yashsingh1/xdaforums huggingface dataset:
[Device Reviews and Information] amg314:
You need decryption script instead of TWRP update))

Try https://xdaforums.com/android/software/universal-dm-verity-forceencrypt-t3817389 for instanse
[Device Reviews and Information] thecoolkid:
I'm already using one, but having decrypted storage is a security concern. I hoped it could be fixed with time.
[Device Reviews and Information] amg314:
IMO, these are vain expectations. The vendor will never decrypt the data partition in the future.

So you should make decoding yourself((

Or use firmware 0604, in which there was no encryption.
[Device Reviews and Information] thecoolkid:
I want it to be encrypted, but I want the recovery to be able to decrypt it too. No expectations, just hope.
[Device Reviews and Information] amg314:
To decrypt, you need the vendor's password ((

Since you do not have this pass, the only way is to remove encryption using special methods. I mentioned one of them in my previous post.

The irony is that you need only to change one word 'forceencrypt' in fstab.mt6797 file((

But you need to make this change in such a way that it will remain after the next reboot.
[Device Reviews and Information] thecoolkid:
Storage should usually be encrypted with a pattern I have, but TWRP needs to support that. I already have decrypted storage, that's not what I'm interested in so quit bringing it up. ?
[Device Reviews and Information] galinha:
Who can point me to a link with a LineageOS 15.1 GSI (Treble) rom ready to flash tool.

I manage to install GearLabs GMS mas give me problems in the playtore updates and netfilx image

Thanks in advance
[Device Reviews and Information] NikosD:
So, I'm a little bit confused.

Is this a new behavior of a new firmware or a new behavior of a new TWRP version ?

Because I think I have read somewhere that TWRP version <3.2 didn't have that behavior.

I think he is looking for a new TWRP version behaving like the firmware itself, meaning to decrypt the data but keeping them encrypted.

Not to disable encryption altogether.

What about older versions of TWRP as I wrote just above ?
[Device Reviews and Information] amg314:
IMO, any version of TWRP or any other software can not decrypt the data area encrypted by the vendor.

But, you can remove encryption without knowing the vendor password.

It's like in Windows - there is no way to extract a password from the OS storage, but you can reset it to an empty password using DaRT (Diagnostics and Recovery Toolset).
[Device Reviews and Information] Gumka1977:
4pda.ru - TWRP 3.2.3 https://yadi.sk/d/D8mEly2YhWNJeQ
[Device Reviews and Information] Alderat:
Miracast support.

Hello,

Firstable, thanks for your work. It's awesome.

Has this rom miracast support? I'm not able to activate wireless screen. Any ideas?

Thank you in advance.
[Device Reviews and Information] rippledrums:
The stock firmware doesn't have Miracast support, I tried with my sister's Sony TV and couldn't get it to work.

GearLabs ROM won't have it either since it's slightly modified stock.

Don't know about the treble GSIs though but I have my doubts.
[Device Reviews and Information] amg314:
The battery charging subsystem is probably the weakest element of our tablet.

Let me share my observations on this issue.

1. Cables and connectors are considered the unreliable elements of any electronic circuit. Micro USB connector is the bottle neck of the charging cable. That is why I connect the micro USB to the tablet first, and only then I insert the cable into the power supply. I disconnect the cable in the reverse order.

The same way I connect cable while flashing the tablet using SP Flash Tool.

2. I use a USB tester to independently monitor the amperage while charging the battery. The tester allowed me to notice the difference in the behavior of the charging subsystem on turned on and turned off tablet. On the turned off tablet, the charging current is sometimes cut off at around 98-99%. But after turning the tablet on (without disconnecting the cable), the charging current increases to about 0.2A and in a few minutes my battery became fully charged.

3. To reduce buttons clicks in more than two times I use following two tiny applications (root is needed).

a. Soft Lock Screen (diewland.screen.off 0.12MB https://soft-lock-screen.ru.uptodown.com/android )

It doubly decrease Power Button clicks (Button is used for switch screen ON only)

b. Reboot Manager (Reboot, Hot reboot, Reboot recovery, Reboot Bootloader, Power Off - 32,54 KB see attachement)
[Device Reviews and Information] Gumka1977:
My tablet is fully charged for about four hours. I use 'Accu battery' to control. I think it's a cool charging time and... You must tray 'Xposed' and 'Gravity box' !! Is amazing :)
[Device Reviews and Information] MiSSigNNo:
Edited message

