yashsingh1/xdaforums huggingface dataset:
[Windows 8 General] NexusRunner:
1 extract windows key from BIOS, save it to a file and back it up outside the tablet; a tool is attached in the original post, which I uploaded here

2 flash dual BIOS which again is (re)attached

3 download&install Android first, then Windows. The whole procedure is almost identical to many translated guides, including X98's. A through Chinese Guide is also attached in the original post, which I don't bother to upload

4 import windows key back into BIOS

To undo, repeat tapping one single vol button during bootloop. This undo sets Xposed disabled, for more information about how to undo this "undo" please search for Xposed safe mode.

Xposed is working with 0x98 hack described in X98 thread: (thanks to [MENTION=5007424]majkel_94[/MENTION] and [MENTION=281521]jcespi2005[/MENTION])

(su and mount /system rw first)

echo 0x98 > /data/data/de.robv.android.xposed.installer/conf/jit_reset_offset

chmod 644 /data/data/de.robv.android.xposed.installer/conf/jit_reset_offset
[Windows 8 General] ozzybeefeater:
code doesn't work

Just tired the code and it doesn't work.

---------- Post added at 05:12 PM ---------- Previous post was at 05:03 PM ----------

Guys I followed Piotreq62's upgrade instructions on the banggood review. The only thing he forgot to do was to clear the play store cache. Settings, apps, all apps, google play store, force stop, clear cache. Play store should work now.

They won't let me insert the banggood link here but I'm sure you know how to get there.

Hope this helps guys.
[Windows 8 General] daniel1112333:
How much storage extend can I get for it?

Is it supports 128GB memory card?
[Windows 8 General] johhnyhotrocks:
Hi,

Can one of you kind people help me with changing the build prop. I am rooted via Iroot and have tried this tutorial http://xdaforums.com/showthread.php?t=1948558 but I cannot find "root settings" In es explorer.

I have never changed build prop on any of my previous devices so am a Noob about doing this.

Thanks
[Windows 8 General] Braccoz:
swipe from left edge of the screen, under tools you will find root explorer option
[Windows 8 General] chat1978:
It worked as you described. I was tapping (not holding) the vol down and I got into safe mode. There everything was not working because all apps were crashing including the default launcher.

I did a shutdown and restart and I logged in without a problem.

With regards to you instructions and to verify. Before xposed I need first to do execute the following commands from a terminal.

With regards to the attachments, can you please elaborate more what are they about?

Thank you very much.
[Windows 8 General] johhnyhotrocks:
Oh well got there in the end (thanks Braccoz) and tried Nexusrunners suggestion in post #198, but still no play store!!!

HHHEEELLLPPPP!!!
[Windows 8 General] johhnyhotrocks:
Have now tried Mourattis idea in post #205...................this tablet is getting close to the bin lol because that doesnt work either. He says clear the data off google play services, but that isnt possible only cache can be cleared.

---------- Post added at 04:30 PM ---------- Previous post was at 04:00 PM ----------

Have just tried deleting Play store and services and still no luck!
[Windows 8 General] etso12:
How did you this? anyone please post instructions
[Windows 8 General] NexusRunner:
No mount /system rw is not a command line that will execute, it's just a description, I mean "make sure your system partition is writable"

For more information please see the original post at:

xdaforums.com/android/general/teclast-x98-air-3g-tablet-9-7-2048x1536-t2913035

Those 2 attached files are from the official single boot to dual boot convert guide. One is for backup and restore the windows key in BIOS, the other is for flash the official dual boot BIOS. There's a third file in that official guide, which is dual OS install manual in Chinese, since we have much more detailed guide in English I don't bother about that.

There's also an unofficial modified Xposed Installer on Teclast forum that will simply work without any hack. It's working, it's just not from original Xposed developers. If you are interested and willing to take the risk, please visit:

http://bbs.teclast.com/thread-248709-1-1.html
[Windows 8 General] dani7710:
no one is interested in charging and OTG functionality ? I'm waiting for that I get this hub

http://it.aliexpress.com/item/Universal-usb-OTG-Charger-HUB-cable-for-Tablet-PC-thinkpad-8-X98-M80ta-WT-8-Miix2/2038609573.html?recommendVersion=1

someone has taken it? works with the tablet started?
[Windows 8 General] Braccoz:
charging while using otg can only be @ 500 ma because the d+ and d- cannot be shorted. there are many cheap hubs on the market that have (wrongly) the +5v and gnd connected directly to the external psu port, and that will make the current from the psu run into the host (otg) port, charging the device.

