yashsingh1/xdaforums huggingface dataset:
[Teclast X98 Air 3G] SUMMERBREEZE:
Thats a great app, i also knew it before.

Also try different frequencies for example 500 or 520 and try playin games! if it doesnt freeze, then you get more performance than before (than 400 mhz i mean)

---------- Post added at 04:21 PM ---------- Previous post was at 03:34 PM ----------

Command Runner app is here :

https://play.google.com/store/apps/details?id=com.ryo.commandRunner&hl=EN

just follow [MENTION=6315554]FrGeorge[/MENTION] 's post above, thats it. Its a very small app and only will work at boot and wont bother you anymore :good:

PS : try also different speeds, each device are different. Maybe your device will let you to play at even 600 mhz, just test and find the most optimal one for you :)
[Teclast X98 Air 3G] Franckydiam:
Inverted camera fix

Hi

I applied the fix as proposed, I have the problem of inverted monitor after the reboot, but I do not find a way to change the registry values. ("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")

Someone could explain the exact path in the registry and how to make the change.

thank in advance.
[Teclast X98 Air 3G] v0va:
Hi guys,

I just got the tablet.

Do you guys recommend re-installing Windows 8 on this machine?
[Teclast X98 Air 3G] rlego:
try use recovery from pc setting, it should fix this.

i have c9j7 version, and i'm very pleased. Everything works ok. I prefer windows, so i want to ask, how (if!) i can change partition proportion without re install anything. Now i have factory settings: ~ 50% for android, and 50% for windows.

Another question. Should i change default windows power plan? I'm working on balanced, and it's ok for "every night charging" with quite heavy use and screen brightness ~30-40%.
[Teclast X98 Air 3G] Perfectdevil:
Just got mine also C9J8 i couldn't be more satisfied!!!

I reinstalled Android from stock to custom rom [MENTION=2198172]mirek190[/MENTION], also reinstalled windows to windows 8.1 pro.... I gave android 8gb and the rest to windows(i know it's less for windows but i use 128gb sdcard)

My friend if you want to change partition proportions you HAVE TO reinstall EVERYTHING not just windows Android also(if you use dualboot)

Windows balenced power mode is more than enough for everyday use... If you want to game then change to performance power mode!!!
[Teclast X98 Air 3G] Graf Schmidt:
Is your sound hardware working perfectly?
[Teclast X98 Air 3G] Perfectdevil:
If you mean by sound hardware working perfectly that speaker and mic are working then yes

But for speakers they are not that loud
[Teclast X98 Air 3G] SUMMERBREEZE:
i think he ment to ask about gaming and 3D issues. Most of the tablets freeze at gaming sooner or later. By the way, use Viper 4 Android and see the difference and how loud the sound is :)
[Teclast X98 Air 3G] Perfectdevil:
Gaming not yet tested as i just got it

The freezes occurring in Android or windows... So I'll check!!!!
[Teclast X98 Air 3G] SUMMERBREEZE:
in both OS it can happen but mostly Android issue.

There are so many posts you can see about the problem.

Try this benchmark app at 1080p at least 6-7 times contuniusly. In android

http://www.mediafire.com/download/faoerw8cx35ft88/com.Maniac.UBenchEnhanced.apk

and if IT passes the tests without freeze, play Real Racing 3 at least 20 minutes (download from google play)
[Teclast X98 Air 3G] -vpa:
Reinstall is not needed. There is youtube video here, how to change language in system, completely, you've add and changed new language only for one user not for all system, I think. There is needed change default language for new users and for system too.
[Teclast X98 Air 3G] Graf Schmidt:
No, I really meant speakers, because mine are not working.

---------- Post added at 06:41 PM ---------- Previous post was at 06:39 PM ----------

Ok, did you test speakers before installing custom rom ?

