yashsingh1/xdaforums huggingface dataset:
[Teclast X98 Air 3G] siezed:
By data wipe do you mean factory reset?
[Teclast X98 Air 3G] djmvt:
[MENTION=2198172]mirek190[/MENTION]:

Ok done some serious testing last few days while running mirek lollipop v4.

Although I was pretty sure everything was running great it seems there are still issues.

1) wifi is unstable: It looks like it's connected but there is no data throughput, this happens every few minutes. Solution is disconnect and reconnect to the network, then it works again for a little while.

Got 2 of these devices, one running stock kitkat and there is no problem on that one so channel or router settings should not be a problem.

2) system crashes while loading music in an app called deejay2. Only possibility to get things going again is hard resetting the device.

Again no issue on the stock kitkat machine.

3) sometimes android won't boot when soft restarting from windows (2.0.2 bios). Solution is hard reset but this is also an issue since it is needed to reset the device up to 3 times on occasion to get it going again.

Although i think you are doing a great job on the roms I think there are some serious problems with the lollipop release, probably already on the teclast base, haven't tested that yet.

Because of stability I think I will go back to kitkat as a daily driver, 5.0 was a google mess anyway. If the base was 5.1 I guess there would be less problems but hey you are working with what you have ?

Oh the device I tested on is a c5j6 dualboot x98 air 3g with 2.0.2 bios and dualboot android/windows 10, no repartitioning or anything.
[Teclast X98 Air 3G] mirek190:
Yes .
[Teclast X98 Air 3G] siezed:
-deleted my nonsense-

Edit: Oh its just the system file, i just replace the system file in your v4 rom im guessing, gonna go do it now.

PPS: "08/12/15 14:49:57.274 INFO : Port 0/0/4 #0: Flash success" :victory: so testing "a" now, Let you know asap how it goes :)
[Teclast X98 Air 3G] mirek190:
Thank you for feedback .
[Teclast X98 Air 3G] billbmsn:
Cameras with official 5.0

I grabbed Teclast's official Android 5.0 release for the Air II here:

http://bbs.teclast.com/thread-470830-1-1.html

Translate to English if needed with Chrome browser; you must register and login to see details and create a reply to see the download links. Downloading from Baidu can be a *****, but here is a technique that worked well for me: https://www.youtube.com/watch?v=9Ofd-xreKd0 The tutorial is more painful to watch than the actual technique of switching to mobile profile it eventually covers. That works for smaller as well as larger download to speed them up.

Teclast's flash.bat did not work for me. It went to some strange droidboot and could not find a valid installer. So, I just put the image files (except for droidboot) in mirek190 and Tecknight's latest ROM package's ROM folder and it flashed perfectly.

After a couple of reboots I was in Lollipop land. Changed the language and deleted as much Chinese apps as I could without root. Then noticed neither camera worked in Android 5.0. Argh! Teclast's OTA said there was an update. I installed that. No change.

So, doesn't that doom the custom ROMs that Tecknight and mirek 190 are building from this release in terms of the cameras? Many of us need the front camera at least for video Skype, which works very well with KitKat. It's essentially impossible to get any information from Teclast's message board about what might be going on. You'd think an official release would not have camera issues. None of the KitKat releases and custom ROM's suffer from this. It could be BIOS 2.02 is a factor as Teclast has not posted anything beyond 1.03, but as the cameras work in KitKat with 2.02 BIOS, this is probably not relevant.

So, I'm back again to mirek190's KitKat V4.2. Everything works great and I'm not missing anything significant. I get close to 33,000 in Antutu, not much below what's reported with Lollipop.
[Teclast X98 Air 3G] sahor:
I don't know other users, but I would like to know how to unbrick the tablet through a great step by step tutorial for dummies... [emoji9]

I actually don't have the necessity but just in case... If anyone who has had success in this process want to help others without enough knowledge, it would be nice. Thanks

Enviado desde mi A0001 mediante Tapatalk

---------- Post added at 06:51 PM ---------- Previous post was at 06:45 PM ----------

I thought that KitKat it was better, but Tecknight recommended lollipop v3("beta") but works really well... I didn't have any important issues for a daily use... Only if you want to test it.