so i don't think it requires any particular equipment, rather, cheapo, not well made hubs should work
[Windows 8 General] dani7710:
thanks for the answers I hope you be much help. honestly I do not understand if with that hub I can truly transform the tablet into a PC workstation powered. I would like to do with the tablet voyo a1 . that has the dedicated power supply. many say that with that special hub is really possible to use it as a PC workstation powered. is true for our tablet x80h? or you are sure that with this hub "in mode 2" will pass 500mAh only and will not be sufficient? via hdmi screen tablet I keep it off.

is urgent because I have little time left for the return free with amazon and possibly take voyo a1 mini
[Windows 8 General] Braccoz:
i can't be sure the tablet will go into charge mode while using OTG because i have yet to receive mine, sorry
[Windows 8 General] dani7710:
watch these videos . I would like the same thing. famous hub aliexpress.

https://www.youtube.com/watch?v=BzzVuORAqQc

https://www.youtube.com/watch?v=dCsBK14wH6U

very important

https://www.youtube.com/watch?v=ENFaHWl8p_c&index=1&list=FLDlus0nYfe0iiYfUAqB4erg

im tested the memory. my is toshiba.
[Windows 8 General] Mouratti:
Hello

For me works.

Clear the cache only, but you need to change google play store, to a system app, with link2sd.

Then reboot and works
[Windows 8 General] johhnyhotrocks:
Hi and thanks......I had done that and still nothing. But today I got a Google Play services update via Mobo Market and it worked after that!
[Windows 8 General] B^4g:
I was thinking before, there is no recover for my tablet, but good news - tablet works again.

Using this programmer: http://rayer.g6.cz/elektro/spipgm.htm#1V8_ADAPTER My pc have LPT port, but in Ebay you can buy USB to DB25 Parallel port cable.

EDIT: Tried USB to Parallel, but not working. My USB-DB25 cable is recognized (in Device Manager) like USB-Serial CH340 (COM port). Not working with SPIPGMW.

Using tablet power supply for bios chip (pin 4-ground and pin8- 1.8V) and pc usb port 5V for supply BC547, because only with 1k8 ohm resistor chip was not recognized (SPIPGMW.EXE /i).

Link software: http://rayer.g6.cz/programm/programm.htm#SPIPGM

With SPIPGMW.EXE /d backup.bin i discovered that the chip was not flashed correct (? or i send wrong/edited file).

After erasing SPIPGMW.EXE /e and reflashing SPIPGMW.EXE /p tpad.bin, tablet light up with red logo in middle and starting Windows. Hurray!
[Windows 8 General] xxLeoxx93:
Didi you open up the tablet? If yes, can you tell me how to do it?

Thanks!
[Windows 8 General] B^4g:
Use plastic tool to open. Watch this video: https://www.youtube.com/watch?v=841pMJC_QOk
[Windows 8 General] Mouratti:
Well i update only the google play to 5.11 i guess.

But its great to hear that you solve :D
[Windows 8 General] ndouchin:
Hello,

I have also bricked my tablet and finally my tablet works again after buying these:

http://www.aliexpress.com/snapshot/6466496821.html?orderId=65551905818711

http://www.aliexpress.com/item/Free...lips-Socket-Adpter-BIOS-24-25/1844254916.html

Not so cheap, but it works (with windows 7 64 bits)and no soldering.

To open it I used a cutter and plastic used for guitar. It is a bit tough to open the tablet.
[Windows 8 General] dani7710:
Share photo x80h opened
[Windows 8 General] Soul7777:
Anyone experience weak wifi? I've updated the driver, but still the wifi is much weaker compared to my other devices..
[Windows 8 General] righteous@:
hi

Hi, I bought me teclast x80h.

whether due to use both USB and charger

l received the following products from buyincoins.

http://www.buyincoins.com/item/39626.html#.VNlOK-asXfI

http://www.buyincoins.com/item/25686.html#.VNlOJuasXfI

and adding them to two micro USB cable, I connected as follows

http://img499.yukle.tc/image.php?id=3814IMG_20150209_170537.jpg

in this way, but at the same time charging the screen looks, but it does not charge, only more slowly discharged battery.:crying::(

He irritates me, this tablet at the same time and whether there that can use both USB charger function?:confused:
[Windows 8 General] B^4g:
Before i brick my bios, there was option for OTG function. I think maybe with this enabled can use charge and discharge. But with dual boot bios this option is missing (as many others).

