yashsingh1/xdaforums huggingface dataset:
[Miscellaneous Android Development] ViAlexSt:
You're doing something wrong. Look 14 - 15 pages this thread - about the same problem was.

It's a usual zip-archive, the use of TWRP may not be considered. It contains the firmware that is installed either with flash-driver or by method Mirek.
[Miscellaneous Android Development] pouskidis:
Hi. I have the CH v7 version of this great tablet. And I have a problem:

Lately, it cannot read almost any microSD card I put into it. From the beggining there was a difficulty, but it was able to read 32 and upto 64 Gb. It did manage to read one 128gb I head (kingbat), but no other 128 gb from samsung.

Now it simply cannot read any microSD card. Either it doesn't recognize it or it shows up but scans for errors preparing it for ever....

I intalled 531 and now 729 version of english f/w, no change. I also get a battery drain, sometimes the battery just drops to zero for no aparent reason. Perhaps it is the microSD slot and trying to read the cards...

I could send the tablet back in china since it is under guarantee, but I want to avoid such procedure.

Any ideas?
[Miscellaneous Android Development] perama:
OK! I made the update finally, with success! I was doing the mistake of copying the file of the ROM without unzipping it first. How foolish of me! ViAlexSt my friend, thank you very much! You are always so helpful to us!
[Miscellaneous Android Development] ViAlexSt:
The idea is to do so: send for warranty. The problem does occurs, but the cure isn't yet found. I think the iron problem, not a software.
[Miscellaneous Android Development] pouskidis:
This is what I intend to do, thanks for the info. So, it is not only in my tablet, it happened also in others?
[Miscellaneous Android Development] ViAlexSt:
Yeah... unfortunately. And unfortunately, the cause is unknown. As a suggestion - burn controller of sd-slot.
[Miscellaneous Android Development] Luiz Gustavo Vida:
My onda V919 Ch is shutdown automatic

Hello friends

How are you ?

My Tablet onda V919 Ch is shutdown automatic and the battery is at 75 and the tablet indicates that it is empty, when I turn on the charger it marks 75% and the tablet regular league, taking the charger to reach 75% it makes off

This has happened both in windows as the android.:confuso::confuso:

If you can help me

thank you
[Miscellaneous Android Development] pouskidis:
Same thing happened to me. What microsd card do you use?
[Miscellaneous Android Development] Luiz Gustavo Vida:
Hello dear friend

my microsd card is samsung ?

how you solve this problem ?
[Miscellaneous Android Development] pouskidis:
Well, mine is also Samsung... I tried 128Gb, 64 and 32.

It may have to do with the card reader, don't know.

Currently, mine has been send back for service, it stopped reading cards altogether.

But I suspected that the card reader may cause a battery drain.

What size/exact model of card do you use?
[Miscellaneous Android Development] perama:
I had the same problem plus the over heating problem. I ordered a new battery and changed it my shelf. Now both problems gone!

Maybe this is the solution for you, too!
[Miscellaneous Android Development] mismamente:
Where has you ordered the new battery? Link if possible please.

I have buyed an external battery and with that attached no problem so far. But I must carry it.
[Miscellaneous Android Development] perama:
I bought this one: https://www.aliexpress.com/snapshot...&orderId=79228875087208&productId=32739222909

And I am very satisfied. Order it and send a message to the seller about the model of our tablet. This way he will send you the right battery.
[Miscellaneous Android Development] ViAlexSt:
Page somehow is not found. But, God bless it - any battery will work. Importantly, the size approached. BUT! There is no sense to put more than 7200 mAh - controller AXP288C anyway will take it 7200 mAh. I'm tested - tried to 14000 mAh battery to deliver - to no avail..... In the controller hard-coded volume - 7200. It fulfills. My English is not enough, unfortunately, to all the features of the point - I taught it 20 years ago at University and not really use it :laugh: In short, in this case, the real charge showed - need to physically disconnect the battery. Reconnect the connector and everything seems fine. :D
[Miscellaneous Android Development] tauqeer512:
I did the same steps but getting failed errors in initials but later it start flashing during flashing system again fail but all procedure completed with errors and my tab reboot and stuck on bootloop any help possible?

Thanks
[Miscellaneous Android Development] ViAlexSt:
This problem occurs when users make a mistake with the model tablet: you sure you have the "CH"? Mistaken very often.
[Miscellaneous Android Development] tauqeer512:
Yes it my model is air 3g not ch. I flash again the stock rom using phone flash tool.

