yashsingh1/xdaforums huggingface dataset:
[Device Reviews and Information] abdulhamid1978:
I have tried factory reset, reinstalling game and also reinstalling firmware. Also tried downgrading firmware to Stock Rom Build number O00623 release-keys 20180506. Same thing happens. It seems like the CPU heats up. Before tablet restarts the game actually freezes. One time the tablet made a screeching noise before rebooting.
[Device Reviews and Information] stab244:
Does the built in OTA checker stop working when the bootloader is unlocked? I did that a while ago, but put the tablet away and now it's not seeing any of the new stock updates despite only having the June update installed (with February security patch).
[Device Reviews and Information] banch:
Hmm,

Im getting totally frustrated.

I´ve tried all the roms and seems everything crashes mostly when pressing the round button to get to desktop.

Tried to install Gearlabs V3 ROM but when it first starts its orientation is opposite as it should be. like in vertical position its straight and in straight its vertican and the buttons, accept, next, keyboard is like that too so its kinda impossible to get thru this. Any help for this?

Am I doing something wrong when flashing? I open SP Flash Tool, take scatter file and flash rom, then boot to android and then system off and then flash system.img and boot.img again to device. (Gearlabs V3)

With Lineage ROM I get random crashes aswell. I´ve tried different roms before flashing these Lineage/Gearlabs roms.

---------- Post added at 02:50 PM ---------- Previous post was at 02:40 PM ----------

If I dont use SDCARD what should I replace that line for?
[Device Reviews and Information] Minotavrs:
Try this please

1. Download this stock [from 1st post] Stock Rom Build number O00623 release-keys 20181122

2. Open SP_Flash_Tool_v5.1728.00.000 [download it from 1st post] \

3. Use the attached scatter.txt file

3b. use the MTK_AllInOne_DA.bin[1st post]

4. Press Download button

5. Connect your Chuwi to your windows machine at power on mode

6. Press with a needle the reset button near the volume down key

7. Wait 3 seconds until you see SP Flash Tool to connect it and downloading the stock rom...

8. Wait it until you see the verification message of Download Complete

9. Disconnect chuwi usb cable from windows machine

10. press Power on to boot your device

Tell me if this fix u problem./..
[Device Reviews and Information] banch:
Okay, I did exactly by told above and now first time booting up. I´ll report in an hour how it went.

I really hope it does work this time.

---------- Post added at 04:44 PM ---------- Previous post was at 04:40 PM ----------

First crash happened before I even had time to setup tablet. While asking WIFI password it crashed. But Ill report what happens next time.
[Device Reviews and Information] Minotavrs:
hmmm..... :crying::crying::crying:
[Device Reviews and Information] banch:
Alright!

Second crash happened after about 10minutes of use. Just using Gmail and Chrome.

Crash happens when pressing the o button to get to "desktop". The same problem was before with this.

Has anyone else noticed the problem?

Should have I wiped the data before starting the download on SP Flashtool?

Sincerely,

Banch

EDIT1: Now after few crashes it has crashed when using file manager or getting away from downloads app.

EDIT2: After crash and when tablets asks PIN code I noticed a notification with a triangle and ! inside triangle and the notification said Simprocessor but after getting past PIN code thenotification goes away and I cannot find it anymore.

Im lost.

tried that logcat thing but I cannot seem to find a log about what crashes the tablet!
[Device Reviews and Information] Minotavrs:
contact to service@chuwi.com and describe the problem... or open a thread to official chuwi hi9air thread here

AT LAST....

Doing a wipe data/factory reset, and make sure you select "wipe cache partition.

Make a clean install to ur device... do not download apps from play store untill you se if your system is stable.... Perhaps un application crashe your home button sequence

Have you tried a different launcher?
[Device Reviews and Information] banch:
This happens even before I´ve even installed any custom apps to this device. I feel like when I got the tablet and it was the oldest rom from 05 it worked well, played fortnite, antututu benchmarks etc, all this crashing began after the 08 update was applied to this device. I tried to install the oldest firmware back but there were some errors and couldnt get it installed.

But so far the Gearlabs V3 ROM has been one which hasn´t crashed but it has the orientation problem. When vertical its the opposite and vice versa and the buttons are in wrong places so hard to get past the setup even.

EDIT: Now tried to install EVIE launcher and the exact same problem happened. I have no sim cards in. no sd card. its very odd what does this.