I find here backup with single boot, but not working for me: http://pan.baidu.com/s/1jGvcd2A#path=%2FX80H

Bios is same size like update 05.11, Descriptor is little different, ME partition is older version (TXE FW version in bios). After flashing it, screen stays black, nothing happend (there is 1.8V to chip).

So dont flash single bios over dual bios! I use programmer again to return dual boot bios. Tried to replace ME partition with newer version from dual boot, but it`s not working again.

Only dual boot works!
[Windows 8 General] righteous@:
hi

Entering into the bios menu how this x80h

I ask on the windows version?
[Windows 8 General] dani7710:
Ok, charge slow... Otg usb works? Whit slow charge
[Windows 8 General] ndouchin:
You will find picture about opened x80h. I manage to reactivate my windows with the key of another teckast x80h, the teclast key BIOS app(on chinese) and by using the Microsoft phone activation number.

I guess you can create a new bios key file by copying a bing key number from another pc or tablet, thanks to a bin file, which must begin like this,

01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 1D 00 00 00

After that, it is the key number in hex you can find thanks to rweverything or windows 8 key viewer.

I use this russian tutorial, translated in english to manage to use the teclast key bios app:

http://4pda.ru/forum/index.php?showtopic=629082&st=980#entry37669866
[Windows 8 General] LukyCami:
hdmi resolution problem

Hi,

I have x80h with Windows 10 9926 and when i connect tablet to tv with minihdmi/hdmi resolution has changed on 640p (i guess) and display doesn't work correctly to touch, after few random touch i can switch to 1280x800, but when i connect next time resolution isn't 1280x800 and round and round. I tried two type of tv.

Have you this problem too or just me?

Thanks
[Windows 8 General] xxLeoxx93:
How do I know, that my bios is broken?

I never changed anything there, but the tablet went off. Now there is absolutly no reaction when pressing any button (display does not turn on, and the device remains cold).

Can a bios reflash repair the device?
[Windows 8 General] ndouchin:
When i brick my x80h, the bevahior was as you said no reaction , no charging, device cold. Maybe try to open and check the bios if you have the equipment ( test clip soic8, and something can read 1.8v eeprom, as i bought or custom made with a raspberry, or other device like BeagleBone Black)

Once you have the equipment it is not so difficult to read write eeprom.

Without that it will be difficult to detect what is happening...

Do you try another charger?
[Windows 8 General] mauveron:
Hi, could someone install BatteryBar on Windows and see what's the capacity of the battery in Wh?

In a previous post a capacity of about 14 Wh was reported (read from HWMonitor), but it seems small to me, I expected about 17-18 Wh.

Thanks!
[Windows 8 General] righteous@:
yes

yes,otg usb works,and slowly charge of handling
[Windows 8 General] Vefy:
how can i restore activation on windows?

Hi,

i bought this tablet a month ago, and i didnt do activation key save before i made a windows reinstall and a bios change (fb4m--> fb5m). My windows isnt in activate state. How can i activate? need i write to teclast support ?

thanks. sorry for my english.
[Windows 8 General] AfXv237:
Hello again,

I got my hands on this amazing little tablet, at last. I bought it from Geekbuying, 124$ with DHL shipping (3-5days).

I am so damn excited that I've got a good one. It has the Toshiba eMMC which is damn fast! (Thank God I didn't get that BIWIN crap) However, the microSD speeds are around 20-23mb/s despite having Kingston 32GB 90mb/s read 35mb/s write SDCA10/GB microSDHC UHS-1 card. I tested the same card through a 3.0 4-port hub through a microSD USB3.0 adapter and scored speeds up to 35-40mb/s which is nice. I could plug 4 USB memory sticks simultaneously so space isn't really a problem anymore.

I did all the Windows updates without any problem. On Android I have rooted and fixed Play store quite easily and removed all the chinese crap. I followed this guy's guide: http://xdaforums.com/showpost.php?p=58729069&postcount=5 + searched on youtube "how to root teclast" (note: you have to activate USB debugging mode in Developer mode and have to click about 7 times on Build number on Device information or w/e it is called)

Battery lasts 3-4 hours while browsing, tweaking, listening to music, facebook, youtube. I am really satisfied. It charges really fast as well. (note: buy additional 2.1A chargers via Aliexpress. They are cheap). It does not work charging through this USB3.0 port hub.