Thanks for help.
[Miscellaneous Android Development] shorovsky:
Hola!!!!! Estoy intetando instalar una de las roms y siempre me encuentro el mismo fallo: failed to locate emmc device path for specified controller Flash pailure: Not Found
[Miscellaneous Android Development] shorovsky:
I need to make a factory reset on my onda v 919 air. I can´t do it. Volumen buttons combination doesn't go. And I have tried to flash some of these roms but none of them goes.

Installation begins well but it stops and sends this message: failed to locate emmc device path for specified controller Flash failure: Not Found

Please, I need your help

Thanks a lot
[Miscellaneous Android Development] nico072048:
Hello

I try to install the latest firmware on my onda v919 ch

I followed the different tuto but I can not do it

The android features are as follows

Frimware V1.0.0_V5

Build 20160220

Corrective 2015-11-01

I have normally done the updating of bios v919 AIR CH DUALOS _v117.zip

But how to be sure that it worked.

I root and install twrp0216

Use mirek 20160729 but it does not work ca just erases the data

oem1 acpi table parse error

I do not know what I did wrong

Thanks in advance for the help
[Miscellaneous Android Development] ViAlexSt:
How BIOS can work or not work? If the tablet is running - so everything is fine. To determine the version - to go to BIOS and see version - should be Y05DV117.

The firmware unzipped into correct folder? As indicated in this message http://xdaforums.com/showpost.php?p=68145338&postcount=141 ?
[Miscellaneous Android Development] nico072048:
yes the bios is okay

What version of twrp I should use knowing that my tablet is in 20160220

It is good I managed with the method 1 now how to reset windows
[Miscellaneous Android Development] ViAlexSt:
This firmware version isn't on available resources, so there's no package for getting root access.
[Miscellaneous Android Development] nico072048:
I managed to install the latest firmware with the first method (keyboard hub ....)

Now I little root the tablet

I also need to put windows but the Chinese tuto is not top
[Miscellaneous Android Development] ViAlexSt:
At the moment I can only offer the manual in Russian. It all are easier to translate Google-translator than the Chinese :p Maybe someday I'll gather my thoughts and write the English manual.
[Miscellaneous Android Development] nico072048:
thank's i tried it
[Miscellaneous Android Development] nico072048:
Hello

now My tablet stops all at once
[Miscellaneous Android Development] nico072048:
hello

where buy a new battery
[Miscellaneous Android Development] PK0:
Hello

I am new to this topic.

I have a tablet Onda v919 Air CH 4 / 64GB DualOS

version of android 5.1

compilation 20160216

firmware V1.0.0_v5

bios Y05v114

S / N: P919CCG2V7A .....

I tried to install bios version Y05DV117

Unfortunately without success. System Baje message:

+ ------------------------------------------------- -------------------------- +

| AMI Firmware Update Utility v5.08.00 |

| Copyright (C) 2015 American Megatrends Inc. All Rights Reserved. |

+ ------------------------------------------------- -------------------------- +

Reading flash ............... done

- ME Date Size checking. okay

Secure Flash enabled, the Recalculate ROM size with signature ... Enable.

- FFS checksums ......... ok

4 - Error: ROM file ROMID is not compatible with the BIOS isnt ROMID.

Can I install the firmware 20160729 - International firmware with Gapps and no Chinese apps on the tablet?

If not for which I update?
[Miscellaneous Android Development] mismamente:
Well, after upgrading to latest Win 10 through Windows Update, and restarting or shutting down tablet not fixed, I've found at techtablets that the problem is Wifi driver, and it's solved with an updated driver (from softpedia). But I've tried manual update through Device Manager, and a new driver found. I installed and voila, problem fixed! Now it shutdowns or restart from windows 10 without crashing!

Now, I need a new battery to fix mine, who dies at 47% and discharge fast. Anyone knowns compatible battery (with link to purchase)?

Thanks
[Miscellaneous Android Development] miles2vw:
v1a tablet with win10 only, flashed bios recommended and used 0531 android

touch goes away after it sleeps, mouse still works.

how do I keep the touch working in Android?

Windows is OK I got drivers installed and touch is fine.