Enviado desde mi A0001 mediante Tapatalk
[Teclast X98 Air 3G] siezed:
v3 was pretty good, it had minor cosmetic issues nothing major, v4 will be awesome when he figures out whats causing the incompatibility, testing some of his fixes now so hang tight, in the meantime i think his kitkat v4 is the best to recommend as a daily use rom.
[Teclast X98 Air 3G] mirek190:
Let me know if freez or not on that 3 buluds for air 2 .
[Teclast X98 Air 3G] siezed:
[MENTION=2198172]mirek190[/MENTION] Ok mirek did the same thing that caused a freeze last time, installed chrome, gmail then plague inc, opened plague, tried to sign into google it took me to install play games, when i installed play games i got the "plague has stopped working", then 1 sec later the whole system froze up again, going to go try "b" now
[Teclast X98 Air 3G] mirek190:
Ok

I'm waiting :)

But remember clean data ( clean install - that's very important )

And thanks for help because I don't have any issues ...
[Teclast X98 Air 3G] siezed:
Ok "b" did the same thing, i can at least reproduce it reliably, i install the 3 things then sign into google with plague inc. it takes me to google play games then says "plague inc has stopped" then 1 sec after it freezes. Yea i did a factory reset then picked the "flash system only and wipe data" option, on to the last rom now
[Teclast X98 Air 3G] mirek190:
Ok

I'm waiting .

Edit

Ok I reproduced your problem finally and solved problem [emoji12] .

That last c will be works OK .

It appeared the vm machine makes problems ...sorry guys

I release v4.1 in an hour - no freez anymore !
[Teclast X98 Air 3G] supercowz:
What option in the bios did you change ... To a the end brick your device ?

Amazing story ....
[Teclast X98 Air 3G] soudara:
humm just change setting in bios can brick it ?
[Teclast X98 Air 3G] Hendrickson:
Changed something to do with the battery and S5 charger setting. Option: Save and Exit. Then didn't reboot! I was seeing if the setting had any effect of my annoying 50% inaccurate battery meter. It would seem I went a step to far. :( One dead unit. :rolleyes: Yeah i'm an idiot. Well that's my Air 3G day's over, it's been fun.

All in all I recommend the unit, just remember it's a lottery. Poor touch digitizers on some batches, some batches with battery meter issues, some with GPU faults. Just down to pot luck if you get a good mix of hardware.
[Teclast X98 Air 3G] supercowz:
It seem yes ... 2 guy got the same brick after playing with bios... Scary ... Well done teclast ?
[Teclast X98 Air 3G] Frontier:
Maybe you can fix it by reflasing the BIOS without unsoldering the chip, using one of these

http://m.ebay.com/itm/321551954280?_mwBanner=1

http://m.ebay.com/itm/171202453832?_mwBanner=1
[Teclast X98 Air 3G] supercowz:
1) I did change thoses setting on my C6J6... But didn't got brick... Strange ...maybe different hardware ...

2) totally agree with you, buying teclast tablet is like gambling or play lottery...

My first teclast tablet was P90HD and the Emmc was so slow and crappy, the tablet

Almost unusable sometime ....
[Teclast X98 Air 3G] Frontier:
It's not only Teclast, same thing happened to a PiPO W2 and we had to reflash via SPI.

The problem is that these Chinese manufacturers do not 'fail safe' their BIOS implementations. Where vendors like ASUS make sure that incompatible BIOS options with the underlined hardware are not exposed to the user, this is not the case here. BIOS is just glue and init code for the OS and totally depended on the hardware it runs on; incompatible BIOS options drive the hardware crazy.
[Teclast X98 Air 3G] supercowz:
I should order one adapter, since I have some cool old programmer... I did flash lot of chips in te past... I should get arduino to in case ...

Edit : I'm sure I have some of this adapter, I remb already flashing without soldering same eeprom on first Japanese Toshiba DVD player, to get free region ... Long long time ago...
[Teclast X98 Air 3G] Hendrickson:
Yeah I know, I didn't think it would brick it just changing a couple of settings. Otherwise I wouldn't have touched it. Learn from my mistake, don't touch the bios in these machines!