And one other question: you have dual boot, with custom rom and new win8.1 are there any chinese left? :D
[Teclast X98 Air 3G] SUMMERBREEZE:
i think you are the only one who has this issue. maybe it is a defected device.

maybe consider sending it back or ask refund
[Teclast X98 Air 3G] Perfectdevil:
Chinese gone after flashing custom ROM and fresh windows!!! Yeah i tested speakers before and they were working!!!

I suggest that you flash custom rom and fresh windows and check speakers!!

Instructions are in the first post in dual os section
[Teclast X98 Air 3G] Graf Schmidt:
Yep, I'll wait till EtoTalk guys answer.
[Teclast X98 Air 3G] SUMMERBREEZE:
what about the drivers after fresh windows? which one did you use?

is everytthing working including touchscreen, sensor and camera?
[Teclast X98 Air 3G] slawekxc1:
Hi guys, i have a bootloop after instaling xposed framework. My device is c9j8 dual boot. Windows start normally. Thre's any solution for fix this without deleting whole android? Maybe some magic fastboot command :D ? Sometimes tablet get worked for few seconds, ( 3 - 5) but there's to little time for delete xposed framework. Xposed installer made a zip with original binaries files, but i have no idea how to intall it from fastboot.

P.S sorry for my english !
[Teclast X98 Air 3G] Perfectdevil:
Fresh install nothing work no touch no Wi-Fi nothing... All Drivers for windows 8.1 are in the first post

---------- Post added at 08:57 PM ---------- Previous post was at 08:55 PM ----------

Read the first post in ANDROID DEVELOPMENT there you find how you install xposed the correct way
[Teclast X98 Air 3G] SUMMERBREEZE:
you mean these drivers yes? not [MENTION=1167021]Hendrickson[/MENTION] 's backup drivers?

https://mega.co.nz/#!tJdHCIAT!agSun8Wa1tOx_3tL8YMuS19j1i5wWG2WUJPprmTbTCs
[Teclast X98 Air 3G] Perfectdevil:
Yes these drivers..... When you start making windows on usb make sure its GPT partition not MBR and when the usb is ready copy these drivers to usb so when windows is finished installing you install drivers directly one by one
[Teclast X98 Air 3G] SUMMERBREEZE:
sukran :)
[Teclast X98 Air 3G] Perfectdevil:
La shukra ala wajib my friend
[Teclast X98 Air 3G] slawekxc1:
I rode it, but i can't run android, only windows or fastboot mode.
[Teclast X98 Air 3G] Perfectdevil:
Then you should install everything from scratch!!!!!
[Teclast X98 Air 3G] slawekxc1:
OK, x98 work :cool: It's possible to run android in safe mode. In this mode there's no acces to downlooaded and installed apps, but we can unistall it. Uninstaling xposed installer solved the problem.

For enter to safe mode we have to hold both volume keys ( + and -) when android starts.
[Teclast X98 Air 3G] LainSzvahl:
Ok seems cant get any one to help me on the Windows bing issue of it being all chinese as its single lang install

or the part that using the bing version on OP's thread deletes Android side as well, wish it would stop that.

OK my issue now is i installed my windows 8.1 but the Power button does nothing! when my display turns off

i cant do anything to get it to turn back on, Was there a missing driver for that in the thread somewhere? anyone know

i hate having to disable sleep mode and the Display power management because the tablet has no other buttons

to wake up the tablets display from standby
[Teclast X98 Air 3G] Perfectdevil:
Guys can you please check and tell me how much battery mha you have??? On papers this tablet should have 8500mha but CPUZ (ANDROID) SAYS IT'S only 5500mga

Please confirm!!!!

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G

if any answer helped you please hit thanks for me!!!

---------- Post added at 10:17 PM ---------- Previous post was at 10:04 PM ----------

You probably followed the full windows 8.1 convertion rather than dualboot installation.