---------- Post added at 04:19 PM ---------- Previous post was at 04:17 PM ----------

I'm trying to port this TWRP version to similar Hipad and I have two questions:

1. Could you please send me the twrp.fstab and recovery.fstab you were using to help me compile this TWRP?

2. Where you able to introduce /data decrypt during TWRP boot? In case you could, can you explain me how?

Found the source tree without sucess, even for the Hi9 pro that shares the same X27 processor. Don't know what's going on with hipad :(

Thanks
[Device Reviews and Information] amg314:
IMO, a useful application, thanks for sharing))

https://play.google.com/store/apps/...pro&pcampaignid=APPU_1_U9-MXJvdHeqkrgSpiKrACA

Pros: Capacity measuring in mAh (show value near annonsed level of 8000 mAh)

Reccomends 80% charging limit to prolong battery life))

Cons: does not measure wattage Wh - which is the most objective characteristic of the battery. mAh objectively describes the capacity at constant voltage only, for example, in a lead car battery. As for lithium battery, the voltage varies in a fairly wide range of 3-4.2 V, and mAh does not accurately characterize the battery.
[Device Reviews and Information] ULAMSS5:
I just flashed Alberto96's LineageOS v0.2, is it normal for the first boot to take forever? Mine has been showing the animation of a blue curve and a blue ball going from right to left for about half an hour... I'm using the new x23 model.

I have tried:

1. power off and restart, didn't work, still gets stuck

2. reboot to bootloader and run flash_all.bat again, didn't work, still gets stuck

Also, does anyone have the official stock rom for the X23 version? I previously flashed one for the x20 model in OP and it works fine, but I'm not sure if that's the best base for further modding.

---------- Post added at 12:36 PM ---------- Previous post was at 12:33 PM ----------

Can you please explain step 3?

I previously tried to flash this way, but TWRP doesn't show any content in internal storage, /sdcard etc. Did you flash the "Disable_DM-Verity_ForceEncrypt_..." file through ADB sideload? And how did you flash MAGISK and ROM? Through Sideload or TWRP or SP Flash?

EDIT: Latest update:

Also tried Alberto96's GearLabs ROM (v3 20180917), via adb and fastboot, ended in a bootloop at the Chuwi splash screen. Will try Philomene's full procedure below next :)
[Device Reviews and Information] Philomene:
Flash all with TWRP

Flash Disable_DM-Verity_ForceEncrypt

Format data

Factory reset

Flash rom treble with USB OTG or sd card

then Flash 8.0 Magisk

reboot system

thats all...
[Device Reviews and Information] ULAMSS5:
Did not work :'(

Was stuck in boot for 10 minutes, then got kicked out and rebooted into recovery, unable to boot back into system again.

I've been using Stock Rom Build number O00623 release-keys 20181122 in the OP as my base to flash back to each time it fails, showing a June 5 2018 security level.

Is that the latest one? I did not back up my original T_T
[Device Reviews and Information] xygn:
i found this tweak in the russian 4pda forums, use at your own risk, credit goes to user "Ched666"

https://4pda.ru/forum/index.php?showtopic=907162&view=findpost&p=81724984

the translation gives good description:

what the script modifies:

@echo.>> init.rc
@echo #start666mod>> init.rc
@echo on property:sys.boot_completed=1 >> init.rc
@echo setprop ro.mtk_perfservice_support "0">> init.rc
@echo write /proc/ppm/mode "Performance">> init.rc
@echo chmod 0444 /proc/ppm/mode>> init.rc
@echo write /proc/ppm/policy/hica_power_state "3">> init.rc
@echo chmod 0444 /proc/ppm/policy/hica_power_state>> init.rc
@echo write /proc/gpufreq/gpufreq_input_boost "0">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_input_boost>> init.rc
@echo write /proc/gpufreq/gpufreq_limited_low_batt_volt_ignore "1">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_limited_low_batt_volt_ignore>> init.rc
@echo write /proc/gpufreq/gpufreq_limited_low_batt_volume_ignore "1">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_limited_low_batt_volume_ignore>> init.rc
@echo write /proc/gpufreq/gpufreq_limited_oc_ignore "1">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_limited_oc_ignore>> init.rc
@echo write /proc/gpufreq/gpufreq_limited_pbm_ignore "1">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_limited_pbm_ignore>> init.rc
@echo write /proc/gpufreq/gpufreq_limited_thermal_ignore "1">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_limited_thermal_ignore>> init.rc
@echo write /proc/gpufreq/gpufreq_opp_freq "780000">> init.rc
@echo write /proc/gpufreq/gpufreq_opp_freq "875000">> init.rc
@echo chmod 0444 /proc/gpufreq/gpufreq_opp_freq>> init.rc
@echo #end666mod>> init.rc

download:

http://s000.tinyupload.com/?file_id=46681821514344328785

edit1: so i just flashed it on my alldocube m5xs, and animations/scrolling are smoother, touch response seems faster too!