Touchscreen is good. It is a bit tricky on Windows, but not impossible, you get used to it. Best option is to get a port hub with a wireless mouse and keyboard, some USB memory sticks and you're set.

1280x800 resolution is right the suitable one. You do not see the pixels, but it isn't something astonishing either. It is fine, it won't disturb you in any way.

It is quite fast, really fast actually for this price. No problems when browsing, didn't test games yet. Sound quality is really good. WiFi seems to do its job. I get sames speeds like my Samsung Galaxy S4 i9295.

After removing the chinese bloatware I benchmarked with AnTuTu and compared with my blazing-fast CM12 5.0.2 ROM i9295 S4 Active and these are the scores: Teclast X80h: 35696 and S4 Active: 33063. I don't know how true are these values because apart from browsing I did not compare them in any way. They are both fluid, didn't encounter any problem. I enjoy both of them equally.

Going to order another one for my brother tomorrow.

I have a question regarding Windows: Should I update manually any drivers?
[Windows 8 General] spikexp:
I got mine back in November (FM4M) and it stopped charging when powered up after a couple of day. It will only charge when it is fully powered down. I was able to check it with my wattmeter and I can clearly see that it stop pulling current as soon as it start booting. It also doesn't charge to 100%, 91% at most.

Any idea how I could correct the charging issues?
[Windows 8 General] AfXv237:
Wow.. I really hope I won't have such problems with my x80h.. I have already charged mine 4 times from around 15% to full in both Android and Windows without problems..
[Windows 8 General] etrade:
You need to have at least 2000mA charger... 1000mA charger works like you write of your problem...
[Windows 8 General] ndouchin:
I have two x80h : one fb4m , which have a 16000 mw , and an fb5m dual boot which have a 14000 mw . (Twice have BIWIN ssd....)

However the first one stop charging @ 85 % sometimes (i have different 2A charger, a samsung, a amazon) , , the other haver no problem of charging.

The Fb4m now have the dual boot bios... and sometimes when i unplug , plug usb, the process of charging restart from 85% to 90% even to 100%...

Maybe there is an issue in windows..
[Windows 8 General] Braccoz:
dang, i just found out that my unit is defective... the hdmi port doesn't work at all. im gonna have to return it :(

anybody tried the hdmi port to confirm that it is working on other units?
[Windows 8 General] righteous@:
bios menu

Please someone can answer?

At the same time, charging both the otg usb keyboard mouse is capable of running?

I've tried so hard for this, but it doesn't.

This device also how to enter the bios menu?
[Windows 8 General] AfXv237:
Isn't it risky to charge it through OTG Port hub? I really wouldn't risk my tablet by charging it at 500/1000mAh instead of 2/2.1 A. I know it might sound crazy, but it is a chinese brand after all, so you never know. I don't see the point anyway. Who stays continuously for 4 hours on a tablet with keyboard and mouse connected. Not me. I have a 15000mAh Anker external battery and I can charge it anytime, anywhere. Anyway, I believe I received the latest batch since on GeekBuying they say the they've got their latest batch on 27th January 2015. This is why I bought another one for my brother. All I can say is that I have no problems yet, everything works perfect and smooth and got the Toshiba eMMC, not that BIWIN crap. :laugh: Here's my mini review - http://xdaforums.com/showpost.php?p=58785564&postcount=256 .

Why I recommend GeekBuying? 3-5days DHL shipping for 5$. Isn't that insane? Furthermore, you have more buyer protection days from PayPal instead of waiting up to 30days for China post. Hence, I can return it in 40days for free if something happens or I don't want it anymore.

Once again, my tablet is fast, everything works, I rooted it and removed the chinese crap, fixed everything, updated the Windows, works flawless. Hope I won't face any issues. In 40days for sure they should appear if something's defective.
[Windows 8 General] righteous@:
I'm using Notebook, so I charged the battery and both connect a usb keyboard I have, still I can't figure out this issue.