Yiu see in OP thread there's 3 sections: -full android convertion(android only), -full windows 8.1 convertion (windows only) ,- dualboot OS convertion (Android +windows)

Maybe you missed a driver you didnt install. Here's full drivers for windows 8.1

https://mega.co.nz/#!tJdHCIAT!agSun8Wa1tOx_3tL8YMuS19j1i5wWG2WUJPprmTbTCs

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G

if any answer helped you please hit thanks for me!!!
[Teclast X98 Air 3G] Fantomas99:
Flashing ROM stopps at 90%, "Could not open /sys/devices/virtual/backlight"

Hello

After fullbrick of my X98 Air 3G i had to flash the Bios by using a SPI flasher on the "open heart" of my X98. Android->Brick-> Windows -> Dualboot Windows/Android-> Android. When i try to flash a custom Android ROM, i always get the error message "Could not open /sys/devices/virtual/backlight" and flashing stopps at 90%. I tried changing PC and USB cable, but still no success. When i use Mirek190's ROM, flashing continues after a while, but i am not shure if flashing was correct, because e.g. i have no shutdown menu when i press the power switch. Also bottom bar looks wired, i have a square, circle and an arrow.

Pls help!
[Teclast X98 Air 3G] grigoris_a:
If you are in a boot loop press quickly the power button 5 times to disable xposed.Then follow guide in first post.

Στάλθηκε από το X98 Air 3G(C6J6) μου χρησιμοποιώντας Tapatalk
[Teclast X98 Air 3G] codezion:
Has anyone else confirmed this news? I don't think this is true. I emailed OKQI and their response was that they are not aware of this.
[Teclast X98 Air 3G] mirek190:
Every day close and closer to built fully working cwm .

Now is mounting partitions but is restarting itself after 30 seconds[emoji33] [emoji24] [emoji43] ...I find out today that I have to apply some patches to cm 11 source ehhhh.
[Teclast X98 Air 3G] LainSzvahl:
Seems i might have but there is this section

Whatever the case, make sure your USB Drive is formatted as FAT32! Very important!
I used this wimboot image that automatically uses WinPE to get through the whole install process automatically without needing a single mouse click, which also has all the drivers and everything installed and working properly:
Waiting for repost on mega...
Link: http://pan.baidu.com/s/1hqIfAle
password: zhec
Extract the downloaded files and then copy all the contents into the root of the USB Drive. NO NEED FOR RUFUS!

i would like to download that from baidu but not understanding any of the language there when i click to download it, it attempts to download baiduyunguanjia_5.1.0.exe which im guessing

is some download manager or a virus.. either one, dont need some download manager and it hasnt been reposted to mega, anyone got a repost of this particular one on mega?
[Teclast X98 Air 3G] vpx:
As I read here, there is no shutdown menu in Mirek's ROM, maybe that these bottom buttons are correct too, search forum.
[Teclast X98 Air 3G] Hendrickson:
Seems legit to me. It makes sense,there is a demand for a 64gb version and Onda is making 64gb ones. I hope its a black 64gb model.
[Teclast X98 Air 3G] codezion:
That certainly would be great news. That referenced site mentioned that the 64gb version would be available on 28th. I will order one if that's the case. I wonder why the distributor wasn't able to confirm.
[Teclast X98 Air 3G] droutis:
Which driver should be installed to Viper? It asks upon execution.

---------- Post added at 01:34 AM ---------- Previous post was at 01:29 AM ----------

Just found out a nice trick 4 dual boot owners: if u want yr tablet every time to enter upon reboot the dual system selection menu, all u have to do is to tick the field on the upper left corner of the screen, next to the smaller icons of Android and Windows. Maybe not everyone knows this..
[Teclast X98 Air 3G] HDtracer:
You can disable xposed at boot by repeatedly pushing a hardware button as the tablet beginsvto boot. Vol +usually works for me.

---------- Post added at 12:43 PM ---------- Previous post was at 12:39 PM ----------

Button bar looks like that because he changed the buttons to android Lollipop looks
[Teclast X98 Air 3G] SUMMERBREEZE:
is there such driver option exists?

A9/15 with NEON

if yes, pick that one
[Teclast X98 Air 3G] antony84:
I will have a dual boot by stock in my tablet, but i don't want dual boot, i would install only windows in my tablet, windows 8.1 Pro or windows 10.

I need to change bios to get it? Which bios?

Or simply i have to install windows from usb stick?
[Teclast X98 Air 3G] mirek190:
You can use my rom and partition table called - windows only.then you get all memory on windows 27 GB - instalation android won't be possible until you change partitions again in the future.

And yes windows from usb stick - you need windows iso and Rufus app to make usb stick with windows.
[Teclast X98 Air 3G] antony84:
Thank [MENTION=498128]marek190[/MENTION] for answer. Could you be more explicit, please?

What do you mean with use my rom? Should i install it?

Why all memory 27GB? Shouldn't be 32GB?
[Teclast X98 Air 3G] Akitoyo:
You can do it mate:P
[Teclast X98 Air 3G] terakunomiya:
here i found a review for onda v919 3g air dual boot.

http://www.gizmochina.com/2015/01/21/onda-v919-review/
[Teclast X98 Air 3G] bibi63:
Can I install original bios back? Now I have dual bios.

Thanks.
[Teclast X98 Air 3G] SUMMERBREEZE:
I dont think it can beat Teclast X98 Air 3G. even with 64 gb emmc capacity..

first of all, it has only 7000 mah battery and also poor battery performance. no HDMI output.
[Teclast X98 Air 3G] Perfectdevil:
Why would you want the old bios back??

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G

if any answer helped you please hit thanks for me!!!

---------- Post added at 07:58 AM ---------- Previous post was at 07:55 AM ----------

Guys CPUZ on android says i have only 5000mha!!!! Anyone please confirm!!!

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G

if any answer helped you please hit thanks for me!!!
[Teclast X98 Air 3G] bibi63:
No need windows and battery drain. With old bios I dont have problems with battery.
[Teclast X98 Air 3G] thehobit:
Wronk link to Win Pro

This seems to be a wrong link from the first page. Anyone has the proper link?

"Here also a Windows 8.1 PRO version with drivers and English/French language pack (thanks to supercowz): Win 8.1 PRO with driver and eng/fr language pack"

I'm trying to reinstall the stock version of Win 8.1 bing Edition, installing from within windows can't be completed successfully. Creating bootable USB did not work either, device booting from windows and not from the USB. Any hint?
[Teclast X98 Air 3G] agunghost:
Yeah, mine is the same as yours.

You don't have to believe everything from just an app. They just pull out the string from the system and it could be misleading.
[Teclast X98 Air 3G] so_ang:
I already use Dual OS for a month

If I want to update from 4.4.2 to 4.4.4 , Is it need to in stall from the first step ?
[Teclast X98 Air 3G] HDtracer:
If you use either of the two custom 4.4.4 ROMs on the first page you can flash/update just the android system image without affecting the windows or android partioning.

Just open flash tools and select the .XML file for system only.
[Teclast X98 Air 3G] lrobberl:
It's the same for me! Do you guys think it's the problem where some cells are not recognized? How can I check the battery in Windows? What program would be go for that purpose?
[Teclast X98 Air 3G] Perfectdevil:
When you preparing usb for windows are making it NTFS and GPT partition???

This is the correct way not MBR as OP THREAD!!!

if any of my replies helped you hit a thanks for me!!!

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G
[Teclast X98 Air 3G] supercowz:
all my files here

https://www.youtube.com/watch?v=qxpU_hFup64
[Teclast X98 Air 3G] germancf:
First sorry for bad English. :D I received the tablet and I could use it as normal until being in android and internet browsing I was frozen and had to force it to turn off. Once in android again I see DOES NOT work TOUCH SCREEN :eek:, I have to use a mouse to use android. In windows and dual menu if it works normal.

I follow the tutorial to change the rom, I used the two in the tutorial (c6j6) and still not working the touch (android) :crying::crying:
[Teclast X98 Air 3G] juaaslo:
Hello,

If yoiu already have dual boot bios and Android and windows installed, then you need to go to bios in order to start from USB stick.