Edit: On the Teclast forum it seems there have been a few bricks to, so not the only one.
[Teclast X98 Air 3G] soudara:
i remenber long time past i restaure all bios with just one motherboard on desktop pc ,just with universal bios utility in dos mode on bootable usb key i think if you conect good pin of teclast bios on good pin on motherboard bios socket you can flash it , just need to boot old motherboard pc with bootable usb key with utility and good files after boot ok , remove stock bios from motherboard socket and connect pin bios teclast on pin socket motherboard and launch utility and flash with correct bios
[Teclast X98 Air 3G] abo.adam:
i intalled the win8.1 from the teclast websit , but i don't know how to activate this copy of windows , i tried a lot of tools but no one has success !!
[Teclast X98 Air 3G] SUMMERBREEZE:
this means we should be very careful about bios and shouldnt change anything we dont know! :(
[Teclast X98 Air 3G] whymoo:
Over at the russian x98 air 3g 4pda thread another person had a issue with bios and had to use a programer to fix them, he posted instructions here...

http://4pda.ru/forum/index.php?showtopic=604923&view=findpost&p=36074161

If you need help with translation, I can read russian, but google translate should work.
[Teclast X98 Air 3G] supercowz:
They explain how fix bios

With this programmer (seek for 24 25 EEPROM Programmer CH341A on ebay arround 5$ to 10$ )

http://www.ebay.fr/itm/CH341A-24-25...ge_ElectroniqueComposants&hash=item5d50d5dbe0

And the clip

http://www.ebay.com/itm/SOIC8-SOP8-...963?pt=LH_DefaultDomain_0&hash=item3cd326eb63

it can flash it without de-solder it ...

software for this set/programmer

http://www.mediafire.com/download/kwjwkj73nxtrreo/CH341AUSBProgrammer.rar

password : ghjuhfvvfnjh

german friends have some brick too and flash it with same cheap spi programmer and clip :)

Teclast X98 Air 3G Windows 8.1 brick :

http://www.android-hilfe.de/teclast-forum/616654-teclast-x98-air-3g-windows-8-1-brick.html

i guess it should be easy to beta testing bios and flash back in case of problem ...
[Teclast X98 Air 3G] SUMMERBREEZE:
please correct the link, it doesnt work
[Teclast X98 Air 3G] supercowz:
sorry my bad...:p
[Teclast X98 Air 3G] SUMMERBREEZE:
i hope they will work for [MENTION=1167021]Hendrickson[/MENTION] :good:
[Teclast X98 Air 3G] supercowz:
they will :)

i order one set...they are really cheap and will do the work... in case i cant reach my old clip/programmer... where are they .. hum ..:D;):confused::confused:
[Teclast X98 Air 3G] SUMMERBREEZE:
then you can EASILY TRY FOR US ;) TO FLASH "C6J6" WINDOWS BIOS to our ''C8J7'' device :good: and be our HERO :cool:

If something goes wrong, you can save your tablet :fingers-crossed:
[Teclast X98 Air 3G] supercowz:
oh yes ... if no one try before me ...russian or german will try soon i guess :D:D

my hope is to turn it soon as possible, since i order it on win 8.1 purpose, because i allready have a android tablet.

after tweaking and modding the C7J8 android 4.4.4 ist a really great tablet, if the hardware run great under win8.1 too ... it will become amazing tablet compare to my C6J6 ...
[Teclast X98 Air 3G] Franckydiam:
Hi Mirek

For information, starting from your Rom 5.0 V4 with which I have a lot of freeze (C9J8), I flashed the ROM 5.0 from Tecknight (dirty instal without wipe data) and I have no more freeze (of course not camera, bios 2.02), I launched full Antutu theCheck gives me a score of 34274. I flash again your Rom V4 (dirty instal without wipe data) and when I want to start the AnTuTu testing, tablet completely freeze.

What is the difference between your two Rom?
[Teclast X98 Air 3G] siezed:
Yes c works !!!!! Well, plague still crashes but no freeze after !!!! :victory::highfive::victory: should I just stay with this flash? Is 4.1 the same as c?
[Teclast X98 Air 3G] mirek190:
I solved that problem ( virtual machine )

Soon ( an hour ) I release uplade v4.1
[Teclast X98 Air 3G] Franckydiam:
cool :fingers-crossed:
[Teclast X98 Air 3G] chrissss91:
In Kitkat, you can check files 'gt_*' in folder : /sys/class/drm/card0/device/

I don't know if it's the same with Lollipop.
[Teclast X98 Air 3G] mirek190:
No - the is still a problem .

