablet you get shell command error again you just type exit and you see the tablet goto the android version when goto the android you must change your bios with ifwiupdate you can flash dualboot bios or new android bios from first post
[Teclast X98 Air 3G] abo.adam:
I write the vip and pid in the settings , and then i open the flash.xml , but the process not started , it still ready to flash but yet started , i tried to powered off , then on , then with vol-,+,power , but nothing happened , still ready to flash but not started yet !!
[Teclast X98 Air 3G] scrawl78:
Sorry, should have mentioned that. Only tested on Windows (Air 2 HG6N).
[Teclast X98 Air 3G] keepfishes:
For those with C6J6, under Windows 7/8 can just use:

Top row: VID: 8087 PID:0A65

Bottom row: VID: 8087 PID: 09EF

For other models I'm not sure but you can just try, don't worry I typed in wrong number and it didn't brick my tablet so should be fine
[Teclast X98 Air 3G] mohamad_skiller:
i have c6j6 and i have same vid and pid like you
[Teclast X98 Air 3G] trikst3r:
Can confirm these values are the same for C8J7
[Teclast X98 Air 3G] keepfishes:
If you have C8J7, no harm trying, don't worry it won't brick anything. :)

---------- Post added at 07:24 PM ---------- Previous post was at 07:22 PM ----------

Hey guys, are you all still flashing windows with the 2 USB sticks plus a hub and keyboard and mouse method?

Actually from long ago (because I have no hub), I've been flashing Windows using only one USB stick and nothing else. Yes, just one USB stick. It does setup and everything unattended. I find the hub method quite tedious and complex...
[Teclast X98 Air 3G] jcespi2005:
Nice... can you make a little step by step on creating this USB?

Thanks
[Teclast X98 Air 3G] mohamad_skiller:
you can just buying hub its to cheap 2 or 3 $

just connect mouse and usb disk to your hub and next you can install any windows version when complete installing windows you can install driver

its not complex at all
[Teclast X98 Air 3G] trikst3r:
I know, i was just letting people to know that C8J7 has the same vid, pid values.
[Teclast X98 Air 3G] supercowz:
Hello everyone !!!!

Those pid are same and working on C6J6 and C8J7...... And I guess for C7J6

If you have those model ... Use them directly, no need to check... They are all way the same...
[Teclast X98 Air 3G] keepfishes:
I didn't make it, but on the Chinese forum they give you wimboot images that you just download and extract and then copy and paste into your thumbdrive and it will be bootable from the tablet and it will install windows directly without any input. Pretty amazing really.

Here's one of them:

http://bbs.teclast.com/thread-258279-1-1.html
[Teclast X98 Air 3G] eltigroUK:
Some help needed here guys. Left my tablet running my onedrive sync with about 60% battery.

Thus morning it's completely dead. Won't turn on and had it changing for 4 hours or so.

Tried power button combinations but no luck.

Thus is a completely stock windows 8.1 with bing straight from aliexpress no modding.

You guys got any suggestions on what to do or how to open that's things up.

Might try to disconnect battery if that is easy.
[Teclast X98 Air 3G] ImJamIN:
Hi supercowz

Teclast give us original bios for C8J7, so can you verify that your bios that you have dumbed via sw is correct or we must use hw method to extract.

Just for test. Just to confirm that dumb bios via sw isn't the right method.

Thank you
[Teclast X98 Air 3G] G3n3R4L:
shouldn't we collect some bugs ? we keep explaining how to install since the first page, i think since we got the dual boot bios .... we can keep an eye on some bugs, till now from what i read really c6j6 devices are not the same ... some people have some unique bugs others have different ... shouldn't we work on the main issues now and try to solve, better than keep solving how to install all the time
[Teclast X98 Air 3G] BoORDeL:
completly agree with you
[Teclast X98 Air 3G] Hendrickson:
I have an idea for those that want more free space for Windows on the dual boot, you could go into Windows disk management and resize the internal sd card from 8GB to 4GB (If you didn't need the 8GB of course) And reduce the cache partition from 2GB to 1GB, this would give you about 5GB more for Win8.1/Win10 and as long as you don't touch system and boot etc of the android partition you should be fine.