Just switch off completely the tablet, and before switching on, connect a usb hub with keyboard and USB stick. When pressing start, press esc key in the keyboard to go to BIOS. Then, in the third menu called "save and exit" and in "boot override" options, choose your USB stick (I think UEFI and loger name to detect it".

After that, tablets restarts into USB stick for fresh windows install.

BR
[Teclast X98 Air 3G] HDtracer:
Have you tried reflashing your bios? That should contain the touch screen drivers.
[Teclast X98 Air 3G] Perfectdevil:
I have the C9J8!! And you?

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G

if any answer helped you please hit thanks for me!!!
[Teclast X98 Air 3G] germancf:
Yes. I returned first to install dual bios, then android with partition and then windows but not work touch screen in android
[Teclast X98 Air 3G] thehobit:
Thanks, juaaslo, supercowz, Perfectdevil.

1. Downloaded the ISO from supercowz link

2. Used Rufus to create bootable USB (NTFS as recommended by Perfectdevil)

3. Entered the Bios and choose UEFI OS in Boot override menu.

The tab still does not boot from the USB strick.

Any hint?
[Teclast X98 Air 3G] Perfectdevil:
in RUFUS make sure that partition scheme and target system type set to <GPT> and file system as <NTFS> like attached picture

them am sure it will boot up
[Teclast X98 Air 3G] grigoris_a:
You have to use Fat32 not NTFS .GPT for UEFI is correct.

Στάλθηκε από το X98 Air 3G(C6J6) μου χρησιμοποιώντας Tapatalk
[Teclast X98 Air 3G] Graf Schmidt:
DUAL BOOT on SD card

Is it possible to create a dual boot this way? : android on internal storage (no partitions then), Windows 8.1 on SD card.
[Teclast X98 Air 3G] moonmilk:
Some weird things happened to my tablet... few hours ago I tried Asphalt 8 on android and it kept freezing when i was playing.. But now after few hours later I tried again and the freezing issue is gone...

Update: and now the freezing issue is back... wanna file a dispute :mad:.. should I?

C9J8 model
[Teclast X98 Air 3G] thehobit:
Thanks, it did work eventually, the problem was unstable USB hub.

Once USB is properly recognizable, there is additional boot option in the BIOS.

However, installation does not allow upgrade but only fresh install.

Question: if fresh install, how do I maintain the key (which maybe a different version of Windows?)

Or I do not need a key?
[Teclast X98 Air 3G] lrobberl:
C9J7
[Teclast X98 Air 3G] Perfectdevil:
fresh install doesn't maintain the previous key....!!!!
[Teclast X98 Air 3G] thehobit:
Makes sense, I assume I can't use the same key since I'm installing a pro version while the stock is "win 8.1 with bing" which is likely to be different.

Ideas?
[Teclast X98 Air 3G] Perfectdevil:
i have same version as you C9J8....maybe its just a overheating problem!!!

did you apply 3D GAME FREEZING FIX in OP first THREAD
[Teclast X98 Air 3G] gnegne:
Untethered CWM for Teclast X98 Air 3G (C8J7)

Untethered CWM for Teclast X98 Air 3G (C8J7)

Hi,

I did some recovery image cooking and integrated the following components:

1) Recovery Image of Teclast X98 (C8J7) ROM2.02

2) Tethered CWM package IntelAndroid-FBRL-01-17-2015.7z made by @social-design-concepts that includes the cwm binaries from

3) Dell Venue 8 CWM Recovery made by @vampirefo

I did this for educational purposes and the functionality is not intensively tested. In case of faulty

behaviour you should know how to recover the original recovery image that is included in the Teclast ROMS.