EDIT2: After Chrome browser asked if its allowed to use disk or save data I denied access and now the tablet has been running for 40minutes without a crash.

EDIT3: While denied the screen to turn. only using landscape mode. I did this change aswell while the previous edit too as I saw some ROM:s ad 4pda forums to be tagged as LANDSCAPE. So changed to use only landscape mode.

Could this be the problem and how to fix it?
[Device Reviews and Information] tzadka:
Hi,

I'd like to update my tablet. OTA can't be found by the tablet. I have the zip file of the latest ROM (Nov.).

Can I simply select the package using the updater in the tablet or should I do it using SP flashing tool?

Will using SP flashing tool erase the data on the tablet?

Thanks!
[Device Reviews and Information] Minotavrs:
Αlready known issue only with a factory reset you can see again the OTA .

---------- Post added at 07:33 PM ---------- Previous post was at 07:24 PM ----------

I strongly believe that your problem has to do with the installation corruptions of a non stock rom . Try to install again older stock roms like Stock Rom Build number O00623 release-keys 20180506 or Stock Rom Build number O00623 release-keys 20180604 or Stock Rom Build number O00623 release-keys 20180809 from 1st post

.... to see what happens...
[Device Reviews and Information] banch:
I´ve now tried every stock rom except O00623 release-keys 20180604 which I just put in my Chuwi Hi9 AIR. Every other rom has caused the crashes and reboots. Lets hope this works! I´ll report what happens with this one!

EDIT: I really appreciate all the help I´ve got here and if we get this problem solved, lets see how I can compensate the time you´ve put in to help me out with this! Thanks in advance already

---------- Post added at 01:42 PM ---------- Previous post was at 01:13 PM ----------

I´m sad to inform this build too is crashing my device. Even the download via SP Flash Tool everything goes well but it just keeps crashing. Im not sure whats should I try anymore...

---------- Post added at 01:47 PM ---------- Previous post was at 01:42 PM ----------

Now the problem is the fota.application which crashes the system.
[Device Reviews and Information] banch:
Here is the picture of the crash log:
[Device Reviews and Information] Minotavrs:
The FOTA app is responsible to make Chuwi over the air updates try this..

1st... Try to make every reset except factory [like DRM , Network Settings reset, reset app preferences] from Android Settings reset menu

if not fix ur prob

2nd... Try to wipe data for FOTA app from apps menu

if not fix ur prob

3nd... make a factory data reset from settings --> reset menu

tell us what you did
[Device Reviews and Information] amg314:
To make screenshot without root you need to press Power Button and Volume Down buttons synchronously and hold them for about half a second.

Having root, you can add ScreenShot button to bottom menu (see my post on Page 88).
[Device Reviews and Information] banch:
Hello sir,

First I did the first thing you suggested. Took about 20 minutes to crash. Then I did the second thing you suggested and I disabled the whole OTA update from apps menu. Crash in 5minutes. Third time I did the whole factory reset, disabled WIFI and added SIM card to see if there were any effect by that. No effect - Still crashing.

ROM: O00623 release-keys 20180604

Send a ticket to Chuwi aswell but no answer due the holidays and I suppose there should be a way to get this device working properly anyways.

Any help would be appreciated if someone has anything else to suggest I should try out!

Sincerely,

Banch
[Device Reviews and Information] amg314:
To Banch:

========

I have no reboot issue, but I frozed both AduptsFotaReboot.apk and AduptsFota.apk using 3C ToolBox. Freeze = disable app without removing it.

Root is needed!

*------------------------------------------------------*

Please read for more details:

https://android.stackexchange.com/questions/32285/how-does-freezing-an-app-work-technically

How does freezing an app work technically?

*------------------------------------------------------*

In terminal:

su

pm disable {package_name}

pm disable com.adupts.fota

...................

*------------------------------------------------------*
[Device Reviews and Information] banch:
I tried that using Terminal Emulator but I got message java.lang.IllegalArgumentException: Unknown package: com.adupts.fota

Then I tried to use 3C.Toolbox and tried to freeze the com.adupts.fota but still the device crashes!
[Device Reviews and Information] amg314:
3C ToolBox --> App Mgr --> System --> Search (Loupe in upper right corner) --> fota

give us in a result screen like the following: (see screenshot).