Later you can just update to v4.1 - dirty Flash [emoji12]
[Teclast X98 Air 3G] Cozla:
No, it doesn't work. I have c8j7 and wrote few pages ago that camera app causes freeze (black screen and freeze) and antutu also freeze when i tap start testing.
[Teclast X98 Air 3G] paveldrach:
The same. C8j7, bios 2.02, cameras dosent work, system freeze.
[Teclast X98 Air 3G] mirek190:
Wait for 4.1 - no freez anymore .
[Teclast X98 Air 3G] lrobberl:
Are the cameras working on this latest release? I have C9J7
[Teclast X98 Air 3G] siezed:
OK thanks for letting me know, I'll just clean flash again I hate dirty flash I've had too many problems with early windows restores and stuff it makes me afraid of them :p
[Teclast X98 Air 3G] mirek190:
Someone report on c8j7 camera works .

Check few post or pages ago.

But I think he has older bios ...

Edit :

It was c8j6 ...
[Teclast X98 Air 3G] siezed:
Thanks this pointed me to what I needed, its not exactly the same its actually a few text files in the card0 folder but the script is working :)
[Teclast X98 Air 3G] billbmsn:
Mirek: I will try your V4.1 Lollipop when posted even though I need cameras. Cameras work well in my Air II HG9M with your KitKat, so I wasn't thinking that switching back to earlier BIOS would fix the cameras with Lollipop, but I will try it. The earlier 1.03 BIOS fixes the Windows front camera, but has terrible battery issues in sleep/hibernation mode, as you know. I wish I had saved my factory 1.07 BIOS. It actually didn't seem to have any battery issues and cameras worked in both OS. That BIOS must be SOMEWHERE.

Thanks again for all you effort and quick replies here. My tablet would probably have gone unused on the shelf had it not been for you, Tecknight, seized and several others her providing software and expert advice.
[Teclast X98 Air 3G] Rrctrrct:
[MENTION=2198172]mirek190[/MENTION], no one of the sytstem images made the cameras work in Air II HG8N.

No freezes with version c.
[Teclast X98 Air 3G] cconn:
cant install stock 5.0 [FAILURE] OS flash failure fastboot

please help! tried to install teclast 5.0 rom at 75% it fails 08/12/15 22:18:58.557 INFO : Manufacturing Flash Tool V 6.0.43 (build on Sun May 18 12:29:29 PDT 2014)

08/12/15 22:18:58.573 INFO : Loading settings from C:/ProgramData/INTEL/Manufacturing Flash Tool.ini

08/12/15 22:18:58.582 INFO : Using Qt version: 4.8.1

08/12/15 22:18:58.582 INFO : Using XFSTK version: 1.5.5.

08/12/15 22:18:58.608 WARNING: Please select a flash file...

08/12/15 22:19:09.566 INFO : Loading Flash file (C:/Users/Ciarans/Desktop/flash teclast 5.0 rom/flash_wipe_userdata_tecknight.xml)

08/12/15 22:19:09.567 INFO : GP_Flag is set to 0x80000045

08/12/15 22:19:09.570 INFO : Ready to flash!

08/12/15 22:19:15.940 INFO : do_new_medfield_device STARTING TO FLASH

08/12/15 22:19:15.940 INFO : Port 0/0/2 #0: DNX/droidboot phase - SN : Baytrail01D068B7

08/12/15 22:19:21.945 INFO : Port 0/0/2 #0: Booting to droidboot.img success - SN : Baytrail01D068B7

08/12/15 22:19:33.944 INFO : Port 0/0/2 #0: Flashing OS

08/12/15 22:19:33.944 INFO : Port 0/0/2 #0: fastboot -s Baytrail01D068B7 -S 100M erase data

08/12/15 22:20:02.227 INFO : Port 0/0/2 #0: fastboot -s Baytrail01D068B7 -S 100M flash boot "C:\Users\Ciarans\Desktop\flash teclast 5.0 rom\boot.img"

