[Teclast X98 Air 3G] petruccig:
DUAL BOOT FAQ + HARDWARE AND LOW LEVEL FIXING​

FAQ

1)Q: While in Intel Manufacturing Tools and trying to flash, the progress bar is stuck at X%

The flash tool does not like funny characters ,should clear up some confusion as to why things aren't working.So before to flash please try removing the chinese characters from the file name. It screwed you up on something else having chinese in the name.

At 0%

: Well, reconnect your device again, check your VID and PID values in settings, check if your drivers are properly installed, replace a cable if it is faulty, check that you're in DNX mode, basically, the flashing didn't even start.

If you have the right pid/vid from the device manager,unplug the device, close the app and restart it, select the flash.xml (should say ready to flash) then plug the device in while in DnX mode and it should begin.

At 5%

: Mostly due to the fact that "Custom_config.ini" was not copied to the IMT directory, or there are some other programs that is blocking the progress, try changing a computer and flash again.

At 10 or 11%

: Mostly due to wrong settings or parameters, check Device Manager in Windows for any missing drivers, check that the downloaded ROM is not damaged, or that the tablet is not already bricked. Also, this software is very sensitive to the USB port that it was first installed on, so try plugging it back to the same USB port that you plugged it during the install process. (Yes, you have to plug the device in during the install process, if you missed this out, uninstall all the drivers and redo the installation properly).Sometime help to try a different ROM, just to clarify you have copied the "custom_config" file to the Intel Manufacturer Tool folder right. It should get to 10% for about 5-10 seconds then make a disconnection sound and suddenly jump to 15% and continue.

At 89 or 90%

: The files written at this stage are larger, so it might take a while longer, but if it is really stuck here, probably the USB cable is faulty. Replacing a cable and flashing again should solve the problem, or just simply leave the tablet and cables still (do not move them around) and try again.

If the flash freezes

at 90%

a solution could to be increase the timeout values in the program facturing flash tool.

At any other points: Might be due to faulty cables, or simply just try again!

2) Q: I flashed android bios, now I can not get in to droidboot mode by pressing Vol + and POWER. The tablet always gets into EFI shell command interface. I can only get to DnX mode by pressing VOL+ , VOL- and POWER. Any solutions?

A: Follow this steps valid for C6J6 and C8J7 model :

Open Intel manufacturing tools,then open file menu and go to the settings.

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

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

Click on apply and then on ok.

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

Download the Android 4.4.4 ROM for C6J6 and C8J7 by supercows (link above)

Then in Intel Manufacturing Tool and go to the menu File -> Open. There, choose the folder of X98 Air 3G (C8J7.C6J6) lite 4Gb or 8GB and choice "flash.xml" for your device 4Gb or 8GB and open it.

Keep pressed VOL +, VOL- and POWER button until the tablet go to 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 off your tablet .

Connect the usb keyboard to the tablet and turn on your tablet, you could get shell command error again

Just type exit and you see the tablet go to the android version

When go to the android you must change your bios with ifwiupdate and you can flash dualboot bios or new android bios from first post

3) Q: I have problems getting into Android from the dual boot menu! Windows is okay.

A: If there are any problems getting into Android from the dual boot menu, change this option in the BIOS. Change "Boot Architecture" to "OS Boot Menu Only".

View attachment 3048901

4) Q: After shutting down the table in Windows, it takes very long before I can power it on again.

A: Turn off "Fast Startup" option in Windows Power Options. Another way is to navigate to "C:\Windows\System32", find "SlidetoShutDown.exe" and use that to shut down.

5) Q: The time in Android and Windows is not synchronised!

A: Go to "Run", type in "regedit", then navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation

Add in a new REG_DWORD, "RealTimeIsUniversal" and set its value to 1

6) Q: I plugged the tablet into the charger and it shows as charging but after a while I noticed that the battery percentage dropped!

A: Check the cable, it should be of good quality and as short as possible. Original teclast cable is good, not too long and thick enough. Best to use short cable of 5cm. This is due to high current and low voltage of the tablet.

7) Q: I'm on Android 4.4.2 and this tutorial needs me to upgrade to 4.4.4. How

A: Go to post #2, download the 4.4.4 ROM from there, start by following the tutorial from the line "WINDOWS 8.1 => ANDROID PROCEDURE (thanks to Frontier)" onwards all the way until you reach GOOGLE PLAY STORE FIX (thanks to Frontier). If you see the line "From Windows host -> Android guest (conversion to Android tablet)" in the tutorial, do not worry, because this process is used for both purposes, from Android to Android or Windows to Android, both are applicable.