One can see blue cubes near both fota apps. It mean that theese 2 apps are frozen.

Frozen applications are unlikely to cause a crash in the system.

In a pinch, you can delete them (at your own risk). For this, see the following:

BEWARE: com.adups.fota.MyApplication spyware on your elephones! by Doge199

https://xdaforums.com/elephone-s8/how-to/beware-com-adups-fota-myapplication-t3741622
[Device Reviews and Information] superdragonpt:
Hi guys

Looking for a cheap tablet to play around

What are your inputs on this one?

Any kernel source?

Cheers
[Device Reviews and Information] amg314:
To superdagonpt

==============

Try to buy (if you are lucky))
[Device Reviews and Information] Palm Trees:
Seems like Chuwi is opening up for working with developers: https://tabletmonkeys.com/chuwi-invites-chuwi-tablet-owners-as-developers/
[Device Reviews and Information] rippledrums:
Hello,

I have a big problem with my less than 1 month old Chuwi Hi9 Air...

The first thing I did was backup nvram and nvdata following the guides from this thread.

I decrypted and rooted it successfully with TWRP and the guides from this thread and everything was working fine for some time.

I then had the brilliant idea of trying out a particular substratum theme which led to a System UI crash. After that crash I tried booting into TWRP to delete the overlay apks, but then my tablet got stuck booting into TWRP.

After that I used SP Flash Tool with "Download Only" to reflash the firmware and the device booted still OEM unlocked. I flashed TWRP again and right after flashing TWRP it got stuck booting into it every time, never booting to Android.

Since I thought the previous flash didn't go 100% well because of the device still being unlocked, I flashed a second time but this time with "Format All + Download". The tablet booted, not OEM unlocked anymore but the tablet didn't detect the SIM card.

So now I noticed I've lost both IMEI numbers, the tablet's serial number, and I'm pretty sure the WIFI MAC address isn't the one that was there when I received the tablet.

(I think) I've tried everything, SP Flash Tool, Maui Meta, SN Writer and I can't seem to recover the IMEI numbers or anything, even from the backups I made before doing anything to the tablet.

The weird thing is, when I read the data from the tablet with Maui Meta, it reads the correct serial number and IMEI numbers, but Android can't read them!

I'm at a loss here, can someone help or should I contact the seller and try to get some kind of warranty?

:(
[Device Reviews and Information] amg314:
To change IMEI, serial number and WiFi MAC address you may use SN Write Tool:

https://snwritetool.com/category/download

https://androidmtk.com/use-sn-write-tool

Theese two files from your ROM will be needed:

MDDB_InfoCustomAppSrcP_MT6797_S00_MOLY_LR11_W1630_MD_MP_V67_2_1_ulwctg_n.EDB

APDB_MT6797_S01_alps-trunk-o0.tk_W17.45.

*------------------------------------------------------*

Please tell me what are the advantages of a permanent WiFi MAC address?

I beleive that jumping MAC is a feature nor a bug) This makes more difficult monitoring you in public networks.
[Device Reviews and Information] rippledrums:
I had already tried SN Writer with no success.

So what I did was:

- flash latest firmware again with "Format All + Download" option

- tablet finally booted with baseband information and when I checked the IMEI numbers it had some random ones

- then I used SN Writer to flash the correct serial number and IMEI numbers

- and I have my tablet working again with my SIM card! :D

The WiFi MAC doesn't seem permanent but it's back to 00:08:xx:xx:xx:xx like when I got the tablet. As long as WiFi works I don't care if the MAC address is permanent or not.

Thank you so much for making me try again to rescue my tablet! :good: :highfive:
[Device Reviews and Information] abdulhamid1978:
Without rooting the tablet is there an easy way to backup IMEI, serial number and WiFi MAC address?
[Device Reviews and Information] amg314:
Both IMEI numbers are attached to your Chuwi documentation (look inside your tablet's box).

Therefore, I do not understand your desire to backup these numbers.

May be you need change IMEI, Serial Number and MAC?

In addition to the program that I referred to in my last message, I will provide a link to another tool.

Maui Meta 3G/4G Repair Tool

https://allmobitools.com/download-maui-meta-3g-4g-imei-repair-tool/

Both these programs work on 'Power Off' devices, and IMO they do not require root access.

However, any change to nvram is potentially dangerous. Be careful!

