yashsingh1/xdaforums huggingface dataset:
[Windows 8 General] sence:
Hi, I dont know the exact problem you are facing...But if you are facing the similar problem that I faced while trying to root this tablet, then follow the below steps...This was I followed for rooting with the X98 toolbox..

Install the latest Samsung usb driver (this is what I used,dont know if any other adb drivers work)

Restart the computer (very important)

Go to Device Manager, find the Android device, and select Update Driver Software.

Select Browse my computer for driver software

Select Let me pick from a list of device drivers on my computer

Select ADB Interface from the list

Select SAMSUNG Android ADB Interface (this is a signed driver). If you get a warning, select Yes to continue.

Done!

After this , the windows will properly recognise the tablet as mtp device

---------- Post added at 02:51 PM ---------- Previous post was at 02:35 PM ----------

Hi mate,thanks for reading and replying to my comment....Anyway, I just used the X98 toolbox to root the tablet....But had to manually select the mtp drivers,like the way I explained in my above post....And I used the updater app to updating the android before rooting...

Now there are couple of issues

1. battery calibration issue - It drains to 7% really fast, and then stuck in there for hours...I did make the tablet to go fully off in android and then charged it for 8hrs while its completely off...Still its showing the problem again.....Does any calibration app fix the problem?

2. Time changes when switching between windows and android....Difference is like 5-6 hours.,even though the time zones are the same on both OS..

3. Fogy videos with Hardware acceleration - When I play videos in android,videos are looking fogy....It only happens with hardware acceleration...When videos are played using the software acceleration,it looks perfect...I did try to switch ON and OFF that intel video thingy in the android settings,but its not making any difference...

---------- Post added at 03:01 PM ---------- Previous post was at 02:51 PM ----------

Hi mate, did you solve this battery calibration issue?...I am also facing the same.
[Windows 8 General] B^4g:
Here Windows 8.1 Pro Lite with x80h drivers: https://1fichier.com/?tqz2d9r7je

ISO source: http://www.dlall4.net/software/199958-windows-81-pro-lite-update-1-x86.html

Login is Administrator. WindowsApps to work need to create local user. Tried syspep, but login is different and need account to use windows. Missing option is to boot to uefi settings. Free space after install is 24.5GB. Windows is not activated. No tools or other programs are included, only drivers.

I mentioned before touch keyboard to enter settings. Turning on tablet and fast tap in down side to show up keyboard. See attachment.
[Windows 8 General] xxLeoxx93:
1. Have a look here: http://xdaforums.com/showpost.php?p=57587321&postcount=3339

Worked perfectly for me!

2. Try this: Go to "Run", type in "regedit", then navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\TimeZoneInformation

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

---------- Post added at 12:10 PM ---------- Previous post was at 12:08 PM ----------

I'll ad your file to the OneDrive folder as soon as possible :)
[Windows 8 General] B^4g:
Forget in archive name: this is single os install and will wipe complete memory- windows and android.

Attachment file here is for dual boot install after Android.

btw very useful sometimes is TouchMousePointer (i use it in fullscreen)
[Windows 8 General] sbasil:
Read the second post in this forum ( xxLeoxx93 has collected all informative links there). Here's the link for the instructions http://xdaforums.com/showpost.php?p=57587321&postcount=3339

I had to do it twice (charge the battery to 100%, then discharge it, then charge it full again while the tablet is turned off). Just

READ

the instructions. Worked for me. :)

edit: An easy way to check if your battery calibration is OK, is to install HWMonitor and check battery's "Designed capacity." When it's somewhere around 16000-17000(?) mWh, your battery should be OK (~5000mAh) and the 7% problem should be gone.
[Windows 8 General] oile:
Anybody else with 23000 mwh? I suppose it was 14 or 16-17mwh
[Windows 8 General] B^4g:
Hm, is your battery 6000mAh?

23000mWh : 3,8V = 6053 mAh

My tablet battery is named only 3,8V and in HWMonitor is around 16000mWh. Size is ~ 100mm x 100mm x 3mm.