However resizing you would loose what's on the emulated internal SD storage. So do this when you have just flashed Android.

I don't have a working Air 3G to test this, but I might have a new Air 3G soon to see if this works. And if I can reflash my old Air 3G with the programmer I'm going to flick it off on ebay, I'm not happy with my C6J6's touch screen hardware lag.

My AIr II = Ipad smooth touch response.

My Air 3G (c6J6) = stutter touch response compared to the Air II.

---------- Post added at 02:05 PM ---------- Previous post was at 02:01 PM ----------

Try this, hold hte power button down for over 10 seconds. Then try holding it for 3-4 and it should boot. Opening it is easy, you just have to use a plastic tool to pry open the plastic top from the metal bottom half. To disconnect the battery you have to solder the bat+ cable and disconnect it.
[Teclast X98 Air 3G] robusto:
Is there a way how I can access the bios on dual boot setting, without a keyboard? Winpe installation of windows didnt work, it didnt find the install file from the stick even though they were in the right folder. I made a single stick fat32 boot with rufus but it still doesnt boot, do I have to change boot options from bios? Plz help
[Teclast X98 Air 3G] G3n3R4L:
i had a problem with touchsettings, i copy the file into the inf, and once i go into android and then restart to go back to windows touchscreen flip again so i have to connect a mouse and copy the files again and then restart.

so i tried to uninstall the vga driver, and the kiodi touch driver and then installed the old driver which flip the camera .... and the touchscreen goes good after returning from android, but the clock there is an hour difference between windows and android.

anyone have any idea what can be ?

Edit: also with the old drivers i have 32 dedicated memory on vga
[Teclast X98 Air 3G] jcespi2005:
Can you upload the file somewhere on mega, can't download from the chinese forum, and Google translator make me laugh and don't help me much :silly:
[Teclast X98 Air 3G] jacfry:
Old driver is actually newer and in my case gives better stability (less freezes).
[Teclast X98 Air 3G] 84.hp.bluestacks:
this Teclast x98 air 3g really is pain in the ass.....

1. battery life is so damn short (around 4 hours+..... just playing candy crush soda and light surfing) and it take forever to charge it......the charger is also super hot during charging......afraid it will explode

2. stupid Teclast come out will so many version.....try to squeeze in whatever cheap component (those lucky one will get the good component)

my version is c8j7......still charging now....damn
[Teclast X98 Air 3G] supercowz:
Yeah I will do some test ...
[Teclast X98 Air 3G] G3n3R4L:
maybe some patch to revert the camera better than inverting the vga to fix the camera ....
[Teclast X98 Air 3G] jacfry:
Yes. The "camera fix" is just a temporary solution. For me camera is not as important as the vga drivers.
[Teclast X98 Air 3G] keepfishes:
Slide in from the right side, go to change PC settings, go to update and recovery, then recovery, under advanced startup, click restart now, troubleshoot, advanced options, uefi firmware settings.

---------- Post added at 10:24 PM ---------- Previous post was at 10:20 PM ----------

My internet at home is very slow, only 1Mbps... I asked my friend to download it for me haha. Maybe someone else with faster internet can help!
[Teclast X98 Air 3G] Hendrickson:
This is exactly what my Air 3G does, my Air II however is fine. Maybe its the firmware version used in the touch digitizer? Let us know how you get on with Teclast if they will let you help with a new touch driver. I'm lucky my 3D is fine. Is your Air 3G a C6C6 I take it?

Do you have this goodix android application you mention? Could you please share it, I can't find it.
[Teclast X98 Air 3G] jcespi2005:
Much appreciated....

Thanks ;)
[Teclast X98 Air 3G] LVL91:
Then your Air 3G is broken, I am sorry...