the tweak seems to keep 1 additional core online in the mid cluster, so battery should be worse, will test more.

edit2: so that config is pretty awesomely smooth/responsive, but battery drain is a bit higher, i still value battery life, so i reverted to default power state and idles on 1 core for power savings, in terminal/su:

echo -1 > /proc/ppm/policy/hica_power_state

downclocked the gpu a bit for more power savings:

echo 520000 > /proc/gpufreq/gpufreq_opp_freq

there is also command to unlock frequency on big cores(was capped at 1.5ghz), good for loading websites but will overheat/drain battery if persistent heavy load:

echo 0 > /proc/ppm/policy/hica_is_limit_big_freq

after tweak Mozilla kraken benchmark faster from ~6000ms to 3600ms, CPU temp spike to 90c during test.

edit3: forgot to add

chmod 0444 /proc/ppm/policy/hica_is_limit_big_freq

to make the setting stick, be careful with this one though because it will cause overheating if those big cores stay on under persistent load, like running a benchmark. under normal use it will spike to ~60-70c but that is acceptable if for burst tasks and it makes things load faster.
[Device Reviews and Information] cragrel:
can anyone help...my hi9 air keep boot loop back to twrp recovery, happen after i installed viper and ainur magisk sound module.

tried to flash using flashtool and fastboot not working too.

on gearlab rom and 3.2.2 twrp.

anyway to hard reset to stock, reflash rom or i have brick my hi9 air?

thanks for the advice in advance
[Device Reviews and Information] amg314:
A brick is if:

1. Device does not turn on;

2. Device does not react to anything;

3. Device show nothing on a screen.

And you have a bootloop in TWRP.

Restore the system from Nandroid Backup, which you prudently did for such a case.
[Device Reviews and Information] rippledrums:
I had that exact same issue and almost killed my tablet trying to recover. Whatever you do don't format all in SP Flash Tool.
[Device Reviews and Information] Mayex:
Is this a good tablet for reading internet and pdf, or watching youtube and stuff for 150$ on promo? I'm tired of looking for good tablet. But I also love to have xda support for my device and roms to flash. Is it going to get Pie in 2019?
[Device Reviews and Information] User22:
Hi guys,

I am posting here because no one answer me on Hi9 Plus forum... perhaps here i will get some more help.

I lost my Android serial number and IMEIs after installing TWRP ... using Maui i been able to rewrite the IMEIs to the numbers that are on the box, but the Android serial number i don't know what i have to type in.

Could you please check your Chuwi serial number on the box and compare it with the one that is on your tablet to see what it is.
[Device Reviews and Information] amg314:
On Chuwi Hi9 Air serial No is printed on tablet case under SIM cards cover. No is started with Q64G.
[Device Reviews and Information] User22:
Thanks for your answer, i have that number printed on the box, but nothing on the tablet, only "unknown", and i want to know what i should type in because if i put that serial number, what i obtain is a 10 digits number with letters and numbers
[Device Reviews and Information] amg314:
My tablet has a 16 signs serial number. This number starts with the Q64G prefix followed by the 12 digit code.
[Device Reviews and Information] User22:
I have the same, but what i am talking about is inside the "settings" / "state of Hi9" / imeis, serial number
[Device Reviews and Information] amg314:
As I understand, you want to embed the serial number into the ROM.

Look at:

[ROOT] Android ID Changer

https://4pda.ru/forum/lofiversion/index.php?t543250-20.html

You can also try following method:

https://4pda.ru/forum/index.php?showtopic=907162&st=660#entry796658044
[Device Reviews and Information] Yannn:
Hi everybody,

I know the question have been send in the past (previus pages) but since for a long time ago :

Does it exist a stypus compatible with hi9 air ?

best regards
[Device Reviews and Information] User22:
Ok i will have a look. Thanks
[Device Reviews and Information] ULAMSS5:
I contacted Chuwi and they confirmed that the X23 version uses the exact same firmware as the original X20 version.