8) Q: I flashed my tablet to dual boot OS already, but now I want to reinstall only one OS! How can I do it without having to reinstall everything?

A: If you want to reinstall Android only (leaving Windows unharmed):

One way is to flash just "system.img" through the Intel Manufacturing Tools (try this way first).

Download from here the zip named "ONLY FLASH system.img": http://1drv.ms/1s8dci8

Replace the "flash.xml" in your ROM folder with the one in this version.

Then flash as per normal using IMT.

This "flash.xml" will instruct the IMT to flash only the "system.img" file which is Android OS.

If that doesn't work, we will try flashing all components of the ROM without re-partitioning the whole eMMC,

Download from here the zip named "ONLY FLASH ANDROID PARTITIONS": http://1drv.ms/1s8dci8

Replace the "flash.xml" in your ROM folder with the one in this version.

Then flash as per normal using IMT.

If you want to reinstall Windows only (leaving Android unharmed):

Prepare your USB Drive with the Windows image.

Boot into Windows first, then restart and plug in the OTG cable, USB HUB, keyboard, and USB Drive.

Enter BIOS by pressing "ESC" key during boot and under the "Save and Exit" menu, scroll down to the "Boot Override" option, find the USB drive and select it to boot from it. The BIOS restart the tablet and will boot into the USB Drive so Windows install should start.

Remember the USB bootable stick must be created with Fat32 file system and GPT table partitioning.

9) Q: Help! My touchscreen is inverted!

A: (Thanks to [MENTION=5695877]krisbliz[/MENTION]):

Download the files from [MENTION=5695877]krisbliz[/MENTION] post here, and copy the files into C:\Windows

now run gpedit.msc

computer configuration

scripts (startup/shutdown)

startup

add

browse for reset driver.bat

10) Q: How to reinstall windows without reinstall android ? I cannot change the language and even updates from winddows update,every time when I put usb prepared and trying to install windows it working installation and after 65% shows installation error 0xc1440137 0x2000c and going back to previous instal (chinese) to windows

A: (Thanks to [MENTION=5579375]mohamad_skiller[/MENTION]):

Connect usb keyboard and usb windows instalition to your hub then

Enter BIOS by pressing "ESC" key during boot and under the "Save and Exit" menu, scroll down to the "Boot Override" option, find the USB drive and select it to boot from it.

The BIOS will boot into the USB Drive and Windows install should start.

11) Q: I have installed dualboot bios with a success. When I plug in usb to install the IntelAndroidDrvSetup1.5.0.exe, in the boot menu I can see a Windows in the right center of screen and in the right top corner two small icons of android and windows which I can check. I dont see Android logo in the center of screen?

A: (Thanks to [MENTION=281521]jcespi2005[/MENTION]):

Sounds you install windows on top of android partitions.So check what partitions do you have in windows partition manager...If you deleted the android ones, you'll need to start over starting installing android again.

In any case, make sure you've followed these steps correctly:

blackman818's tutorial

12) Q: Why Microsoft Store doesnt work?

A: (Thanks to [MENTION=281521]Hendrickson [/MENTION]):

Run the troubleshooter (Search and type trouble shooter) And run it for the Store, this should re-install the drivers

13) Q: Why camera doesnt shows anything (the screen turns black and i have to exit to desktop)?

A: (Thanks to [MENTION=281521]Hendrickson [/MENTION]):

Reinstall the camera.inf and OV and GS camera drivers from the Air 3G drivers

14) Q: I can't use touchsceen and also screen rotation is not working. During installation , Windows stopped at language selection ,i had to connect usb moude and keyboard to make selection, is this normal?

A: (Thanks to [MENTION=281521]25gee [/MENTION]):

Yes,continue the installation and use drivers zip on the first page.Install the driver under gyroscope and run the registry file.Go into device manager,find the unknown device,install drivers and point manually to the drivers folder (it will install but fail to enable,this is normal) from here simply right click on the display,disable it and reenable, you can do the same with the 2 I/O devices for the orientation and accelerometer to fix the inverted screen rotation

15) Q: I partitioned my 32 GB SD card and formatted the smaller partition EXT4. Link2SD recognized the partition but it "fails to create MOUNT SCRIPT.

A: (Thanks to [MENTION=281521]kinhvanhoa [/MENTION]):

Probably you forgot to format your EXT4 partition on the SD CARD as "PRIMARY PARTITION."

Please make sure the EXT4 Partition which should be smaller than FAT32 partition, must be set as "PRIMARY" (FAT 32 as well).