After editing nvram you need do wipe data/factory reset((

Otherwise, the tablet will load old IMEI from the nvram folder.
[Device Reviews and Information] corleone48:
Hello,

trying to install twrp, I erase all data on my tab.

I can't reach to install with the special tools.

Is it possibel to install rom with TWRP ? what kind of rom ?

Thanks for helping me !!!
[Device Reviews and Information] Minotavrs:
1. Install twrp via Flashtool and MT6797_Android_scatter.bin from 1st post

WRP 3.2.2-0 brief installation guide for the CHUWI Hi9 Air (Hi9Air)

## Developed and Written by Alberto96 (GearLabs) ####

NOTE: For those who want to keep the bootloader locked, follow the SP Flash Tool guide.

Flashing via SP Flash Tool (noob-friendly):

1) Download the latest SP Flash Tool software for your preferred OS (Windows/Linux)

2) Proceed as shown in my guide linked here: https://docs.google.com/presentation/d/1NJcDBkLk8zMwyv2BTqRjn2NB_ZOWKjP1fRpSVr44Oxk/edit

Flashing via Fastboot (minor skills required):

WARNING: If your bootloader is not unlocked already, then it is time to do it otherwise you won't be able to flash any custom binary. DO NOT untick the "OEM Unlock" option in the "Developer Options" menu after having flashed the custom recovery.

1) Reboot into fastboot mode (using the Volume Up + Power keys combo or just by executing "adb reboot bootloader" via ADB or a Terminal on the device)

2) Execute this command: "fastboot flash recovery recovery.img"

3) Now you can reboot the device by executing "fastboot reboot" or by long-pressing the power button for a while

IMPORTANT: Be sure to root your device using Magisk (recommended for SafetyNet) or SuperSU (classic and permanent) right after having installed the custom recovery (before even rebooting into Android!) otherwise, as a security feature, Android will overwrite it with the Stock Recovery thus you will have to repeat the procedure. DO NOT blame the recovery for this since you have been warned.

// Any procedure shown here has been tested but, obviously, you do it at your own risk. If you don't mess with anything indicated above, the chance to run into issues is almost inexistent. Good luck! //

2. After this make Root via installing magisk.zip [via twrp] from recovery mode [Power & + volume]

3. DO NOT FLASH CUSTOM ROM from TWRP.... only via SP Flash Tool
[Device Reviews and Information] corleone48:
Thanks a lot for your help.

For now, I only have TWRP installed, and I can't boot on system.

I don't know if it erased or if I just bug the boot.img

I try to install the original ROM true SP flash tool but when I arrived a the step to connect the powered off tab, it won't happened anything, nothing is installing.

What can I do?
[Device Reviews and Information] Minotavrs:
OK no prob... try this

1. Download this stock [from 1st post] Stock Rom Build number O00623 release-keys 20181122

2. Open SP_Flash_Tool_v5.1728.00.000 [download it from 1st post]

3. Use the attached scatter.txt file

3b. use the MTK_AllInOne_DA.bin[1st post]

4. Press Download button

5. Connect your Chuwi to your windows machine at power on mode [in twrp in ur case]

6. Press with a needle the reset button near the volume down key

7. Wait 3 seconds until you see SP Flash Tool to connect it and downloading the stock rom...

8. Wait it until you see the verification message of Download Complete

9. Disconnect chuwi usb cable from windows machine

10. press Power on to boot your device
[Device Reviews and Information] corleone48:
Thanks a lot !!!

I've try numerous time, but the only pb was, that I've to disable MTP to allowed the connexion !!

THKS !!
[Device Reviews and Information] jhs39:
I'm disappointed with this tablet. I did try the Gearlabs ROM but the color of photos in Google Photos seemed really off and it felt less smooth than stock.

But stock is so poorly programmed the UI feels significantly less smooth than my Fire 10 HD tablet which has less processing power and less ram.

The HI9 almost seems to be in permanent power saving mode if you aren't playing games--the OS doesn't use enough processing power to provide a smooth UI during normal tasks.

If anyone is considering this tablet I would really think twice.
[Device Reviews and Information] banch:
You are not definitely the only one who's disappointed on this tablet. From normal ROMS every single one keeps crashing my device and when I finally get LineageOS 15.1 in it does this funky screen scrolling which goes vice verse to that what I try to do! I made short video of it to show the problem.