08/12/15 22:20:07.119 INFO : Port 0/0/2 #0: fastboot -s Baytrail01D068B7 -S 100M flash recovery "C:\Users\Ciarans\Desktop\flash teclast 5.0 rom\recovery.img"

08/12/15 22:20:11.965 INFO : Port 0/0/2 #0: fastboot -s Baytrail01D068B7 -S 100M flash system "C:\Users\Ciarans\Desktop\flash teclast 5.0 rom\system.img"

08/12/15 22:23:12.289 WARNING: Port 0/0/2 #0: Process TIMEOUT Failed to execute "fastboot -s Baytrail01D068B7 -S 100M flash system "C:\Users\Ciarans\Desktop\flash teclast 5.0 rom\system.img""

08/12/15 22:23:12.595 WARNING: Port 0/0/2 #0: Retry to execute fastboot -s Baytrail01D068B7 -S 100M flash system "C:\Users\Ciarans\Desktop\flash teclast 5.0 rom\system.img"

08/12/15 22:26:12.658 WARNING: Port 0/0/2 #0: Process TIMEOUT Failed to execute "fastboot -s Baytrail01D068B7 -S 100M flash system "C:\Users\Ciarans\Desktop\flash teclast 5.0 rom\system.img""

08/12/15 22:26:12.945 INFO : do_flash_finished END OF FLASH

08/12/15 22:26:12.980 ERROR : Port 0/0/2 #0: Flash failure

---------- Post added at 10:43 PM ---------- Previous post was at 10:28 PM ----------

On the tablet itself on the log it says could not open /sys/devices/virtual/backlight please help
[Teclast X98 Air 3G] whiget:
c6j7 after flash 4.1 (dirty flash) camera still not working but not freez device. on 4.0 antutu benchmark freez tablet at start and on 4.1 works well :) 33793

much better battery life (on 4.0) then on 3.0.
[Teclast X98 Air 3G] siezed:
Thank you mirek, just clean flashed, so far so good =)
[Teclast X98 Air 3G] tonica:
Thank you fallen.

---------- Post added at 01:43 AM ---------- Previous post was at 01:39 AM ----------

Thank you siezed, I will contact Teclast.
[Teclast X98 Air 3G] mirek190:
Please report if camera works on C9J6 , C9J7 . C9J8
[Teclast X98 Air 3G] Franckydiam:
:( C9J8 bios 2.02 camera don't works

Do you think there is a chance to make it works ?

And Xposed ?

So, no freeze for the moment
[Teclast X98 Air 3G] iamandrebulatov:
[MENTION=2198172]mirek190[/MENTION], thank you for your work!

Will there be a v4.1 for Air II also?

Just wanted to add my feedback to the pool for your lollipop5.0 v4.0:

1. Consistent Wifi instability, as mentioned previously by [MENTION=254881]djmvt[/MENTION] -- turn off/on makes it work again but only for short while

2. Freezes after app crash, as mentioned by [MENTION=834805]seize[/MENTION] -- for me this is usually netflix, and if I don't do anything except watch, it can go for hours, no problem, but sometimes I'll just exit out to the menu and try to go back into Netflix, and it crashes, always followed by a freeze. This has happened with other apps as well but I primarily use it to watch video.

3. Sometimes takes 2-3 hard resets to get into Android, as also mentioned previously by [MENTION=254881]djmvt[/MENTION] -- I am not as sure about the cause of this one, but seems to happen to me most often on basic reboot. I'll select reboot, it'll turn off, I'll see the Chinese-letter logo as it tries to boot up and it'll just go to black screen. I'll then have to hard reset it. Then try again.

-- I always do Full Wipe/Factory Reset before I flash ROMs.

-- I am on an Air II, clean wipe/reset from 4.4.4 v4.1 to this lollipop5.0 v4.0

And again, thank you very much for your work man, it is much appreciated. This tablet is a good value, but primarily in the hardware field. Your ROMs make it so much better!
[Teclast X98 Air 3G] siezed:
4.1 has an air ii file, in mireks SIG, as for the other issues they seem unrelated to ROM would be my guess, have you tried flashing a different ROM to see if they happen?