I got a replacement which is working very good btw. Try the Opengl 3.0 benchmark I posted somewhere. I also had gpu issues with that same tablet that had touchscreen issues.

Try to run the opengl test multiple times, see if it freezes. If it does, send it back and get a replacement.

Teclast never quite responded to my emails, I guess they knew about the problem...

I have a C6J6 btw. (my first broken one and my new one)

Good luck!

And the dual boot is awesome, going to install android and windows very soon! (with 4.4.4 lite rom and windows 8.1 pro image)
[Teclast X98 Air 3G] petruccig:
Hi guys,

I have updated the post #4 by adding a section FAQ because many of us had some difficults to complete the flash of the bios for dual boot.

Please if anyone has any suggestions for improving the FAQ section with some other mishap that you have met and exceeded, write asap that I update that post.

It would be interesting as well to add some warnings to avoid the brick of the device or to report defects that you are having while you use it.

Some people complain about a dramatic battery drain, can you confirmed please?

Thanks in advance
[Teclast X98 Air 3G] puzdar:
all drivers from my c6j7 air 3g win.

d-h.st/8GO cant post full links yet. use download button in middle

i just have installed all windows updates.

i have not installed any fix or new drivers or something.

all (3g, gps, cameta etc) works, display screen is 60hz
[Teclast X98 Air 3G] tumich91:
http://www.aliexpress.com/item/9-7-...Core-Tablet-PC-1-83GHz-Retina/1862203196.html

Official resseler offering Dual boot for 227$. Anyone know if Windows 8.1 has finally 60hz refresh rate and full working camera?
[Teclast X98 Air 3G] abo.adam:
flashing error

any one can help me !!

flashing from windows to android , teclast c6j6

-on the pc : Manufacturing Flash Tool get 10% then failed , error : time out to enum adb

-on the tablet : i get the DROIDBOOT , but in the lower left is written :

FASTBOOT INIT...

E:installer device ignored

FASTBOOT CMD WAITING...

E:Failed to mount device '/dev/block/sda1' as installer partition using fs_type 'vfat'

ition using f_stype 'vfat'

E:installer device ignored

E:installer device ignored

e:No valid installer medium found.

could not open /sys/devices/virtual/backlight

p.s : i noticed that when the tablet in DROIDBOOT , the pc don't see more the tablet ( in device manager there is not any any android device ) !!
[Teclast X98 Air 3G] supercowz:
Do you have SD card in slot if yes try to remove it...
[Teclast X98 Air 3G] abo.adam:
no no i don't have any sd in the slot of the tablet

---------- Post added at 04:54 PM ---------- Previous post was at 04:53 PM ----------

no i no i don't have any SD in the slot of the tablet
[Teclast X98 Air 3G] Informatic:
Has anyone managed to resize /data partition *without* reflashing the firmware?

So far I've tried Ubuntu, SystemRescueCD and GParted Live, but neither of these support USB host on that device (Grub works just fine, kernel loads, but they are missing rootfs...)

Any suggestions? Maybe some windows-based distro (I'm not really into these) that would have some tool supporting EXT4 resizing?

On a bright side, Rufus-burned image of Windows 8.1 Pro works just fine - tiny Windows icon shows up on a dualboot selection screen, even no need to use external keyboard. Only thing to remember is that you have to select FAT32 partition type (after some trials I found "GPT for EFI computers" to play well)
[Teclast X98 Air 3G] ro11er:
Can we also have a dump of your windows registry? If you need instructions please let us know
[Teclast X98 Air 3G] majkel_94:
Yes, someone has translated chineese instruction how to resize partition using WinPE ;)

Look for it on previous pages :P
[Teclast X98 Air 3G] heikkiap:
I flashed C6J6 for dualboot as I told in post #1716, from Win10, so, no Android, yet.

Managed to get the boot menu (only Win icon, as expected) and Windows works ok.

For the night I left the tablet connected to charger, I did shut it down from Windows.

In the morning I took it off from the charger.

After work, I tried to switch it on, did not manage, pressing very long the power switch. I also used vol- and other combinations, no work.

Charged it for 10 minutes and after that I could see the Android charging icon (partly red battery).

Charged it more and booted normally to Windows.

So, unexpectedly, the battery was drained in my tablet.
[Teclast X98 Air 3G] jacfry:
I had exactly the same experience during first night after flashing dual boot. It never happened again.
[Teclast X98 Air 3G] adrianhoody:
I can confirm battery drain - almost 30% in 1h on Windows 8.1 pro. I've a question. Can I reflash my bios with the older one under the Windows using .bat file from new bios, just rename the older to X98Air3GDuala.bin?
[Teclast X98 Air 3G] SUMMERBREEZE:
guys, could you please share that old and more stable vga driver for us? :good:

---------- Post added at 05:40 PM ---------- Previous post was at 05:39 PM ----------

is there such a software to compare the dumbed bios and info in it ?
[Teclast X98 Air 3G] G3n3R4L:
i have the whole package from the first post ....
[Teclast X98 Air 3G] heikkiap:
When reporting about battery drain problem, I am just wondering that battery meter shows 95% capacity, from practically empty state, in about 2 hours. If that is true situation, no compalining for long recharging time from me.
[Teclast X98 Air 3G] G3n3R4L:
I have only 1 gb free on windows partition, any luck resizing the android partition to 4 gb instead of 8 ?
[Teclast X98 Air 3G] SUMMERBREEZE:
guys this is a quick guide for how to use RUFUS (If you dont have any clue to create usb stick based on your Windows 8.1 copy)

http://www.techverse.net/how-to-create-bootable-usb-flash-drive-install-windows-8-1/
[Teclast X98 Air 3G] eltigroUK:
That long press / shirt press combination worked a treat.

I tried multiple long presses as thought it was stuck in some sort of sleep/hibernate but not a long /short combo, thanks again.

Kev
[Teclast X98 Air 3G] Grayie10:
Play store won't work

Hi , my play store wouldn't work and I deleted it think if I reinstalled it it might work , now I found out you can't even re install it , can anyone help. Or even tell me why it wouldn't work in the first place , I also deleted most Chinese apps , could this be the reason why ??

It's android 4.4.4 on x98 air 3G , if any one can help cheers
[Teclast X98 Air 3G] SUMMERBREEZE:
Please check the first page of this thread, there is google play fix there.
[Teclast X98 Air 3G] BoORDeL:
Use the chinese tool to free space from windows folder
[Teclast X98 Air 3G] Grayie10:
Thanks for your reply will check it out cheers , also do you know if there is any of the Chinese apps pre installed on t-pad I should or shouldn't delete because I wanted it mainly in English thanks again
[Teclast X98 Air 3G] SUMMERBREEZE:
Please tell us the device ID located on the back cover of your tablet. And then i will advise you to flash a LIGHT ROM which is chinese bloatware-FREE and gives more performance to your tablet..
[Teclast X98 Air 3G] jcespi2005:
There is a lite ROM for us with C6J6?

Sent from my OnePlus One ;)
[Teclast X98 Air 3G] SUMMERBREEZE:
here you are

https://mega.co.nz/#!KI8T0bBb!Pv25K1Rh0MJvXSCYQEC8P8l1mbsZQRgG6q5-XezP_aI
[Teclast X98 Air 3G] jcespi2005:
Many thanks, i think i have all pieces for dual boot, except an USB keyboard, arrives next tuesday...

Does this ROM have the Play Store fix?

Sent from my OnePlus One ;)
[Teclast X98 Air 3G] SUMMERBREEZE:
Nope, you need to do it yourself, please check this post :

http://xdaforums.com/showpost.php?p=56172506&postcount=2

And for dual boot, please dont start before reading here very carefuly :

http://xdaforums.com/showpost.php?p=56172528&postcount=4