Then, use LINK2SD on the Rooted Android, it works fine and allows apps to be moved to the EXT4 partition on the SD card.

16) Q: How can i change the intel turbo mode on to off? How can i enter in the bios mode? Only few games works, others freeze!.

A: (Thanks to [MENTION=281521]SUMMERBREEZE [/MENTION]):

Find an USB keyboard first and plug OTG cable to the tablet and turn it off. Turn the tablet on and immediately press ESC button. And follow the images (bios_1 and bios_2) i attached and do the settings carefuly. f4 save & exit

17) Q: I have problem with the dual boot bios, now I don't arrive any more to the page where there are the icons of the Android and Window (that I never saw it). Please could anybody known what happens, I am stacked on the installation of windows?

A: (Thanks to [MENTION=281521]grigoris_a [/MENTION]):

From switched off press power button once to boot and keep holding vol up key pressed

18) Q: I have installed dualboot bios with a success. The icon of windows is not showed,why?

A: (Thanks to [MENTION=233178]grigoris_a[/MENTION]):

If you don't see windows icon it means the USB is not bootable.Try getting into bios and see if the USB drive is detected and check the file system on your windows usb drive it should be FAT32. Often the problem is inside the bios, maybe is enabled the options the EFI format on the boot option, disabled it the icon of windows appears and then you can started the installation.

18) Q: I start from Windows 8.1 then I installed the Dual Boot Bios (No problem).

I restart to the bios, power down the tablet and power up again and use the Windows 8.1 again (without reinstall anything) with 60hz. Everything perfect but... right now I cant install android because my tablet is not recognize by the PC I power off by pressing 10 seconds the power button. Then while its connected I power it up and shows the battery meter but the PC dont do anything so I cant use any program to flash android, any idea? I tried different cables and nothing

A: (Thanks to [MENTION=5653798]Petepe10[/MENTION]):

This is the normal way, do not know about dualboot though: Power up (vol up down power press) until screen shows dnx mode, and then connect cable. Flash starts automatically (provided pc is ready to flash of course)

19) Q: How to switch from an OS to another?

A: (Thanks to [MENTION=285804]BPM[/MENTION]):

Power off the device and then press and hold vol+ and power until you see the bootmenu

20) Q: On the lockscreen in Windows the text in the lower right corner is chinese.

Sometimes there pops up chinese messages in the infobar (lower right corner in windows - left to the clock).How can i remove this?

A: (Thanks to [MENTION=4790007]smartchip[/MENTION]):

On Control panel : Clock, Language and Region : Language : Change date, time or number formats. On Formats tab - Match Windows display language (should be default). On Location tab - change "Home location" to get your Start Menu tiles to load news, recipes, etc from your country (open the apps when you're done and refresh). On Administrative tab - "Welcome screen and new user accounts" click "Copy settings", apply to all.

21) Q: I have teclast x98 air 3g dualboot version but accidentaly i touch in corner to swich off choosing the system, now i have only android.How ca I return to dual boot menu?

A: (Thanks to [MENTION=4790007]smartchip[/MENTION]):

Hold power + volume up to power on. You'll get the menu back

22) Q: On Windows is there any way to hibernate the tablet? I try to hibernate but doesnt works well,the tablets power off but you have to press power button for 10s to power it up again, and you start windows normally?

A: (Thanks to [MENTION=4912706]seba2000[/MENTION]):

Make a shortcut on your desktop to C:\Windows\System32\rundll32.exe PowrProf.dll, SetSuspendState Hibernate

and save it as "Hibernate" for instance.You can pin it to start as well.When you will run this shurtcut tablet will hibernate. Remember that after you will run this command (shortcut) you need to wait a bit before you will be able to switch on again (10-15 sec) . Do not try to switch on immediately - Windows needs time to dump all data from RAM to hard disk (need time to hibernate). In this tablet there is missing any led which show disk activity so you just need be patient.

After 10-15 sec you will be able to switch on by single power button press.

If you want add hibernate and sleep option in Windows, follow the vpx tutorial

23) Q:Why there is one hour difference between android and windows ?

A: (Thanks to [MENTION=4209657]G3n3R4L[/MENTION]):

Hit Start and type regedit.exe in the search box. Hit Enter and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\TimeZoneInformation. Right click anywhere in the right pane and hit New > DWORD (32-bit) Value. Name it RealTimeIsUniversal, then double click on it and give it a value of 1.

and done, time in windows is exactly the same as android under the correct time zone.