---------- Post added at 12:43 AM ---------- Previous post was at 12:37 AM ----------

Hey guys just thought I'd share a nice fix I found for the screen dimming in games and stuff, download Velis auto brightness from play store and it will use the camera to adjust brightness, for minimal battery drain just set the camera to sample like every 30 secs or so, seems to override the dimmer though =)
[Teclast X98 Air 3G] iamandrebulatov:
Ah, I see now the "LAST MODIFIED" is Today at 2:39 pm.

I was asking because though it's in the "android 5.0 v4.1" folder, it's titled

so I thought it was the old one. But beside the LAST MODIFIED date, I also see that it's a different size/md5 from last version.

[MENTION=2198172]mirek190[/MENTION], I am assuming the title v4.0 instead of v4.1 for AirII is a typo, right?
[Teclast X98 Air 3G] billbmsn:
Ah, I must have gotten the 3G 4.1 version. Other than the extraneous phone stuff, it works fine in my Air II HG9M with 2.02 BIOS. Antutu was not better than with KitKat. No more lock ups, but cameras still do not work. Everything else seems very good. I'll flash the Air II version.
[Teclast X98 Air 3G] parthabhatta:
Using Mirek v4. Wonderful ROM. Thanks to Mirek. But USSD code note working saying "invalid". Any solurions?
[Teclast X98 Air 3G] alborto:
Same here
[Teclast X98 Air 3G] nolive72:
hello

ran the windows 10 upgrade last night on my c5j6 64gb tablet,everything looks fine,so far, except that my available C drive disk space shrank from 12 to less than 9Gb now

I am reading a tutorial suggesting to delete "temporary Windows installation file" but leave the previous Windows installation in case u want to revert back to 8.1

I guess that sounds about right to delete the temporary file for now, only, until I get to confirm I like 10 better (which is kind of the case right now already)

just need a confirmation from you guys if u could:confused:
[Teclast X98 Air 3G] siezed:
Cameras work fine with my hg9m on 2.02 running mireks 4.1, but that's interesting yours don't on the 3g rom, perhaps people with camera issues can try the air ii file, would lose GPS and 3g but let mirek know how to make a compatible ROM probably.

---------- Post added at 03:27 AM ---------- Previous post was at 03:22 AM ----------

Not really sure what your question is, are you asking if its safe to delete the old windows installation? If so ya it basically only saves that for personal files just in case as far as I know, did you save your win 8.1 key?
[Teclast X98 Air 3G] jsager33:
I don't have 1.07 but I do have 1.08. Before flashing bios 2.02 I made a backup of the bios that came pre-loaded on my HG9M which was version 1.08. I just tested it on my HG9M and successfully flashed it, rolling back my HG9M to 1.08. After that, I flashed back to 2.02 successfully. Both of my cameras are working fine on my tablet with 2.02 and mirek's latest Lollipop 5.0 v4.1.

EDIT: Also note that the 1.08 is for dual boot.

EDIT: I also added the 2.01 bios that I had that I believe was designated for the Air II. This bios flashed successfully on my HG9M and both cameras worked with Lollipop 5.0 v4.1.

EDIT: Removed the 1.08 file since it is non-modded backup and has bricked another users tablet.
[Teclast X98 Air 3G] parthabhatta:
[MENTION=228925]Mirek[/MENTION]

Thanks for you wonderful ROM. I installed v4.0 LP on my c5j6. Works smooth. Testing features. BTW I found two problems.

1. USSD code does not work. It didn't work on default 4.4. too.

2. APN gets unselected once I reboot my tab. I have to select it again to get my data working.
[Teclast X98 Air 3G] billbmsn:
Wow! This should be helpful. I will flash your 1.08 BIOS and see what happens regarding the cameras.

---------- Post added at 06:44 AM ---------- Previous post was at 06:19 AM ----------

The Air II ROM was the same - no cameras. I'm getting ready to try BIOS 1.08 posted by someone who has an Air II with cameras working on Mirek's lollipop ROM, even with BIOS 2.02. Kinda weird. I've never had cameras in any Lollipop, including Teclast's official ROM for the Air II, while they've always worked in KitKat.