Also, this is the tablet version of windows) how to enter the bios menu?
[Windows 8 General] B^4g:
https://www.youtube.com/watch?v=XZcYbxOcPV0
[Windows 8 General] christiancoder:
bootia32.efi

I am trying to do a fresh install of windows 8.1 pro 32bit but the uefi will not boot EFI/boot/bootia32.efi, it will boot EFI/boot/bootx64.efi but you can't install 64bit windows on the z3735f. Originally I followed these teclast instructions: bbs.teclast.com/forum.php?mod=viewthread&tid=263550 to do a clean windows install of windows 8.1 with bing, it only has EFI/boot/bootia32.efi and it worked fine, but after deleting a few partitions I can no longer boot a 32bit efi. Is there anyway to tell the uefi to boot a 32bit efi, how did it work before and why would deleting a couple partitions change the boot behaviour?
[Windows 8 General] SUMMERBREEZE:
Its a great tablet for the price, i bought it for my wife. :)
[Windows 8 General] B^4g:
I think you delete 100MB partition containing bootia32.efi and this cause not booting.

CPU is 64bit, but UEFI is 32bit and Legacy Bios cannot be activated ( i wish install Win7x64 on MBR, not GPT, because GPT is not supported in BIOS, only UEFI). If UEFI is 64bit it will support only 64bit (i think) and then Windows 7 64 bit can be installed (on GPT). EDIT: Maybe i wrong: http://wiki.gentoo.org/wiki/GRUB2#Installing_the_boot_loader

If you wish install only Windows 8.1 without Android use Wimpart.txt instead Wimpart_dual.txt.

I waste time searching method to install Windows 7, because of driver issues with Windows 8.1, but i found another solution. Just run driver setup.exe in compatible mode Windows 7 and now is working with Windows 8.1 too. Device is USB DVB-T tuner.
[Windows 8 General] johhnyhotrocks:
Mine works OK
[Windows 8 General] chat1978:
Does anybody have a problem with WIFI over android?

My Android loses the WIFI connection when going into sleep although I have enabled the option for it to stay connected.

Is there something special?
[Windows 8 General] AfXv237:
Haven't noticed to be honest. Try Internet booster donate (root) and check if that happens anymore
[Windows 8 General] christiancoder:
Where can I download Winpart.txt? How do I execute it? Why can I only boot 64bit efi on a usb stick (32bit efi bootia32.efi will not boot)? Did you get 64bit windows 7 installed?
[Windows 8 General] spikexp:
Tried with many charger, Kobo arc 2amp, nexus 4, xiaomi 10040 battery. Nothing to do.
[Windows 8 General] B^4g:
First link is ready to install, but need to extract to GPT FAT32 formated with Rufus usb drive and contain all needed files to install windows, but warn you this wipe complete tablet memory and install unactivated windows.

My tablet (FB4M with bios 19/12/2014) boots only 32bit uefi windows. Tried iso with X86/x64 and install x64 but not boot, only x86 boot. Windows 7 x64, because is EFI compatible compared to 32 bit Windows 7.
[Windows 8 General] righteous@:
is there anyone that uses these product areas by connecting a usb keyboard and mouse?
[Windows 8 General] xxLeoxx93:
I Tried all chargers I have - still no reaction at all.

Can you tell me how to open the device? I tried for about 30min, but I'm still not able to open it...
[Windows 8 General] ndouchin:
It is a bit tough to open.

I use a retractable blade knife to begin the opening. And after i use a plastic to play guitare to open completely. Made a bit scratch due to the knife, not very important.
[Windows 8 General] Mouratti:
Hello Guys

After install Xposed framework on my teclast x80h, the enter in a cicle boot.

Anyone get this work?

Do not install this app, for people who install, to enter in "safe mode" need to start and press volm + and vol -
[Windows 8 General] righteous@:
Hi guys,

After recovery, the camera is not working, camera driver is not installed shows in the properties.

does information have?
[Windows 8 General] bushako:
I followed your instructions and managed to re-partition the android user data down to 4GB. However, after going through so much frustration to make it boot the Windows USB flash, In the BIOS i had set the usb as the 1st priority in the booting sequence with no success... until i managed to find the option in the BIOS that basically forces it to boot from the USB, its in the 3rd Tab of the BIOS. Just incase anyone else is going through the same issue I figure this piece of info might be useful. Also thanks alot for these intructions, I was having hard time searching for a clear instruction until i found yours. Hope to hear from you soon.