[youtube]qzsutyIN-FI[/youtube]

Check that it and you'll seee

PS. I think I could became a fan again if I just would get past this problem. Can't go back to stock ROM as they crash every hour atleast
[Device Reviews and Information] medvedmishka:
Hello, tell me how to put android 5-6, maybe with a redmi note 4 mtk? I need stable operation of xposed modules.
[Device Reviews and Information] banch:
I flashed now the newest ROM from Chuwi 20181122 and flashing went well, let's see does the crashing begin again, if it does shall I install LineageOS V01 or 02 at first?
[Device Reviews and Information] cherkassy:
hi. looks i have the same buggy tablet.

stock ver 20181122 - crashes a lot. Gear build is better, but not enough fo comfortable use.

tried lineage - got circle boot.
[Device Reviews and Information] amg314:
I sympathize with you in your problems with random reboots.

However, the reason for these reboots is not clear due to lack of information.

IMO, there are three possible causes of a spontaneous reboot.

1. Serious hardware bugs - defective components or bad assembly.

Only one way out - a complaint to the seller with claims for damages.

IMO, this is unlikely reason, because on Lineage OS your tablet is more stable.

2. Critical software bugs.

My tablet works stably on the June and August firmware, therefore, there are no critical errors in the OS.

3. Combination of non-critical software and hardware bugs.

IMO, the most likely scenario.

To determine the causes of failures in this case bugs reports are needed. In the case of a random reboot, it is better to get logs using adb. See URL's on the matter below.

*------------------------------------------------------*

How can I view and examine the Android log?

https://android.stackexchange.com/questions/14430/how-can-i-view-and-examine-the-android-log#14431

Including useful inner references.

*------------------------------------------------------*

Logcat command-line tool

https://developer.android.com/studio/command-line/logcat

*------------------------------------------------------*

Capture and read bug reports

https://developer.android.com/studio/debug/bug-report

*------------------------------------------------------*

By the way, “a big information ball, from logcat to dumpstate”:

adb bugreport > bugreport.txt

may be the most important argument in a dispute with the seller))
[Device Reviews and Information] jhs39:
Maybe there's a language issue here but the reason you are ruling out serious hardware failure makes no sense.

This is a cheap poorly made tablet and there are multiple people in these threads reporting instability, random reboots and crashes. There are also multiple reports in this thread that it happens whether stock, LOS, or the Gear ROM is being run.

That tells me that Chuwi has very poor quality control and that many of these units have hardware defects. The behavior described can be caused by defective RAM, CPU, storage, power supply, motherboard or by faulty connections. If it was a software defect the behavior would be experienced by everyone running the software which is not happening. The same exact behavior also would not be seen across multiple ROMs.

The tablets experiencing random reboots and crashes have hardware defects. There is no other explanation that fits the facts.

If the tablet is under warranty return it for a refund or replacement. Taking bug reports is a waste of time.
[Device Reviews and Information] amg314:
This thread discusses cheap poor-quality Chinese tablets, mostly bought from Chinese stores. This automatically means poor to zero level of after sales support.

I am sure that there is no Chuwi or GearBest guarantee on my tablet in the usual sense of the term.

Judging by the steady tone of your message, you bought your Chuwi in a reputable store and are confident in after sales service. I wish you luck!

However, I really hope that the less fortunate owners of Chuwi tablets can use the links from my last post))
[Device Reviews and Information] jhs39:
Chuwi tablets are also sold in the USA at least on Amazon (which is where I bought mine). They have a US warranty and are shipped out by Amazon rather than third party sellers so they are subject to the same return policies as anything else you buy directly from Amazon.

I realize that this is a low end tablet but that doesn't make it any less pointless to pretend that hardware problems are something else.

Anybody who has read through this thread and is familiar with Android phones should find it obvious that what at least some owners are describing is not software related.

I don't think anybody who has been experiencing problems with frequent random reboots or crashes has actually been able to eliminate the problem via factory reset, flashing a different ROM or submitting crash reports. The problems always persist through every reasonable troubleshooting step which means hardware.

The issue also seems to present itself very quickly if the owner has an affected tablet which is another obvious clue that the tablet has a hardware problem since the OS isn't causing similar issues for the vast majority of owners.

I'm disappointed with this tablet and think the software could be greatly improved but I am having zero problems with random reboots or crashes.