I have twrp and su installed for android
[Miscellaneous Android Development] ViAlexSt:
Try a more recent version - 0706 or 0729 - in accordance with feedbacks, it helps.
[Miscellaneous Android Development] hansdracow:
Please, some help needed with My Onda v919 Air 32GB V8

Hello,

I bought an Onda v919 Air 32Gb Dual OS V8... (NO CH Version) I tried to restore Windows 10 and... suprise! restoration stops at 55% and Windows 10 not working anymore. I tried to restore android too and now is gone too... I managed to install Windows 10 with all drivers so it works perfect now but... I would like to get Android back (the dual OS)... First all, I don't even know what version fits ok with this tablet (with no chinese apps and with Play Store installed if possible), and where I can download it (I can't download from Baidu! and there is no way to register now without a chinese phone number!) So please, someone can tell me the correct Android (4.4.4) firmware for this Onda v919 Air (no CH) V8, and a tutorial to follow? And please, if you redirect me to any no Baidu server, or download the firmware and upload to mega (for example) I will be greateful!! Sorry my english but I'm spanish!

Also, I can't get the tablet on DNX mode pressing vol +, vol - and power (restarting from android partition). I suppose I need to make some changes in the BIOS but I don't know which ones...

Thank you very much in advance!

Best regards,
[Miscellaneous Android Development] ViAlexSt:
Easier to ask in the tread of your device: https://xdaforums.com/general/device-reviews-and-information/onda-v919-air-3g-dual-boot-9-7-t3015933
[Miscellaneous Android Development] hansdracow:
Thank you but I don't know if that is the correct model because my tablet does not have 3G... Is the black gold version. I will ask anyway, thanks!
[Miscellaneous Android Development] ntinosterpsis:
Hey guys!

I have a serius problem.My tablet want boot in android and now i have a bootloop.Now my computer cant recongise the device so i cant flash the rom.

How can i fix it?Any ideas?

Also i cant understand what i have to place the rom so i can flash it.
[Miscellaneous Android Development] ViAlexSt:
Can you go to the recovery mode? To execute a factory reset?
[Miscellaneous Android Development] ntinosterpsis:
i cant go with the buttons. I have go with adb commands.Can you tell me the prosedure?
[Miscellaneous Android Development] ViAlexSt:
What could be adb-interface if computer doesn't see the tablet? :confused:
[Miscellaneous Android Development] ntinosterpsis:
What i can do now?I can only boot to windows through the white screen with android logo and windows logo.

Also mine is the V7

My serial number is P919LCG4V9A00120
[Miscellaneous Android Development] ViAlexSt:
PC is needed only for installing Android by Mirek script. You can try a default install - you need only a keyboard and a flash drive (instructions in first post). About the intended result I cann't say anything - I don't know the cause of the problem.
[Miscellaneous Android Development] Mr.Brici:
Hi guys. Thank you for your work. Sorry for the necroposting.

I think this is still the newest version of the bios for this tablet, right? I managed to upgrade my bios for resolving the common issues about the micro SD card but something goes wrong and i can't figure what is it alone, so i subscribed the forum just for posting this. I have of course the onda v919 air ch (v7) and when i try to run the flash.bat as an administrator the procedure stop and print "18 - Error: secure flash rom verify fail". I searched something and i found nothing related to this error with this tablet but only related to other brands and models. Then i entered the BIOS and tried to disable everything about the secure boot, the flash boot and the fast boot but it seems it's already disabled plus i can't modify the values in the flash boot menù.

I checked the version of my BIOS and i have a misterious Y05D011Ployer_x64, 09/03 (March)/2016. Searched online, nothing found about that again. The tablet is working perfectly except for my new Samsung 128GB SD card. Can someone help me figure how can i manage to upgrade the BIOS? I can provide screenshoots if needed.
[Miscellaneous Android Development] ViAlexSt:
I think these questions can be answered only Onda Chinese engineers. It's possible that incorrect versions: you have Y05D011Ployer_x64, new - Y05DV117. According to reports on the Russian forum 4PDA, BIOS version Y05D010Ployer_x64 was flashed only by programmer.
[Miscellaneous Android Development] scotjh77:
Drm missing

Is it possible to add in the rom drm widevine ?
[Miscellaneous Android Development] ViAlexSt:
You can install patch made by KonstaT from here (look for section "Here’s how to add Widevide support on ..." ). Don't be confused that the list isn't Onda - all of these devices on the same hardware platform.
[Miscellaneous Android Development] scotjh77:
Yes yes yes ViAlexSt you're a warrior! it works thanks
[Miscellaneous Android Development] scotjh77:
error
[Miscellaneous Android Development] Mr.Brici:
still fighting the rom

Can you produce more reference? I did a quick search on 4PDA and found nothing about that kind of bios. I'm still fighting that bastard. He can't read any SD card and i want to manage this problem someway.

