yashsingh1/xdaforums huggingface dataset:
[Device Reviews and Information] uncleabubear:
Indoors the brightness is fine. Outdoors the tablet is still useable.
[Device Reviews and Information] YuriRM:
Send message to Adam Conway or Idrees Patel

Thanks for this useful guide!

We are now able to raise awareness of this great achievement. A large number of prospective buyers will flock to this tablet. Can you send a message to Idrees Patel ip2unique@gmail.com , please? Let him know the details of your collaboration with phhusson and the fruitful result. He is the author of this XDA news article:

The Chuwi Hi9 Air is a 10-inch tablet with a Helio X20, 8,000mAh Battery, and LTE

by Idrees Patel (March 9, 2018)

https://www.xda-developers.com/chuwi-hi9-air-tablet-announced/

One more thing... your device is rooted. Therefore, Device Info HW is able to extract all the information hidden by Android 8+. We need to know more details on Chuwi Hi9 Air's hardware (LCM, touchscreen, cameras, flash, ddr, etc.). Can you run the latest beta app and upload the information to the database, please?

https://xdaforums.com/android/apps-games/app-device-info-hw-t3558335

EDIT - Adam Conway is also an excellent choice for the news article. He has been quite active adamconway99@gmail.com
[Device Reviews and Information] vodanhdaisu:
Hi there,

Anybody use this tablet to play a DTS *.mkv movie ?
[Device Reviews and Information] YuriRM:
Is that supported in AOSP 8.1? [MENTION=7107296]Emoclaw[/MENTION] can you test a DTS *.mkv movie in your device, please?
[Device Reviews and Information] vodanhdaisu:
I've not installed 8.1 yet
[Device Reviews and Information] YuriRM:
Do a nandroid backup of your device first. You may need to restore your ROM.

EDIT - ask the users of the AOSP 8.1 Phh-Treble thread beforehand.
[Device Reviews and Information] do1fmd:
Is the screen scratch resistant like Gorilla Glas or is it really sensitive to scratches?
[Device Reviews and Information] HardlyGiven:
Try this?:

https://xdaforums.com/apps/mx-player/mx-player-custom-codec-dts-support-t2156254
[Device Reviews and Information] vodanhdaisu:
As I mentioned above. I tried exactly what you recommended

But when i choose to play, it say that sound codec is not supported. Maybe it is caused of cpu, not the playing software
[Device Reviews and Information] YuriRM:
How to solve AC3-DTS-MLP audio problem in MX Player

https://www.pcmobitech.com/how-to-solve-ac3-dts-mlp-audio-problem-in-mx-player/

5 video players that can play all Videos & AC3 audio in Android 2018

https://www.pcmobitech.com/5-video-players-that-can-play-all-videos-ac3-audio-in-android/

EDIT - a new version of MX Player was released on 21th May 2018

https://play.google.com/store/apps/details?id=com.mxtech.videoplayer.ad

EDIT 2 - Supported media formats of Android 8.1

https://developer.android.com/guide/topics/media/media-formats

Media Formats specifications of Chuwi Hi9 Air

https://en.chuwi.com/product/items/Chuwi-Hi9-Air.html

Graphics specifications of MediaTek Helio X20

https://www.mediatek.com/products/smartphones/mt6797-helio-x20

DTS Headphone:X immersive sound technology is supported by the new Helio X20

https://dts.com/media-center/dts-he...n-mediateks-powerful-new-smartphone-processor
[Device Reviews and Information] distante:
Dod you have to pay import taxes for it?
[Device Reviews and Information] Hackerjac:
If i order from outside EU and the walue is over $11, there is always a chance that i might have to pay import tax (25%) and a fee of $25 to the transport company for collecting the payment
[Device Reviews and Information] rippledrums:
https://m.pt.aliexpress.com/item/32871807272.html?spm=a2g0n.wishlist-amp.item.32871807272

This one can be sent from a Spanish warehouse so there should be no import taxes. Sure you pay a bit more but still probably less than the taxes and (if it's anything like Portugal) you don't have to go through the bureaucracy of customs services.
[Device Reviews and Information] lolo20133:
Could someone that alredy have tell me if it gets too hot on the left top corner? I´ve bought one my self and it´s very hot. CPU-Z mark temperatures arround 75ºC when running Antutu. Is this normal? Thanks
[Device Reviews and Information] Alberto96:
Yes the Helio X20 runs hot due to the old manufacturing process.
[Device Reviews and Information] lolo20133:
But 75ºC are not too much? Or is it normal? More important, is it dangerous for the tablet?
[Device Reviews and Information] Alberto96:
No, it will automatically throttle the CPU as soon as it reaches a critical point. For a mobile chipset you can expect up to 90c in some cases.
[Device Reviews and Information] anonymous1:
userdata: PMT changed for the ROM

Tried to install TWRP via SP Flashtool.

Get the following error: 'userdata: PMT changed for the ROM; it must be downloaded . Please select "format all + download" scene and try again.'

Read in an earlier post not to 'format all as risk of losing IMEI etc.

Is there a way to install TWRP? (And is it not installing as I upgraded to latest OTA firmware from 9th August).

Would fastboot method work?

Would TWRP remain if OTA upgrade done or would OTA not be possible?

Thanks for any help. :good:

UPDATE:

Downgraded firmware to latest on CHUWI forum: chuwiX20_8.0_X970_T10_D3_4+64_2560x1600_5025+3L2_å¸¦GMS_å…¨çƒç‰ˆ__20180604OTAå››ç‰ˆ

Installed TWRP latest TWRP on your AFH site and rebooted - tablet asked for password (?!) and then after lots of wrong entries, hard reset.

Reflashed again and tried to go into recovery, but only usual Chinese recovery found.

Will try fastboot method on latest OTA and report back.

:good:

UPDATE 2

Looks like I'm stuck on the 4th June ROM for now - OTA for 9th August now not showing up (has anyone else updated to it?). It changed the boot animation and had June 2018 security patches. Not sure why it's not showing up in the updates now? :confused:

Will try fastboot method.
[Device Reviews and Information] anonymous1:
UPDATE

OK, on the 4th June ROM, unlocked the bootloader and 'fastboot flash recovery twrp twrp-3.2.2-1-Hi9Air.img' still gives a Chinese recovery.

I now also have an annoying message on the logo screen before bootanimation:

'orange state'

'your device has been unlocked and cannot be trusted'

'your device will boot in 5 seconds'

Going to give up on rooting this as I don't seem to be getting anywhere. Wishing I'd stayed on the 9th August OTA as security patches were later now and can't seem to get the latest OTA. :(

Will SP Flashtool back to 4th June Rom to see if bootloader locks again. If not is there a way of locking it again?

Hope my afternoon of flashing has proven to be of some use to others? :good:

Reflashed and annoying message on logo screen has gone. Will wait to see if there are any suggestions before trying to reflash and reboot again.

Thanks for any advice. :)
[Device Reviews and Information] R@mpage:
similar situation, I was running on August patch too.

I unlocked the bootloader and flashed TWRP (using fastboot coomand)

Orange state..blabla the system wasnt starting anymore; only TWRP. Looks like the oem unlock command wiped the whole system..

reflashed the OTA June ROM and tried again... same situation... only twrp start..I guess you can only flash a custom rom a this point...

Anyway I reflashed the June OTA Rom and now im stock again but unable to get August patch anymore.
[Device Reviews and Information] fanoush:
I got it from GearBest https://www.gearbest.com/tablet-pcs/pp_1830880.html?wid=1433363 and they either have warehouses in Europe or from China warehouse you can select something like EU Priority Line shipping which does it in some way that for you it looks like it comes from Europe so there is no import tax to be paid. Mine came from Germany via DHL even if ordered from China and everything was OK.
[Device Reviews and Information] Alberto96:
20180811 Stock ROM: https://unibari-my.sharepoint.com/:...JClS0SJdCNjBgBPPX_dX7UX3UpbOZIRKE2Zw?e=5AjOIi

Updated TWRP and GearLabs ROM coming later.
[Device Reviews and Information] MoHed:
Help - Stuck on boot animation

Hello All

Just bought a Chuwi Air 9. After playing with it for a couple of days.

I unlocked the boot loader successfully.

I flashed boot.img and system.img from fastboot and got a successfull OKay

My tablet keeps on the boot animation (four jumping circles) and does not continue booting....

I have checked the md5 of both downloads, it matches.

I have reflashed twice from different laptops.

What do you think is my problem and how to fix it .

I can access tablet though fastboot and TWRP.
[Device Reviews and Information] Alberto96:
Boot into recovery mode, wipe data/factory reset, and reboot.
[Device Reviews and Information] dewirox:
very poor battery life

was fully charged at 100%

then i turn off the screen and after 12 hrs , battery was 50%

i check battery data usage

it says screen on time was 4m

---------- Post added at 01:10 AM ---------- Previous post was at 01:09 AM ----------

can teach me how to root please
[Device Reviews and Information] uncleabubear:
If you get error 'PMT Changed for the rom: it must be downloaded in SP Flashtool' go to format tab and select start and connect cable. Then go to download tab select download and reconnect cable.

First impressions;

New boot animation > nice

Play Store > Settings > Play Protect certification > Device is certified > Whoop

Security Patch level 5 June 2018 > Better

Rom seems smoother, my imagination?

I still need to test Netflix, Teamviewer and Chromecast.
[Device Reviews and Information] uncleabubear:
please read OP
[Device Reviews and Information] distante:
The price difference are significant thought. "€156.46" from China (CN-099) and "€215.76" from Fast-23. From Amazon you can get it from €210 (there is a €20 coupon now) :confused:
[Device Reviews and Information] MoHed:
Worked

Thank you Alberto. For everything...:D
[Device Reviews and Information] dewirox:
i read already but still don't know

any video guide out there?
[Device Reviews and Information] R@mpage:
Guys,

with all the tries I did flashing and restoring the tablet, I realized I had lost the original imeis.

Do you know a way to modify them? I'd like to restore the ones written on the box. The new ones I got, are not properly recocnized (https://imei24.com/) . Could this be the reason why I'm not able to get OTA updates anymore?

Ty for any help:)
[Device Reviews and Information] Alberto96:
Never Format!!! Only Firmware Upgrade.
[Device Reviews and Information] uncleabubear:
Ok. What do we do about this error message?
[Device Reviews and Information] Alberto96:
With "Firmware Upgrade" you can't get this error (unlike "Download only").
[Device Reviews and Information] anonymous1:
Try this: https://android.stackexchange.com/questions/8570/how-to-fix-invalid-imei-after-factory-reset

or this: https://www.tricksfolks.com/change-imei-android-mtk-device-no-root/

Hope it helps.
[Device Reviews and Information] anonymous1:
Sorry Alberto,

On the June ROM and have tried to flash the recent update you linked to, but getting this error both on 'Firmware Upgrade' and 'Download':

'PMT Changed for the rom: it must be downloaded in SP Flashtool'

How to get around this?

Thanks for all your work.
[Device Reviews and Information] Alberto96:
Are you using the latest SP Flash Tool version? (5.1828)

It is impossible to get this error on latest versions, guaranteed.
[Device Reviews and Information] anonymous1:
Will try latest SP flashtool and if it doesn't work, will try to do a local update manually with the zip file downloaded.

---------- Post added at 04:21 PM ---------- Previous post was at 04:20 PM ----------

With latest SP FT v5.1824, following error message:

'ERROR: STATUS_SCATTER_FILE_INVALID (0xC0030001)

[HINT]:'

But no hint! :confused:

Just noticed, when trying to download the folder, the zip is only 59.7MB in size, so doesn't have the system.img file in it.
[Device Reviews and Information] Alberto96:
It is not a package meant to be used with the Local Update option.
[Device Reviews and Information] anonymous1:
Will try downloading each file in the folder individually!

:fingers-crossed:

Basically trying to download the entire folders (three times and each time) skips the following files:

sytem.img

tee-verified.img

userdata.img

vendor.img

May be the reason for errors?
[Device Reviews and Information] Alberto96:
Good luck... :silly:
[Device Reviews and Information] anonymous1:
Just realized the issue:

If you try to download the entire folder, any files bigger than 18MB are truncated and corrupt.

If I try to manually download the files, it won't let me download any files bigger than 18MB!

:crying:

Will try another browser on another 'puter.
[Device Reviews and Information] Alberto96:
It is an archive, not a folder.
[Device Reviews and Information] anonymous1:
Having difficulty downloading as an archive. Link opens up as a 'folder', but can see from folder icon at the top that it's zipped up'.

Is there anywhere else it can be uploaded to, please?

Thanks :highfive:
[Device Reviews and Information] anonymous1:
OK, Internet Explorer downloading as a zip file! :) Can't believe I had to resort to that browser!

Is it OK for me to make a mirror to another download site, Alberto? Save others some of this hassle.

All fine with the downloaded archive.
[Device Reviews and Information] fanoush:
Yes, it is called fast-23 because it is fast, not cheap ;) From china warehouse with EU priority line it was for ~179usd including shipping. I just had to wait ~10 days with DHL tracking code still in some initial state (as it was probably shipped from china to germany in some other way) and then it took few days from germany with tracking. I don't know how it entered germany but what I received was sent from germany so no tax for such package.
[Device Reviews and Information] uncleabubear:
Click here
[Device Reviews and Information] orbec:
Anyone else using Android Auto?

I bought my Chuwi specifically to run AA as a head unit in my car. Only trouble is the voice commands don't work. I tried a factory reset today & I now find some voice commands work in Google Assistant but still no voice commands work when in Android Auto. So if any one else is running AA can you tell me if your voice commands are working.

Cheers....
[Device Reviews and Information] uncleabubear:
Another build 20180809 download
[Device Reviews and Information] uncleabubear:
Latest SP Flash tool
[Device Reviews and Information] Serg.dv77:
What is different from the one that Alberto laid out?
[Device Reviews and Information] uncleabubear:
It's the same.
[Device Reviews and Information] anonymous1:
Waiting (im ;)) patiently

:fingers-crossed:
[Device Reviews and Information] rozak:
Well, after all the flashes I have managed to somehow loose the IMEI settings of the device.

Even though I have reflashed the original NVRAM partition, I am unable to fix the problem.

I have tried the utility from chuwi forum, but even though I have managed to have a successful run, still he problem remains.

In MTK Engineering mode, I see no option for IMEI or modem communication.

Any ideas?
[Device Reviews and Information] R@mpage:
I lost the original IMEIs too

If you use sp flash tool to flash the stock rom and select format all+download you shoud get new IMEIs.

I cant see no option for imei in mtk engineering mode either, maybe you have to root to replace the original ones.

p.s. are you rozak onda forum v975m?
[Device Reviews and Information] rozak:
Thank you.

I will try it tonight and report back.

ps. Yes...
[Device Reviews and Information] Serg.dv77:
Without administrator rights you can not change imei
[Device Reviews and Information] Palm Trees:
Isn't the IMEI written on a sticker on the original package?
[Device Reviews and Information] uncleabubear:
I haven't found it
[Device Reviews and Information] Alberto96:
Me neither, and it was from Amazon.
[Device Reviews and Information] Palm Trees:
That's weird. Wonder why Chuwi made that decision. I got a cheap Onda tablet, just checked, and yep IMEI is there. Not on the box, but the plastic film (left it in the box).
[Device Reviews and Information] anonymous1:
Two IMEI numbers on a sticker on the CHUWI box and another sticker with the numbers inside the packaging.

Not sure why you wouldn't have yours? :confused:
[Device Reviews and Information] koolershaker:
same here ordered from gearbest
[Device Reviews and Information] Alberto96:
New TWRP available in the dedicated post, a brief but detailed guide has been added too: https://xdaforums.com/showpost.php?p=77079814&postcount=332
[Device Reviews and Information] Alberto96:
Considering that the latest Stock ROM is already officially certified and more polished, i think it is time to abandon the GearLabs ROM (that was just a temporary thing as already said) and move directly to LineageOS. What do you think? Consider this as a public poll, waiting for your answers :)
[Device Reviews and Information] koolershaker:
yes, please lineage os. and a twrp flashable image or zip would be nice if thats possible

i'd rather have a kind of working lineage os instead of a kind of working stock rom
[Device Reviews and Information] R@mpage:
yes, a working LOS would be awesome =)
[Device Reviews and Information] rippledrums:
Don't have the tablet yet but that would give me more reasons to get it. :D

:good:
[Device Reviews and Information] anonymous1:
Great work Alberto...get ready for a flood of questions. :D (I hope not).

Lineage OS would be good

Thank you.

(Grazie per la pazienza e per avermi aiutato a migliorare.)
[Device Reviews and Information] Alberto96:
That would be useless. Just copy the "recovery.img" file inside your internal storage, then via your already present TWRP just go to "Install", then "Install Image" and finally choose the recovery image. ;)
[Device Reviews and Information] Bycek:
Maybe just one last GearLabs ROM? So we can get optimized stock with certification ...

Wysłane z mojego ONEPLUS A5000 przy użyciu Tapatalka
[Device Reviews and Information] anonymous1:
Thanks again Alberto :good:

Used the SP Flash Tool guide:

When TWRP boots up, it asks for a password (which I and I don't think anyone else has?). It can be cancelled to get into TWRP proper, but the data partition is encrypted and when connected to PC, tablet will not allow access to put SU/Magisk zip file onto tablet.

Bypassed this by putting the Magisk installer zip file onto an SD card and installed OK from the SD card.

TWRP does not stick and rebooting into recovery boots into Chinese recovery. Not too bothered by this as now have root. :good:

Odd...TWRP will not load with Vol down and Power, but Xposed 'reboot to recovery' loads TWRP?! Still encrypted data partition, though.

If I need to boot into TWRP will just have to go through the SP FT method once again, which is a bit tedious. Is there a way to keep TWRP permanently?

All the best.

---------- Post added at 07:33 PM ---------- Previous post was at 07:30 PM ----------

If Alberto has time, that is certainly a very good idea to have an optimized stock ROM with GMS certification and some apps replaced with stock Google apps (e.g. remove 'Browser' as Chrome already there, remove Duo, Hangouts etc as they can be installed manually if needed).

:good:
[Device Reviews and Information] koolershaker:
yes i've done that, i ment the los images if they comming...
[Device Reviews and Information] Alberto96:
My ROM was already certified ;)
[Device Reviews and Information] Alberto96:
Oh got it. I think that is going to happen.
[Device Reviews and Information] distante:
Is "EU priority line" one of those?
[Device Reviews and Information] rozak:
OK, after flashing latest rom with "Format & Download" option, new IMEIs were created.

LTE (4G) is working and Network Cell Info app reports that it sees signal in bands 3,7,20.

Phone call was successful!

Seems to work fine!

If only we could find a way to prevent the random change of Wifi and Bluetooth MAC address after reboot...
[Device Reviews and Information] LUYULKMOIO:
hi Alberto96, if your GearLabs ROM 3 would not matter, at the performance level, compared to the ROM STOCK, , so it's better to keep ROM STOCK, which will allow future updates.

So, for my part, I would choose to also go to LineageOS, which will allow may be, the latest versions android 8.1 Oreo, 9 Pie, 10,...

PS : The ROM LineageOS that you speak, is part of the project treble GSI or others ?
[Device Reviews and Information] pr3mi3r3:
Yes we need the LineageOS, when it will come?
[Device Reviews and Information] Alberto96:
Yesterday.
[Device Reviews and Information] anonymous1:
Good answer...I'll get my time machine. ;)
[Device Reviews and Information] Rosetti:
You have to choose Germany line. It is priority line especially for Germany. You don't have to pay taxes and customs with that option.

---------- Post added at 10:41 PM ---------- Previous post was at 10:36 PM ----------

LOS would be awesome and I understand your opinion when stock ROM has reached a good stable level.

Can you fix the Google photos error in V2 or do I have to wait for LOS?

Thank you
[Device Reviews and Information] uncleabubear:
Magisk patched_boot.img Stock Rom Build number O00623 release-keys 20180809

How to use, see OP
[Device Reviews and Information] fasty:
Did anyone ever get a wireless OTA update on this machine?

I have not, but I'm curious to know whether my tablet is working correctly.

Is OTA capable of working if the tablet has no serial number?
[Device Reviews and Information] N10A:
Yes.
[Device Reviews and Information] fasty:
Yes, you did get an OTA update,

or Yes, it can be updated even with no serial number?

or perhaps both?

(thanks...)
[Device Reviews and Information] N10A:
Yeah, perhaps both. Mine got an OTA update and successfully installed it as soon as it was put online. Its serial number appears as "unknown".
[Device Reviews and Information] fasty:
OK; thanks. Would you mind telling me what firmware version you have now?
[Device Reviews and Information] N10A:
I'm now using the latest GearLabs ROM found in this thread. It's fast and very stable.
[Device Reviews and Information] fanoush:
No, it was really just called "EU priority line". I used it when buying mine and still saw it two days ago when the tablet was for $177.99 and this shipping option was free, now tablet is for $175.99 and I no longer see this shipping option, just "EU express" for $5.69. Looks like it changes with different discounts and deals even for same shipping destination.
[Device Reviews and Information] Alberto96:
I will probably take advantage of Project Treble but it won't be a GSI.
[Device Reviews and Information] MoHed:
Modifications

Hi everybody; Weila Alberto

The last Chuwi firmware is excellent....

Are there any modifications we can apply to the kernel ?

Any software that can be uninstalled ?

I have updated to the latest firmware using fastboot (boot and system images).

Is it necessary to flash the other partitions (Vendor, Tee, etc ...)?

My tablet works very well except that TWRP cannot access the data partition (Please enter password....I have none). I have formatted the data partition but still get same error. Any suggestions ?
[Device Reviews and Information] LUYULKMOIO:
Hi Alberto96, thanks for all you do for our chuwi Hi9 Air.

I did a backup of the GearLabs ROM V.2 which works very well, we never know.

Now, I will install the last firmware and see the improvements.

---------- Post added at 05:57 PM ---------- Previous post was at 05:26 PM ----------

Ok,I ave install the last firmware, we will see the improvements over time.
[Device Reviews and Information] uncleabubear:
Magisk Module Youtube Vanced. (No Ads, Background player)

To install uninstall youtube update, turn off auto updates in play store.

Install through Magisk.

Took me a while to get working!
[Device Reviews and Information] Alberto96:
Well if I update my GearLabs ROM I may consider to not include any YouTube App for best compatibility with this module :)