However, I'm still completely unable to flash to any ROMs. They all bootloop into twrp, or gets stuck in loading animation. I've tried pretty much every ROM mentioned in this thread.

Can anyone please confirm if there is a stock ROM with August 2018 security patch level? Some ROMs have referenced this as the latest, but the latest in the OP, marked 20181122, gives a June 2018 security patch level.
[Device Reviews and Information] uncleabubear:
To flash roms you need stock recovery.

Chuwi has promised android 9 which will obviously update security patches.
[Device Reviews and Information] kirk8:
I'm back! So I guess i coukd soend some time trying to fix this freezing issue myself,

Things that I think may be causing this

High CPU temps

Faulty battery, can't keep up with power

Electrical shorts

Firmware

Going to try the script in the 4pda forums I'll see how it affects the freezing if at all
[Device Reviews and Information] xygn:
anybody with root can check if these files/folders exist:

/sys/bus/i2c/drivers/gsl3680

/proc/gsl_config

on my alldocube m5xs these exist, first one is the model of the touchscreen and the second file is empty, but might be able to be used to increase sample rate of touchscreen(mine is ~50hz):

https://4pda.ru/forum/index.php?s=&showtopic=583114&view=findpost&p=79798865

edit: hmm seems hard not sure which section is the firmware in the kernel, also some websites say there is checksum on the firmware so can't be easily modified.
[Device Reviews and Information] amg314:
gsl3680 is a directory:

$ tsu

# cd /sys/bus/i2c/drivers/gsl3680

# ls

0-0040 4-005d bind uevent unbind

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

# cd /proc

# ls | grep gsl

gsl_config

gsl_config
[Device Reviews and Information] galinha:
Part sim cover

Hello

Where can i find the sims cover to buy .

Mine is broken

Please see attached.
[Device Reviews and Information] amg314:
As one can see, damage is not very big)))

1. Try to repair damaged area

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

a) Place a piece of thin plastic tape on the inside of the lid and tape it over with an adhesive tape.

b) Prepare some epoxy glue and mix it with black fine powder (such as printer toner).

Seal the defect with a thin layer of black glue.

c) After drying, remove excess glue using Dremel with an abrasive nozzle.

d) Remove the plastic lining.

2. Print_It!

=========

Make a model of a broken cover in a 3D program.

https://all3dp.com/1/best-3d-slicer-software-3d-printer/

Print the cover on a 3D printer.
[Device Reviews and Information] techdimi:
Hey guys, sorry if my question has been answered in the past but I have done some reasearch on this tablet, looked at some reviews and the only problem that bothers me is the screen brightness which is not that good. I live in a sunny place so I do not want to regret buying this tablet. I have read that the screen is downgraded to somehow lower than the max capable brightness of the panel from the factory in order to increase the overall battery performance.

My question is if this is really true and if it has been fixed since release date with an update or with a custom image.

This is going to be my first tablet so I want it to be good! Thank you and keep up the good work!
[Device Reviews and Information] amg314:
As for me, the screen is pretty bright. In addition, you can adjust the brightness through Settings -> Display -> Brightness.

Although I did not use the tablet on the beach)))

But wait for other members opinion on the matter before buying the tablet.
[Device Reviews and Information] tminus3:
Hi guys,

Received my Hi9 Air today. After setting it up (copy over apps etc from my old Pipo P9 via Google cloud) it now asks me for a PIN code. I haven't set one up, the obvious 0000 and 1234 don't work.

Anyone now how to fix this? I was hoping to have a usable tablet to take take with me for a weekend away.
[Device Reviews and Information] uncleabubear:
If you can't log in your only option is to flash it with the latest build using sp flash. Instructions are in the first post.

If you have access try a factory reset.

A.
[Device Reviews and Information] FrenchSparda:
I'll try to flash the lastest GSI Blissrom next week, and will report asap ;)
[Device Reviews and Information] uncleabubear:
ONLY for Gearlabs Rom v.3

Magisk v.18.1 patched_boot.img

fastboot flash boot patched_boot.img
[Device Reviews and Information] FrenchSparda:
So no luck installing GSI Blissrom...after flashing image in TWRP, when i'm rebooting tablet, it enters fastboot mode...