If you want to dig into the image you can extract the content using this tool Android Image Kitchen 2.0

You can flash this image using the normal procedure using fastboot (fastboot flash recovery ...) or flashify

Download

Recovery Image for Teclast X98 Air 3G (C8J7) with CWM

Issues

- screen is upside down (this issue cannot fixed by me since I do not own the source of the binaries)

Credits

@vampirefo

@social-design-concepts

best,

gnegne
[Teclast X98 Air 3G] Akitoyo:
Has anyone tried [MENTION=2198172]mirek190[/MENTION] new bios yet?
[Teclast X98 Air 3G] airtec2014:
Set time

To avoid missing the correct time.

Set time in Windows 8.1
[Teclast X98 Air 3G] Perfectdevil:
a link please ti this new bios!!
[Teclast X98 Air 3G] Graf Schmidt:
[MENTION=4715094]Perfectdevil[/MENTION]

It's the 1.05 modified BIOS extracted from my C9J8, but [MENTION=2198172]mirek190[/MENTION] said it should be used with caution and only with flashing hardware in order to avoid bricks and test it.

Can anyone answer my question? Is it possible a dual boot with android on internal storage and win8.1 on sd card? Or both OS must be located in internal storage?
[Teclast X98 Air 3G] juaaslo:
Hello,

i never read about this option. I think only possible to use SD for moving Android applications, and also installing desktop applications in SD for windows. But both OS should be in internal memory. But it would be great if u are right and this option is available!!!
[Teclast X98 Air 3G] space85:
flashing only android with custom rom error

Hi guys,

my first post here, even I'm reading this forum for years. Thanks for what you do.

I just got my Teclast X98 Air 3G Dual boot C9J8 and wanted to update only the Android to custom rom. For this purpose I selected mirek190 rom v3.1 C9J7.

I read all the advises on the first page section Win 8.1 -> Android, ignored the DnX BIOS as I dont wanted to have just Android on the tablet and continued with IMT, Custom INI, PID, VID and started to flash using SYSTEM only.

It was not successful. Flashing started and I got these messages:

In DnX mode:

Waiting for fastboot command...EFILINUX [ 0.00000 ERROR [get_path:332] Couldn't find boot device handle

Continued:

E: Installer device ignored

FASTBOOT INIT...

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

I didnt tried any other ROM, but I reinstalled and installed the tools more times, changed USB ports and not sure what to do to be successful.

The only think that could be wrong - that comes on my mind is Mirek's ROM is C9J7, mine tablet is C9J8. Second thing, I ignored DnX Bios.

Please help and advise me, how to he successful and how to flash custom ROM.

thanks a milion.

P.S. Sorry for my english.
[Teclast X98 Air 3G] vpx:
I think it is possible to use Windows from SD card, but I think there has to still be small partition in internal storage with boot loader, because I did not find option to boot from SD n BIOS. But I can't find good reason to do it, because speed of SD is very low.

If you need more space, you can destroy 5 GB NTFS recovery partition (I did it through diskpart, then extend original Windows partition). You loss possibility to recover system without other tools(USB stick), but 5 GB of space more is good reason for doing this. Now I have more then 8GB free space on Windows Pro 8.1 partition and have installed Office 2013 Pro Plus on SD card (certainly no game installed :().

Another option is mount .wim as drive and boot from it (wim file saved on SD)
[Teclast X98 Air 3G] Perfectdevil:
Did you root you device first?

sent from either my XPERIA Z2 or TECLAST X98 AIR 3G

if any answer helped you please hit thanks for me!!!
[Teclast X98 Air 3G] Graf Schmidt:
I'll have to study a bit better the complete format of Teclast in order to install custom ROM and Win8.1 again, so it may be a n00b question: does that 5 gb recovery partition comes with stock and it should be better to leave that there, or it could come with any new installation of win8.1?
[Teclast X98 Air 3G] juaaslo:
Hello [MENTION=509009]vpx[/MENTION]!!!

I wasn't aware at all of this. Could you please explain a bit more or a link with info? Is this "hidden" space of windows installation? Is is disk space used by teclast and not available for windows nor android??
[Teclast X98 Air 3G] mirek190:
You know that PID and VID you have to set up for DNX and later for fasboot as well ?