For now i tried different flashing command (/ECUF /GAN and even /RECOVERY) tryin' to bypass the secure flash damn block but:

1: i don't really know what am i doing

2: nothing works

3: every walkaround i'm finding have for reference a totally different system.

4: really, i have no idea why this tablet isn't a brick, yet.

Attached the backup of Y05D010Ployerx64.ROM if someone is curious about.
[Miscellaneous Android Development] ViAlexSt:
Here is the thread of Onda on 4pda. Here is instruction for flashing BIOS by programmer. But I'm not more help - I havn't flashed BIOS this way.
[Miscellaneous Android Development] Samurbandy:
Sadly I cannot enter the DNX fastboot mode. I have downloaded all tools and now my step stuck in here. Please anyone help...
[Miscellaneous Android Development] ViAlexSt:
How to help you, when you don't specify what you're doing? Process specified in the instruction. Have you read it? First, it should be made a mandatory condition: the tablet is powered off from Android. Second, simultaneously holding the power button and volume "+" and "-".
[Miscellaneous Android Development] pouskidis:
So, could we also try installing Konsta's vi10plus-fix-minbrightness.zip file to reduce minimum brightness? I tried to do it by tampering with intel_backlight/brightnes file, it does not work... Doesn't hold settings after reboot.
[Miscellaneous Android Development] PK0:
the battery to Onda v919 Air CH

I bought on the aliexpress

[V122] 3.8V,3.7V,8000mAH,[3596155] Polymer lithium ion / Li-ion battery for tablet pc,GPS,cell phone,power bank

parameters is in line with the original

It is only a little bit smaller

I installed and working properly

tablet is not overheating
[Miscellaneous Android Development] mismamente:
How to install battery?

How did you install it? Did you do the soldiering, and where points? It seems to come without connector. I don't known if the soldiering is to the connector to motherboard, or to battery controller.

Kind regards.
[Miscellaneous Android Development] PK0:
This battery is supplied without a connector

I used the connector from the old battery and plugged it into the motherboard

The battery has 3 wires: positive (red), negative (black) and white (NCT)

The same wires are in the orgnal connector - 2 red, 2 black and 1 white

I soldered these wires

White and black couples together.

The biggest problem was for me to remove the old battery sticking to the screen casing

So far he is doing well

Is a suitable height of about 3.5 mm

Unfortunately, I can not add any photos
[Miscellaneous Android Development] ViAlexSt:
You can try: there's nothing terrible changes. Here, just in case the archive with the stock library file:
[Miscellaneous Android Development] ViAlexSt:
Why do you want to change it? If in order to increase the value nothing happens. This value is fixed in the firmware of the power controller. If for some other reason, thickness of battery should be no more than 3.5 mm. And a really big problem to pull out the battery from the LCD-screen. Carelessness I damaged it had to be replaced. There are special solvents, but I didn't know then.
[Miscellaneous Android Development] mismamente:
My problem is that battery last 15 min. It discharges fast and when battery shows 75% more or less, it dies, completly discharged, and can't boot It again until several minutes plugged. So I think I have battery broken, and I want to fix it
[Miscellaneous Android Development] pouskidis:
Thanks ViAlexSt. I will try it.

Do we have to disable dm-verity first like it says on the guide? Or just boot in TWRP and sun the zip file?

PS: Although I am also an owner of Chwui Hi12, I haven't tried the above mode, I want to install cyangenmod but hesitate since it is not specifically for Hi12. Sorry for the off topic.
[Miscellaneous Android Development] ViAlexSt:
I used these batteries (2 pieces, of course). If you're sure that the battery is the cause. E-protection board took the original.
[Miscellaneous Android Development] ViAlexSt:
The script setup TWRP already contains everything needs.

[I have Chuwi Hibook Pro] To install Android firmware or TWRP you can feel free to use the script Mirek190 - all the same... After replacing the content for Chuwi, of course.
[Miscellaneous Android Development] pouskidis:
Sorry to report that I tried it and the screen comes out totally black... Shut it down and restored original fix via TWRP...

Saddly it is not ment for onda. Unless there is something that ecapes me, like different settings perhaps. I think I saw one big number in real_brightness file or something... really bigger than the setting the Onda has. Anyway...

Could you suggest me a TWRP and f/w for Hi12 please? I trust your jujgment and I seem to be lost in CHWI forums... Too many voices and TWRPS... ;) Just thought I should go for this but I need a proper TWRP first. Should I try this

http://www.modaco.com/forums/topic/...10-plus-hi10-plus-hi10-pro-hibook-hibook-pro/

or this

https://techtablets.com/forum/topic/tethered-twrp-clean-root-exfatntfs-support-for-hi12/

And I wanna install this after that

http://www.modaco.com/forums/topic/...us-hi10-plus-hi10-pro-hibook-hibook-pro-hi12/

wich already includes the fix lights HAL for minimal brighness that does not work for our onda ...

Your thoughts please? You could send me PS if this goes way off topic.:D

Thanks
[Miscellaneous Android Development] ViAlexSt:
You will find lots of information on 4PDA

Now I have no Onda on hand, so I can't check what works, what doesn't work.
[Miscellaneous Android Development] mismamente:
Why did you took original protection board? Because you took two batteries? Or because these batteries don't have one and it's necesary?

Sorry I have never buyed oem batteries
[Miscellaneous Android Development] ViAlexSt:
Because often parameters of protection board attached to the power controller. In the case of replacing it a new battery just may not be visible.
[Miscellaneous Android Development] mismamente:
Uff, I will not try to change the battery then. I will buy a external battery instead.
[Miscellaneous Android Development] bowidin:
Hello,

does it works on onda tablet V5?

Thx
[Miscellaneous Android Development] pouskidis:
Are there any chances to see a marshmallow on our 919 ch?
[Miscellaneous Android Development] ViAlexSt:
Works. In the absence of sound - upgrade the BIOS.

Stock firmware - the chances are zero. Unofficially, the manufacturers believe that Android 6.0 does not support Intel (or vice versa). In the form of LineageOS 13 - easily. Moreover, there is already a build: here. We can to port (requires minimum changes) or can to compile from source.
[Miscellaneous Android Development] pouskidis:
This is interesting, however I see some models like chuwi hi 12 are not supported. Is it because of intel? So how can this be ported? My phone got really smoother after going from lolipop to marshmallow!
[Miscellaneous Android Development] ViAlexSt:
In general I don't like cyan. Well, just don't like it. On which only the devices tried have always been problems. I believe that the modding stock firmware will be definitely better. But nevertheless, we can try - will not be worse precisely :p I don't have tablet on hand at the moment, unfortunately, so I can only give advice: get the firmware from a similar device, precompiler boot.img and for sure it will start. Next, will see that fix going to have to (wi-fi, bluetooth, etc.)
[Miscellaneous Android Development] pouskidis:
Well, I don't exaclty know how to do that. I tried however cyan on my Hi12 and it is SOOO much better and smoother than original 5.1. stock. And with many more settings and goodies. I think I will stick to it. Only if we could have a modded f/w for our onda... marshmallow or at least something like cyan 5.1. It really rocks!

It also corrects a problem with my sc card and poweramp wich produces erros while browsing through songs ans shuts down the program. 2 Onda 919 ch and a Chuwi Hi12 had the same problem in power amp. The chuwi Hi12 now after updating to cyano it does not produce the problem. Also, the brightness goes way down, something I m trying to do with Ondas and the patch you posted before, but it breaks the android (black screen). Thankfully you provided the original fix and I restored it...

I thing it is worth the try to import cyanogenmod to Onda, even if it is just the lolipop version and not the marshmallow.
[Miscellaneous Android Development] pouskidis:
Does our onda go into deep sleep? Because I notice a drain in baterry (when the screen is off) so significant the tablet won't last a couple of days.

It reminds me of the following case.

Acording to this: http://www.modaco.com/forums/topic/...us-hi10-plus-hi10-pro-hibook-hibook-pro-hi12/

Lineage OS 13 is not recommended for tablets with no cernel source. It works, but there are bugs, such as the tablet does not go into deep sleep mode.

Indeed, when my Hi12 wakes up (using CyanogenMod 12.1) it does recognize and scan my microSD card once again like I just inserted it. Wich means it wakes from deep sleep. The Onda does not do that using the latest (or earlier) international f/w 20160729. My guess is that it does not go into deep sleep, and that is where battery drain comes from, not to mention the errors poweramp produces when trying to read mp3s from the card...

Any chance to correct this?