If you want to do these steps automatically you can use this reg file: abanglek's X98DualClockFix.zip

25) Q:Windows only reporting 1 battery cell, battery gets stuck at 7% for a few hours as mentioned previously here. Did anyone manage to fix the issue in Windows?

A: (Thanks to [MENTION=233178]grigoris_a[/MENTION]):

1.Fully charge the tablet

2 Run cmd as admin and paste this command

powercfg-setdcvalueindex SCHEME_CURRENT SUB_BATTERY BATACTIONCRIT 0

3 Use the tablet until it shuts down

4 Charge the tablet without pushing power button until it charges fully.(let it overnight)

24) Q:Why I can't enter in fastboot mode?

A: (Thanks to [MENTION=281521]jcespi2005[/MENTION]):

Just power off (press power off for 10 seconds), wait some time, 5 minutes, and press VOL+ VOL- and then power on until fastmode shows on the tablet. When you connect the tablet on fastmode, the Manufacturing tool just boot a droidmode image like this:

01/14/15 00:14:29.870 INFO : Port 0/0/4 #0: Booting droidboot image - SN : Baytrail00005B06

01/14/15 00:14:32.914 INFO : Port 0/0/4 #0: Booting to droidboot.img success - SN : Baytrail00005B06

25) Q: The brightness auto dimming up and down by itself. But This tablet no light sensor and cannot enable/disabled auto brightness.

A: (Thanks to [MENTION=231493]melvincz[/MENTION]):

Go to the Intel Graphics settings utility (find it in the tray), choose Power section and disable all energy savings functionality. That will fix the auto-dimming issue.

That's all! ENJOY! If there are any questions feel free to post in the forum. ;) Thanks!

HARDWARE AND LOW LEVEL FIXING

FLASH BIOS WITH THE USB PROGRAMMER AND CLIP (thanks to Hendrickson)

You can follow the tutorial here:

Russian Tutorial

The clip took a few goes to connect and it finally do when you hear the windows beep beep that new hardware is detected. Flashed and verified and boots fine. Windows 8.1 installed the drivers itself. You don't need to install them.

Some tips, I did it with the battery connected and fully charged. I used the 25xx slot on the usb programmer and the clip #1 is the colored cable of the 8. #1 on the clip to the . connector on the winbond chip itself.

Flashing took around a minute its quick.

DISPLAY BRIGHTNESS THROTTLING (thanks to Petepe10)

I think I found a way to prevent that the display is heavily dimmed due to a thermal event. It is in thermal_throttle_config.xml in system/etc. My interpretation is that by the mod below the brightness reduction is not immediately to 40 percent but goes down in steps to 80 60 40. Wouldn't you agree? I have not found the trigger settings yet though. The xml is editable (I use total commander), reboot afterwards. I will test some more. Of course such thermal mods are not without risk, so be warned..

<!--Cooling Devices-->
<ContributingDeviceInfo>
<CDeviceName>Display</CDeviceName>
<CDeviceID>1</CDeviceID>
<CDeviceClassPath>com.android.server.thermal.Brigh tnessControl</CDeviceClassPath>
<CDeviceThrottlePath>none</CDeviceThrottlePath>
<ThrottleValues>
<!--ThrottleNormal>100</ThrottleNormal-->
<!--ThrottleWarning>40</ThrottleWarning-->
<!--ThrottleAlert>40</ThrottleAlert-->
<!--ThrottleCritical>40</ThrottleCritical-->
<ThrottleNormal>100</ThrottleNormal>
<ThrottleWarning>80</ThrottleWarning>
<ThrottleAlert>60</ThrottleAlert>
<ThrottleCritical>40</ThrottleCritical>
</ThrottleValues>
</ContributingDeviceInfo>

FIX EMMC (thanks to stachoo777)

You can follow the tutorial here:

stachoo777 Tutorial

Be aware of broken droidboot mode when updating to newest ifwi bios for c6j6. One hint for this is that efi shell is like dos so if you want to go to USB just type "fs1:"

FIX PROBLEMS OF HEAT DISSIPATION (thanks to acc007)

acc007 Tutorial

FIX HEADSET PROBLEM(thanks to Hendrickson )

If with music, it sounds like it's being played through a tunnel, or been compressed down to something like 8kbps. The main instrument tracks usually sound fine, but the vocal track is heavily muted and in some tracks practically inaudible; it's also tinny and a bit distorted.

It's not defective, it's a Iphone style jack, if you don't fully insert your 3.5 plug it will sound normal. Or use a headphone without a mic or a converter like this one: http://www.ebay.com/itm/301385140519?_trksid=p2060778.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT