yashsingh1/xdaforums huggingface dataset:
[Device Reviews and Information] Palm Trees:
Delete all APN entries and/or try these values taken from the latest apns-conf.xml from Lineage OS 15.1.

<apn

carrier="Orange Internet"

mcc="208"

mnc="01"

apn="orange.fr"

proxy=""

port=""

user="orange"

password="orange"

mmsc="" type="default,supl,dun"

/>

Alternatively, [MENTION=2386505]Alberto96[/MENTION] can copy the stock apn-config.xml file and see if that helps.
[Device Reviews and Information] LUYULKMOIO:
Hi Palm Trees, impossible to change MCC and MNC, as soon as I want to save the changes, it removes the APN.
[Device Reviews and Information] Alberto96:
I haven't touched anything regarding APNs. Wipe data/factory reset and retry, it must work identically to the Stock ROM with no modifications.
[Device Reviews and Information] N10A:
I have installed the GearLabs ROM from fastboot. After complaining with:

target reported max download size of 134217728 bytes
Invalid sparse file format at header magi

the process completed successfully. The ROM feels like stock and looks stable. The only thing: MiraVision looks broken.
[Device Reviews and Information] Alberto96:
Yeah you can ignore that error, don't worry. As regards MiraVision, maybe you have modified some libraries before (pq stuff)? In that case, you need flash the original /vendor partition first.
[Device Reviews and Information] LUYULKMOIO:
When I want to do the factory restoration, it restarts in mode recovery TWRP.

How to do ?
[Device Reviews and Information] Alberto96:
It is really simple. Just go into "WIPE" and then swipe. :)
[Device Reviews and Information] LUYULKMOIO:
Hi Alberto96, I did the factory restoration, always the same problem.

I reinstall :

Stock Rom Build number O00623 release-keys 20180506

and

Stock Rom Build number O00623 release-keys 20180604

It's the same problem, registers APN if I change all, EXCEPT MCC and MNC.

As soon as I want to change only MCC and MNC, the APN do not register.

When I received the tablet, I could record the APN completely with MCC and MNC, the 4G worked well.

Currently, I came back the ROM GearLabs.

Alberto96, Is it possible, to modify the internal file APN or update with a file APN modify?

Thank you in advance for all answers, for my part, I am looking for a solution on the internet.
[Device Reviews and Information] strawsy:
Any other ideas on my issues?
[Device Reviews and Information] Palm Trees:
Pull out your sim, do a factory reset and complete the setup.

Do not put the sim in the tablet until you've finished setup (yes, I know it will ask for a sim, but press 'Skip'), once you've completed the setup put in the sim and see if that works. It has been known to work before.
[Device Reviews and Information] strawsy:
I finally got system.img to install. Just in case anyone else has the same issue I downloaded the standalone SDK and flashed again.
[Device Reviews and Information] LUYULKMOIO:
Hi Palm Trees, I tested, does factory restore and configuration, without the sim card, then I turned off the tablet and inserted the SIM card, but still the same problem.

Currently, I am with the GearLabs ROM, I will put back the original ROM and repeat the test without the SIM card, we'll see.

---------- Post added at 09:48 PM ---------- Previous post was at 09:09 PM ----------

nada, even with the original ROM, I do not understand, before, I can add, a new APN and now it's impossible
[Device Reviews and Information] strawsy:
Can anyone else get *#*#4636#*#* to work when dialing? I get a message saying that settings has stopped.
[Device Reviews and Information] Alberto96:
I can confirm the same issue. I need to check whether this is normal (meaning that CHUWI disabled it for some reason) or not (meaning that something may be in conflict).

07-29 09:21:06.273 1060 2122 I ActivityManager: START u0 {act=android.intent.action.MAIN flg=0x10000000 cmp=com.android.settings/.TestingSettings} from uid 1000
--------- beginning of crash
07-29 09:21:06.275 1506 1506 E AndroidRuntime: FATAL EXCEPTION: main
07-29 09:21:06.275 1506 1506 E AndroidRuntime: Process: com.android.settings, PID: 1506
07-29 09:21:06.275 1506 1506 E AndroidRuntime: java.lang.RuntimeException: Unable to start receiver com.android.settings.TestingSettingsBroadcastReceiver: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.android.settings/com.android.settings.TestingSettings}; have you declared this activity in your AndroidManifest.xml?
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ActivityThread.handleReceiver(ActivityThread.java:3343)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ActivityThread.-wrap17(Unknown Source:0)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1742)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.os.Handler.dispatchMessage(Handler.java:108)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.os.Looper.loop(Looper.java:206)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ActivityThread.main(ActivityThread.java:6733)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at java.lang.reflect.Method.invoke(Native Method)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:845)
07-29 09:21:06.275 1506 1506 E AndroidRuntime: Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.android.settings/com.android.settings.TestingSettings}; have you declared this activity in your AndroidManifest.xml?
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1932)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.Instrumentation.execStartActivity(Instrumentation.java:1615)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ContextImpl.startActivity(ContextImpl.java:862)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ContextImpl.startActivity(ContextImpl.java:839)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.content.ContextWrapper.startActivity(ContextWrapper.java:366)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.content.ContextWrapper.startActivity(ContextWrapper.java:366)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at com.android.settings.TestingSettingsBroadcastReceiver.onReceive(TestingSettingsBroadcastReceiver.java:30)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	at android.app.ActivityThread.handleReceiver(ActivityThread.java:3336)
07-29 09:21:06.275 1506 1506 E AndroidRuntime:	... 8 more
[Device Reviews and Information] ivanfix:
It is possible to reduce saturation with the root and the CF.lumen application on the play store.

In Master filter mode / Greyscale / Saturation setting the value to 0.800 the skin color is much more realistic and less orange.

Tested and working perfectly!
[Device Reviews and Information] orbec:
Gear Labs Rom

Hello All

can anyone confirm whether the Google Voice Assistant works with the Gear Labs Rom? It doesn't work on my stock rom & as I bought the Chuwi to use as a media head unit in my car this is important to me.

Cheers.....
[Device Reviews and Information] strawsy:
​

Works perfect for me.

I also bought this tablet for use in my truck as a head unit. I'm trying to get 4g working but have had no luck on stock rom or GearLabs rom.
[Device Reviews and Information] Alberto96:
I won't implement third-party apps though since i want to keep it as clean as possible.

Considering that i am near to release the v2 of my ROM, could you tell me what issue are you facing with Google Voice Assistant while running on the stock rom?
[Device Reviews and Information] orbec:
Thankyou for your promt reply Strawsy :?

---------- Post added at 03:57 PM ---------- Previous post was at 03:50 PM ----------

Hi Alberto

Basicaly any voice command that I make be it open Spotify or call so & so the only response I get is - I'm sorry I can't help you with that at the moment.

I'm not going to be around much for the next month but once I'm back I'll give your ROM a try.

Cheers ?
[Device Reviews and Information] LUYULKMOIO:
Ok, my problem of 4G has been resolved, the problem had to come from the SIM card.

For those who want to know:

1) I inserted the SIM card in a smartphone (samsung J5), create a new APN.

2) Insert the SIM card into the chuwi tablet and during the installation of the GearLabs ROM , he offered me new options for mobile data.:D

3) I immediately connect the 4G, without inserting a new APN and everything worked perfectly.

It's a bit curious, the way this has fixed the problem, but that to worked.
[Device Reviews and Information] Alberto96:
Working just fine for me on my ROM so i guess i fixed it without even knowing that it was broken xD
[Device Reviews and Information] Alberto96:
GearLabs ROM v2 has been released: https://xdaforums.com/showpost.php?p=77143203&postcount=392

You can upgrade without any wipe, but as always in case of issues please wipe before reporting a bug. Enjoy!
[Device Reviews and Information] rippledrums:
Don't have this tablet yet but it's on my wishlist to buy soon™ and finding your work for it was what made me decide to buy it (apart from the specs).

So thanks in advance for all your work! :)
[Device Reviews and Information] LUYULKMOIO:
thank you very much Alberto96, I ave install your ROM GearLabs v2 and ok everything works well, for me.

The update, a create problems, so I reinstalled everything from the beginning and installed the TWRP and remove the ROOT.
[Device Reviews and Information] strawsy:
I'm experiencing a weird font issue from the quick settings pull down. The text seems distorted on some of the words.

Actually it happens in the app drawer as well. It's most noticable on speed test.https://ibb.co/eOgMg8
[Device Reviews and Information] Serg.dv77:
Жалко,что нельзя установить ваш ром без разблокировки загрузчика.
[Device Reviews and Information] Alberto96:
I switched to a new UI renderer (skiagl), that's currently the only downside but you gain quite a bit of smoothness.
[Device Reviews and Information] Alberto96:
English only on XDA.
[Device Reviews and Information] ivanfix:
Hi Alberto.

I come from the ROM stock with the unlocked bootloader,

I flashed the boot.img then the system.img and after rebooting the tablet goes into bootloop.

What is the correct procedure? Thank you
[Device Reviews and Information] Serg.dv77:
It's a shame that your rom can not be installed without unlocking the bootloader
[Device Reviews and Information] Alberto96:
That's the correct procedure, so you are probably missing something or the downloads are corrupted. Try to full reinstall the Stock ROM first.

There is a long sentence about it in the GearLabs ROM post, i invite you to read it.
[Device Reviews and Information] ivanfix:
I installed your rom with SP Flash Tool and it works.

I replaced the boot.img, system.img and recovery.img (TWRP) files with the original ones in the stock rom folder.

I selected the Firmware upgrade entry on the sp tool and in a few minutes I have the GearLabs rom rooted with twrp recovery installed.

Great!
[Device Reviews and Information] Alberto96:
Never use the "Format All + Download" option, you risk to lose your IMEI. "Firmware Upgrade" should be used instead.
[Device Reviews and Information] ivanfix:
Ok, thanks for the advice.

I'll keep this.

Cheers.
[Device Reviews and Information] LUYULKMOIO:
Hi Alberto96, I noticed a problem with DUAL SIM ( GearLabs V.2 ), the SIM 1 disables itself sometimes, I have to restart the tablet to solve the problem and I also have to change the APN to activate the 4G.
[Device Reviews and Information] Alberto96:
You must have issues with your SIM Card or SIM Slot.
[Device Reviews and Information] LUYULKMOIO:
( is't not a problem of 4G ), for me, is a problem with DUAL SIM.

I did not have trouble of DUAL SIM with the ROM GearLabs V.1 and, the ROM originale.
[Device Reviews and Information] Serg.dv77:
Well, reinstall Rom again
[Device Reviews and Information] LUYULKMOIO:
Ok, I have not had the problem since 24 hours, so it was a fake problem with DUAL SIM , sorry.

Serg.dv77, I used, the 2 methods, "with and without" unlocking the bootloader, for the ROM GearLabs V.1 & V.2, no problem.

I'ave also install the (twrp-3.2.2-0-Hi9Air_withScatter) and Delete the ROOT.

And I also made a backup with TWRP, no problem.
[Device Reviews and Information] Serg.dv77:
Well, how is GearLab better than the stock from Chuwi?:confused::confused::confused:
[Device Reviews and Information] LUYULKMOIO:
It's simple :

GearLabs = is ROM STOCK ( custom rom )

LieagesOS = is no ROM STOCK ( AOSP )

the only difference is that GearLabs ROM ( custom rom ), is optimized, for non-Chinese ( for westerners ) by a developer.

From my research on the net, ROM STOCK is still in beta, chuwi should normally release a new ROM, but when !
[Device Reviews and Information] strawsy:
I saw that as well. Gearbest is where I bought mine and it was fast shipping.
[Device Reviews and Information] uncleabubear:
Chuwi promised early July

https://xdaforums.com/showpost.php?p=76687804&postcount=90

Still waiting, obviously.....
[Device Reviews and Information] LUYULKMOIO:
hi uncleabubear, by curiosity you are with the ROM stock or the GearLabs ?

As stated, Alberto96, the project treble gsi is not perfect yet (beta), I hope they will succeed in doing so, like that we will always have, our tablet up to date.

Currently, it's clear to me, that the ROM GearLabs, is the cleanest.

As I said, we needed a good developer, a big thank you to Alberto96.

For the moment, I will say, that everything works better with the ROM GearLabs V.2, that the ROM stock.

I do not know if Alberto96, is improved the battery, but for me, would say that I have a better autonomy with GearLabs V.2.
[Device Reviews and Information] strawsy:
​

I finally got my 4g on AT&T to work. I had to go through a bunch of stuff until I figured out the fix. I tried changing apn settings several times but no combination gave me 4g. I factory reset several times. Got a new sim card. Since the hi9 air has micro sim and not nano I couldn't switch sim cards from my other devices. So I ordered a nano to micro sim adapter. Put the nano sim from my phone in the hi9 air and got 4g right away. So at this point I knew the tablet was working properly. I went to AT&T and got a nano sim instead of micro. Wouldn't give 4g right away so I put the nano sim in my phone let it connect to 4g then put it back in the hi9. Still no 4g. I then tried the sim in my girlfriends phone and then back to hi9 and finally I have 4g. Not exactly sure why this fixed it but I'm glad it's working.

Now if only Netflix would display in HD. Then this might be my perfect tablet.
[Device Reviews and Information] serial59:
custom rom

there are custom rom of this tablet? because frankly it's a horror this rom of origin, it ram this game does not turn or freeze. for a gamer tablet ca fears anyway
[Device Reviews and Information] Serg.dv77:
Т
[Device Reviews and Information] FrenchSparda:
Think i found the perfect device to replace my old (but still running great) Nexus 7 2013 for my car-install :D

Is OTG working great ?
[Device Reviews and Information] strawsy:
I can't get otg to work at all. I would love to know if someone else got it working and what otg cable/adapter they're using.
[Device Reviews and Information] Opmovers:
kernel issue?? - Kernel adiutor reference

I have played around with all 3 roms and all versions of each (stock/Lineage/Gearlabs).

I notice the same problems in all of them after rooting and installing Kernel adiutor.

In the Adiutor app i notice these errors (consistently in all rom/versions):

1 failed to load all frequencies on the home page

2 when turning on performance mode on the cpu page it seems there is no change in the number of cpu's remaining offline. and very little performance boost is noticed.

3 the battery page reads as only 1000mAh (obvious false reading as the tablet would last less than 2 hours if it where true)

Was wondering if its a kernel issue and if so, Is there a new kernel in the works?
[Device Reviews and Information] Alberto96:
1./2.) Try to switch Selinux to permissive (app on the play store) instead of enforcing, it should allow the app to access more paths required to control the CPU. If the issue persists, switch to EX Kernel Control app, it is usually the most reliable.

3.) It is just an hardcoded value into the framework, ignore it. As already said, i won't be touching the framework so it is not going to be fixed.
[Device Reviews and Information] Rosetti:
[MENTION=2386505]Alberto96[/MENTION]

I flashed twrp via Fastboot and after that GearLabs ROM v2. After first boot it did a reset via system settings and now it is only booting into twrp anymore asking me to type in password to unmount, which I did but nothing happens.

I flashed it again via Fastboot but same problem. Can you help me out?
[Device Reviews and Information] Opmovers:
I had same problem, had to start from scratch with SP tool. BUT! You can speed up the process by overwriting the IMG files in the stock ROM img folder with gearlab IMG files. Even add twrp while you're at it. Just rename the TWRP image file to recovery then drop it into the stock ROM img folder, along with the boot data and system img files from Gearlabs.

---------- Post added at 10:53 PM ---------- Previous post was at 10:48 PM ----------

@Alberto96

One request my friend. Forgive me if if it's a much bigger request than I imagined. but do you think that you could somehow include the Kill app back button option found in developer mode possibly in the next version of gear labs?
[Device Reviews and Information] uncleabubear:
(Correction UN-Official) Android 9.0 Pie GSI Generic System Image available for Download and Install Information only, probably doesn't work on Hi9Air.
[Device Reviews and Information] Alberto96:
Since it requires a framework modification no, it won't be added.

Format /data and reboot.

Misleading webpage title, it is unofficial.
[Device Reviews and Information] Opmovers:
Second that! terrible instructions. But the sources seem proper. However I tried it on my chuwi, followed instructions carefully, No luck.. ( was attempting to flash over gearlabsv2 ) i did read that pie9 gsi must be flashed over android 8.1 I think that gearlabsv2 is only 8.0... any ideas? im thinking to try again but flashing pie9 over Alberto96's lineagev2?
[Device Reviews and Information] Rosetti:
I did but after reboot I am landing again in twrp. Is it because I set up Android password?

Thank you for that! I will try it but I hope that [MENTION=2386505]Alberto96[/MENTION] will have an easier solution for that.
[Device Reviews and Information] Alberto96:
Of course it is...
[Device Reviews and Information] Rosetti:
How can I solve it? Twrp is accepting this password.
[Device Reviews and Information] Alberto96:
It is not an issue, it is how it should work (since your data is encrypted).
[Device Reviews and Information] uncleabubear:
Banggood with discount coupon c0fb46 $176
[Device Reviews and Information] Rosetti:
Ok I took 20180506 stock ROM, replaced boot.img and system.img from Gearlabs ROM and renamed twrp 3.2.2-0 to recovery.img.

Then opened Flash tool, loaded da file, opened Scatter file from my directory and started download and plugged in powered off tablet. Flash was ok but after reboot again only twrp. But no need to type in my password anymore.

Did I missed something?
[Device Reviews and Information] N10A:
I ran into a similar problem with a different device (Nexus 10). I seem to remember the issue was fixed for me after I forced booting the boot partition (fastboot boot boot.img)
[Device Reviews and Information] ciencio2:
Hello, I had the hi9 air for 3 weeks now and have a lot of problems with the wifi signal. I made a few comparative test using my nubia Z7mini and the result is terrible: hi9 air 2.5 mbps, nubia Z7mini 20.3 mbps!! Almost 1/10! Is this a known issue?
[Device Reviews and Information] Rosetti:
Nothing! Rebooted in TWRP again...[emoji43]

---------- Post added at 08:45 PM ---------- Previous post was at 08:44 PM ----------

Nothing! Rebooted in TWRP again
[Device Reviews and Information] N10A:
Did you try to OTA update? If so, flashing stock recovery might get you out of this
[Device Reviews and Information] BOFH2k:
Many thanks for your work, Alberto!

After flashing successfully, my Hi9 Air by default boots into TWRP instead of LOS - unless I reboot to the bootloader from TWRP and then issue:

fastboot continue

Then, I do see the LOS boot animation, with a circle passing from left to right but that keeps going on indefinitely (I waited 30 minutes without avail).

Have neither added GApps nor Magisk via TWRP.

Any idea why that boot loop might occur:confused:?
[Device Reviews and Information] Rosetti:
OK i finally made it.

I flashed again LATEST stock ROM via flash tool. I think before I made a mistake when I used 20180506 stock ROM instead of latest 20180604 when I replaced boot and system img files with GearLabs ROM files (one post before).

After I successfully flashed latest stock ROM I flashed GearLabs ROM and did a reset over system settings. That worked finally. After that flashed TWRP, installed TWRP app and finished Magisk install.

Thanks to [MENTION=8967466]Opmovers[/MENTION], [MENTION=2386505]Alberto96[/MENTION] and [MENTION=7732987]N10A[/MENTION]

I think I might know what I made wrong. I think that I flashed TWRP into boot and not into recovery (if that is possible), messing around with the ADB/fastboot commands. :good:
[Device Reviews and Information] BOFH2k:
Never mind,

flashing stock and then reiterating the flash of LOS 15.1 GSI seems to have done the trick - originally I did flash your TWRP to recovery first...

Cheers:angel:,

BOFH

---------- Post added at 10:58 PM ---------- Previous post was at 10:29 PM ----------

Hi Alberto,

die LOS15.1 GSI image provides the LiveDisplay setting (for reduction of blue light in the evening) in principle, but that fails to activate: When you set it to "night" or "automatic", that change is silently ignored....

Cheers,

BOFH
[Device Reviews and Information] Opmovers:
That is exactly how I did it. one thing I should note is that I had already unlocked the bootloader previously. Another note is that although it's mentioned here and there to only use download mode in SP tool. That never worked for me I've always had to use either format or a firmware upgrade. oh and for some reason I could never use the USB 3. 0 ports only the USB 2. 0

I would recommend doing the following:

Delete all of the image files and redownload them carefully. Sometimes large downloads get corrupted.

Stock ROM, sptool, gearlabs v2, TWRP,

Duplicate the stock ROM folder

Drop the gearlab ROMs and TWRP ROM{rename TWRP to recovery} into the second folder.

Flash the regular chuwi Rom

Set up the stock chuwi ROM just just enough to access the devtools ,unlock Bootloader, USB debugging, enable pc. yada yada yada.

once all that's done take a pin and stick it through that little hole under the volume down button.

{You will need to change the file paths in sp tool at this point.}

Plug in your computer and use SP flash tool to load the second folder with gear labs and TWRP.

Cross your fingers. I hope it all works out, this tablet is running great for me now, almost happy I bought it. I only miss the kill app back button.

---------- Post added at 07:18 AM ---------- Previous post was at 07:10 AM ----------

Damn, should have read your latest post before hand. I'm glad it worked out. I'll leave my reply up incase someone else has same problem.
[Device Reviews and Information] Alberto96:
Our kernel doesn't support native colors adjustments so i had to forcefully disable it, otherwise all modifications would be done via software with an huge impact on GPU performance (that is already low on LOS).
[Device Reviews and Information] thecoolkid:
In my opinion a working option is more important than performance at all times. You can just disable that to have more performance