5000mAh x 3,8V = 19000 mWh

5000mAh x 3.7V = 18500 mWh for this one: Battery For Colorfly E708 Q1

If tablet can fit 4.5mm battery maybe is 6000mAh:

3.7V 6000MAH 4594105 Original LG Lithium tablet Battery with protection board For Onda V971VI30 Teclast P88 Vido N88 CUBE U35GT (4.5mm*94mm*105mm)

6000mAh x 3,7V = 22200 mWh
[Windows 8 General] oile:
Can you guys do this simple battery test? Start hwmonitor sensors, then start a demanding game or app, then back to hwmonitor. How much did the battery voltage decrease during the stressing time? Just let me know if it's more or less than 0.100 V

Would you mind? Thanks
[Windows 8 General] sbasil:
Lol, no it isn't. I read the voltage from hwmonitor and it showed 22796mWh / 4,1V when I checked it ((~5500mAh...close enough to the designed capacity). But it doesn't seem to be that accurate at all. Now it shows 4,241V & 16336mWh (~3800mAh). I guess you can't have it all for 100 euros.
[Windows 8 General] ea_:
I was trying to install a linux chroot or similar in the android filesystem with apps like Debian Kit or Linux Deploy but both of them fail with something related to the inability to get root privileges, my tablet is rooted and super su works as far as I know.

Did anybody else have similar issues? Maybe is there some lack of feature in the provided kernel like some SE extensions that prevents to mount / perform those chroot? .

EDIT: SOLVED :) You need to install the app: SELinux Mode Changer

OR perform in a shell: setenforce 0

and then you can go on with Debian Kit or a chroot like Linux Deploy.
[Windows 8 General] B^4g:
Disabled critical battery level actions and tested battery with Battery Eater ( wi-fi on, maximum display brightness and sleep display never), but battery after is recognized like 14432mWh. How to fix? Before was 16363mWh.

btw hibernate off free up 1.6GB: powercfg /hibernate off
[Windows 8 General] sbasil:
Try the "calibration trick." Discharge your battery --> charge it back to 100% while the tablet is off (repeat it if it doesn't get fixed right away). That's how mine got "fixed", but for how long, remains to be seen. The tablet might need some sort of a firmware update in order to fix the problem permanently (just a guess and since the problem happened once, it will probably happen again). :)
[Windows 8 General] B^4g:
Tablet was off while charging after test, but not complete charged - only around 40%. I used provided charger 5v 2a, but i am wondering if charging from pc usb (with tablet usb cable) will be better. So complete discharge and complete charge, but tablet off.

OK. I will try.

EDIT: OMG. Playing with power button while charging - sleep on and off, but screen stayed black and need holding down to restart. After this battery is 16336mWh. LOL
[Windows 8 General] sbasil:
Nice. :) If you have time, could you pull an energy-report and find out if you have any errors there (open cmd as an admin --> cd\ --> powercfg -energy --> check C:\energy-report.html)?

I have the following error that annoys me (it doesn't happen if the volume is muted (0), so it sounds some sort of a driver issue):

System Availability Requests:System Required Request

The device or driver has made a request to prevent the system from automatically entering sleep.

Requesting Driver Instance	ACPI\80860F28\1

Requesting Driver Device	Intel SST Audio Device (WDM)

edit: I also had the following error:

System Availability Requests:System Required Request

The device or driver has made a request to prevent the system from automatically entering sleep.

Driver Name	\FileSystem\srvnet

Running "powercfg -requestsoverride DRIVER \FileSystem\srvnet system" seems to fix it.
[Windows 8 General] xxLeoxx93:
I've added a new folder called "Connected Standb & Hibernate after 30min" to the onedrive mirror.

if you install/run those files you tablet will go into hibernation after 30min of connected Standby! Make sure that hibernation is "activated" or just type this into cmd:

powercfg /hibernate /size 50

If the windows update fails to install, just ignore it ;)

Regards Leo
[Windows 8 General] xxLeoxx93:
Did you try this: http://xdaforums.com/showpost.php?p=57587321&postcount=3339 ?
[Windows 8 General] sence:
Yes mate, thats what I meant by changing the "critical battery action" to "do nothing"....I dont think its a permanent fix..May be it will fork for a single os device.....I dont know if its effective for dual OS devices....
[Windows 8 General] ndouchin:
I have the same issue 14432/16600 mwh, i guess it is dual boot that "corrupts" the battery calibration.
[Windows 8 General] oile:
Definitely no. I had this crazy calibration on my fb4m version.

However mine doesn't even turn on correctly, I have to press the power button 30-40 times (3 sec, 10 sec, 30 sec it doesn't change) to have it booted.

Could anyone please do a fast stress test and measure how the voltage changes with hwmonitor? Thanks
[Windows 8 General] xxLeoxx93:
I had the same issue with my fist one until it died completly...
[Windows 8 General] emilio3k:
hi guys, i'm totally new here. I've ordered a teclast x80h dualboot from tinydeal last week. its not arrived yet and i can't wait until it's mine . Anyway, I wanna make this tablet working with windows only and i prefer to spare some memory instead of having another android device. since this is not a traditional computer, what should i do to remove android and make the emmc 1 partition only with windows only? Normally in a pc ill modify the partitions with gparted booted from a usb drive and simply reinstall windows, should i change the bios?
[Windows 8 General] xxLeoxx93:
Just do it like this: https://www.youtube.com/watch?v=sNLPm0EQqA0

Or learn to read the second post in this thread... ;)
[Windows 8 General] emilio3k:
thank you very much for the quick answer
[Windows 8 General] oile:
Please, anyone?
[Windows 8 General] B^4g:
Tested with Prime95 (Blend test) fully charged battery. Start voltage: 4,206V. Drops first seconds to 4,188V - 4,136 V. Then 4,118V for a while. Then 4,100V. Stop Prime95 3 min later and battery voltage restore to 4,171V-4,188V.

Try Battery Eater. My tablet holds near 3 hours.

btw. I see this battery: LG brand batteries Tablet PC battery 6000mah in 4pda x80h thread.

Looks nice, but can`t believe true capacity to be 6000mAh.
[Windows 8 General] sence:
Well sometime when I power ON my tablet, it will be like 3.819V....Sometimes its 4.3V....Is that normal?....And during heavy use, 3.819V becomes 3.731V....And 4.3 will be 4.21..
[Windows 8 General] oile:
I thought that mine is having powering on problems because of a defective battery, but your measured voltage fluctuations are the same as mine. I don't know what to think
[Windows 8 General] etrade:
Yes, I have same problem. When I plug any kind of charger, progress bar rise 5 times in the battery icon and charging ends.

When tablet is shut down battery charges 100%. Is there something wrong in windows settings or broken battery ?
[Windows 8 General] sence:
Have you used any usb hub to charge and to use usb peripherals at the same time?....'cause I have seen a lot of people complaining about these kinda problems after they used the usb hub....Even have seen a lot of dell venue 8 pro users complaining the same......For those who want to use charger and the usb port, CUBE iwork8 is a good option
[Windows 8 General] emilio3k:
What i am goin to do when my tablet arrives is to format the partitions and install a brand new version of win8.1 (italian) ... Will the product key of the chinese version work with the italian only installation? I tried to search a little on google but i didn t found anything clear.

And about testing the battery what do i need to see if my battery is healthy?
[Windows 8 General] etrade:
Thanks, but I have used and testing only normal and car chargers.

I am not Android user but I tested charging in Android and it works. Have I deleted something important in Windows what have been written in Chinese :confused:

Battery should be ok when it charges 100%...
[Windows 8 General] bushako:
Anyone know how I can switch to ART runtime on this tablet? The option isn't available in the developer settings. Could it be something to do with being unsupported on the atom processor?
[Windows 8 General] sbasil:
If it doesn't work , you can always install the English version and download Italian language packs. Just keep in mind that the regular Windows 8.1 won't work with "Windows 8.1 with

Bing

" product key. In other words, you will need the original Windows 8.1 with Bing disc image.
[Windows 8 General] Antipriest:
Stuck having softbricked android part

I edited build.prop according to a guide i can't find anymore - after restarting and selecting android in the boot menu, android gets stuck at the teclast logo.

Since this, i've found what i did wrong, so as i see it, i simply need a way to access the build.prop to restore my android part. But HOW?
[Windows 8 General] Hendrickson:
Biwin eMMC's are bad, they are just so slow, I found my Chuwi feels much faster due to the hynix part in general Windows 8.1 loading and use. Teclast seems to have gone for the cheapest eMMC's part now as they are using the biwin's on the X98 Air 3G and the X80H. The first X98's were shipping with Toshiba and Hynix drives, but to increase profits they have ditched them i think.

How is the screen compared to the Voyo A1? I found the A1 screen was horrible, I had to press harder on the screen to get it to register touches around the edges. The Chuwi Vi8 touch is very good.

Is it a goodix touch digitizer?
[Windows 8 General] xxLeoxx93:
I wouldn't judge a tablet by the emmc.

The Schenker Element uses Biwin eMMC too, but its really snappy - so I don't think that only the emmc that makes a device slower. The performace is affectet by so many things -mainboard&bios, Cpu etc...

I had a Chuwi v88 which uses Hynix emmc and the emmc died just after a year. Moreover Chuwi doesn't do **** about updates for there devices.

Yes, the digitizer in the voyo a1 mini isn't that great at all - and even with the same specs as the teclast x80h it performs slower in games and benchmarks.

The digitizer in the Teclast x80h seems much better (mine is on it's way, I heard that from a friend).

What i like about the x80h is, that you can charge the device with the USB Port and that it has a metal case.
[Windows 8 General] agunghost:
Hi, all

I own Teclast X98 air 3G, and it's using slower eMMC part (BIWIN not Toshiba) . In my opinion, faster eMMC does better than slower ones. I can feel the different because I also own Surface pro (eventhough it's not fair to compare). Still, the different is noticeable.

But I also add one of the most critical point, which is the quality of tablet itself. in X98 Forum, there are several faulty ones, I don't know if it also happens with this tablet (X80).
[Windows 8 General] xxLeoxx93:
I bet that I'll spot a diffrence between the x80h and my Tower-PC with Xeon Cpu...:p

The only thing we can do right now is wait, until the fist devices arrive. Teclast did better with the Air 2, so let's wait and see. :fingers-crossed:

Btw: People with faulty ones are allways more active in forums like xda than people with good ones.
[Windows 8 General] ksaander:
Is x80h plagued with 3d gaming problems (freezing) like x98 air ii/3g?
[Windows 8 General] ekseu:
I'm thinking of ordering the dual boot version of the x80h. I'm wondering whether or not 32GB will be sufficient for both Android/Windows and if there will be a way to assign internal disk space to a certain OS. If anyone else bought the dual boot version, anyone willing to follow up when the tablet arrives would be great. :)
[Windows 8 General] Lowkey1:
You'll have rougly 10gb on windows and 7gb on android if it follows like the X98.

I too will also be buying this tablet, is the eMMC issue a concern?
[Windows 8 General] jazk:
I've had this tablet for nearly 2 months now, after ordering it from Amazon with same day delivery. I've used it constantly mainly for web browsing and Microsoft word(1 year free on office) and occasionally use a micro HDMI cable to watch movies on my TV which is great :D. The only downsides to the tablet are that it has some little glitches at time which I think is a fault on Microsoft's part and also the display seems to bleed a little on the edges which annoys me a little. Overall a great little tab which lasts me more than 4+ hours of screen time. Now only if I could flash the dual boot software and run android for my games..

---------- Post added at 01:33 AM ---------- Previous post was at 01:31 AM ----------

I do not have the dual boot version but after just downloading a few applications and all the updates I seem to have around 3GB of space left, you could always use the microsd as the main source of storage I think. 4pda has a big community for this tablet, something everyone here should check out.
[Windows 8 General] Lowkey1:
Does the screen look nice? Does it look washed out or anything?
[Windows 8 General] xxLeoxx93:
Thanks for these infomation! Could you extract your bios so that other owner can turn their single-boot into dual-boot devices?

Thanks!
[Windows 8 General] NexusRunner:
wow, I just realized I've jabbered that long a post...

I'm still reading petruccig's great X98 thread... a lot to learn for me. If X80h has devs like X98 it would be awesome!

I'm not familiar with BIOS, and I heard directly flash FB5M BIOS on FB4M will brick the device. However there's already some modded dual boot BIOS for FB4M floating around, I don't know the source of them but they are available at Teclast's supporting BBS:

http://bbs.teclast.com/forum.php?mod=forumdisplay&fid=84

And guess I should also post official ROM link for FB5M?

http://dl.vmall.com/c0far5aih3

This site is buggy, if you can't download, changing browser UA to a mobile one may help.

---------- Post added at 01:22 PM ---------- Previous post was at 01:01 PM ----------

Just found a said working dual boot BIOS for FB4M:

http://pan.baidu.com/s/1mg1JvKW

password: ddb2

The actual tutorial (in Chinese) is here:

http://tieba.baidu.com/p/3522872113

It simply says: unzip and run the .bat with Administrative rights
[Windows 8 General] jazk:
The screen is a very nice IPS, the viewing angles are good and no it doesn't look washed out but nice and saturated :)

---------- Post added at 07:00 PM ---------- Previous post was at 06:32 PM ----------

I'm looking on 4pda and baidu for a way to flash the dual boot system os but Google translate sucks. If anyone could help me it would be great.
[Windows 8 General] Lowkey1:
Thanks for the detailed post, I'm sure it will all of us deciding to purchase it. I have a quick question, does your device have any creaks, screen light bleeding, loose parts or anything? Could you tell us which site you bought it from - this one seems to have the highest orders and feedback on aliexpress http://www.aliexpress.com/item/8-In...735F-Quad-Core-64Bit-1-83GHz/32214733892.html

I'm hoping this device turns out good, will be placing my order real soon.
[Windows 8 General] guyton100:
someone who is member of 4pda please give me attachments from from thread for dual boot. razbivka_disk.rar and x80h Dualbios.rar + to be exact.

http://4pda.ru/forum/index.php?showtopic=609823&st=1580

tried to register many times but only Russian email is supported.
[Windows 8 General] matcho13579:
Hello!

Thanks for the detailed information of the tablet. But, does this tablet ovehates itself in normal use? (web browsing, word, some games, etc.) And what about camera, sound from speakers and battery drain on sleep mode in Windows?

Thank you!
[Windows 8 General] supreme-hu:
I received my x80h dual boot. On android, the play store doesn't work. "No connection" error. (the x98 fix not working .... )

Any idea? :(
[Windows 8 General] jazk:
Mine has little screen bleed on the edges but apart from that it's made of excellent quality.
[Windows 8 General] xxLeoxx93:
Thank you so much for these information. I'll collect them and post them in the second post of this thread asap.

Just to make this extra clear, because it's importet for the bios: There are 2 diffrent versions of this tablet? FB5M and FB4M?

Now we have a dualboot-bios for the FB4M-Version, but the FB5M-Version-Bios is missing, right?

But you have a FB5M version, so maybe we can extract it and make it availbe for everyone :highfive:

Thanks again for your help!

Edit: Updated the second post with direct download and MD5 for dualboot-bios for the FB4M-Version. I'll upload the other files tomorrow.
[Windows 8 General] supreme-hu:
Ok, now works.

- root (use x98 toolbox)

- x98 play store fix

- build.prop:

ro.product.locale.region=US
[Windows 8 General] B^4g:
Try enter DnX mode (turn on holding all three keys). recovery (power + vol-).

Then connect to PC: adb devices

Search for fastboot build.prop flash.

I`m not very familiar with android. Not liked it on x80h, but on my phone is ok.
[Windows 8 General] etrade:
Well, I am not alone with this problem and it is not only Teclast X80h problem. :(

youtube => Teclast X98 Air II Windows 8.1 tablet Intel Bay Trail - Battery not charging when ON, Dissasembly

(new user... no direct link...)
[Windows 8 General] move_over:
I had the same thing happen when I edited build.prop. Ended up having to fastboot flash the system.img to fix it.

sent from hdx+ with tapatalk
[Windows 8 General] Ferum_Konstantin:
through safe mode try! When you push the android Clamp Volume - / + to complete download android
[Windows 8 General] Antipriest:
That sounds great! Not as tedious and punitive as i had imagined, but hey, everything doesn't have to be that way right?

Now, if i can just get that system.img and find the procedure by which to flash it, i'm good to go...

Yes... How did you do it and where did you get the file? =)

---------- Post added at 10:42 PM ---------- Previous post was at 09:59 PM ----------

Sounds great, but either my 20+ tries to get into safe mode, as you described, are an epic fail, or safe mode demands a valid build.prop... Thanks though!

---------- Post added at 11:09 PM ---------- Previous post was at 10:42 PM ----------

Addition: In order to further enhance the frustration, it has stopped letting me inside recovery (Up until recently, i could select android in the boot menu, and with a few tries, i got into their version of a stock recovery).

So, the only perceivable solution lies within the fastboot state that comes before the boot menu if both volume buttons are held...

Either that or divine intervention. Not the religious type though, so my faith is with the holy XDA!