Here's what i did :

1- back to stock

2- flashing TWRP

3- Format data

4-reboot recovery

5- Flashing DisablingEncryption zip file

6- wiping system, data, cache

7- flashing Blissrom .img file (A partition only)

8- reboot

9- rebooted in fastboot mode

I'll try something else tomorrow
[Device Reviews and Information] uncleabubear:
Did you try the instructions of how to install gsi ROMs in post #2? I think you need stock recovery to install rom first.
[Device Reviews and Information] xygn:
so doing some browser testing, tested kraken benchmark before and after unlocking frequency on big cores on several browsers, in milliseconds(lower is better):

chrome ~7000/~4000

kiwi ~6000/~3600

samsung ~5000/~2700

stock ~3000/~3000

it appears for this benchmark at least, samsung browser performs best, chrome worst, stock browser is doing something fishy.

in my testing samsung browser > kiwi > stock, test using the mobile reddit website, chrome is uninstalled ;)
[Device Reviews and Information] chemeleon:
I'm getting some weird issues booting with my Hi9 Air.

Often, on reboot, generally after a system modification but not always, a normal system boot fails and I end up in fastboot mode at least once, usually two or three times after rebooting before booing successfully into the system. This seems to happen less with stock rom but still occurs. I was running the latest firmware from the CHUWI website.

I'm currently running phh-treble's Android 8.1 GSI (9 seems buggy and unstable), and have Magisk installed. CTSprofile is false, so I installed a module to edit build.prop, but that seems to keep me in a bootloop. I imagine it's modifications to the boot script that are triggering fastboot (and in Magisk's case, the bootloop) but I don't have many ideas. I'm using alberto's TWRP 3.2.2.1 (which I can only find on the official CHUWI forums). Could TWRP be the problem (I noticed that version 3.2.2.0 at least is based on the August firmware which is earlier than the most current, not sure if 3.2.2.1 is based on a later one)?
[Device Reviews and Information] tminus3:
After determining BangGood is no help regarding my tablet, I tried to flash the latest official rom using the instructions provided in the first post.

Unfortunately I'm getting an error message a few seconds after pressing the download button and plugging in my powered of Chuwi.:

Error: Status_SEC_DL_Forbidden

Anyone that can help me out here? Any help much appreciated.
[Device Reviews and Information] Gumka1977:
You must have MTK drivers installed !!

Wysłane z mojego Mi A2 Lite przy użyciu Tapatalka
[Device Reviews and Information] tminus3:
I have installed the MTK drivers per instructions in the first post (Download and extract flashtool and install mtk driver) including disabling driver signature enforcement.

I'll try flashing the tablet from an older Windows 7 PC later today. That has worked in the past.
[Device Reviews and Information] amg314:
Test your USB drivers for SP Flash Tool:

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

Open Windows Device Manager and connect tablet to PC.

You should see (for 2 sec only) MediaTek Preloader USB VCOM Port, or MTK USB port in Ports.

If you do not see the appearance of the specified ports for a short time, the SPFT USB configuration is not fully performed.

In this case read 'How to install USB drivers for SP Flash Tool' (in russian, but fully illustrated)

http://4pda.ru/forum/index.php?showtopic=469340&view=findpost&p=46439587&anchor=Spoil-46439587-1
[Device Reviews and Information] tminus3:
Thanks for the reply,

When plugged in I get the 'MediaTek Preloader USB VCOM Port' in device manager for a few seconds, then the listing refreshes and it is gone, refreshes again a few seconds later with a 'MTP USB Device' listed in Portable Devices.

But I still get the error message when trying to flash.
[Device Reviews and Information] amg314:
Sequence:

0. Expel your cat to another room.

1. Switch your tablet off

2. Plug microUSB to your tablet

3. Run SPFT, point to your scatter.txt file and check *.img you need to flash

4. Press Download button on SPFT

5. Plug USB plug to your PC slot

6. Wait for green OK! tick))

PS Do not flash preloader.img without extreme necessity.
[Device Reviews and Information] tminus3:
Thanks for the advice. Tablet is installing now (Google cloud installation from my old Pipo P9 tablet). Flashing went without a hitch after I selected to correct DA file in the flash tool (Doh.....).

Lets see if it will setup without problems and

if I'll be able to give it a test drive tonight.

*edit* Played around with it tonight. Installed most of my apps. My streaming apps (eurosport player and ziggo go) are working, but game performance is lacking somewhat.

I play Skyforce Reloaded alot lately, and it feels smoother on my 4(!) year old Pipo P9 then on the Hi9 Air! Is there a way to bump the gpu performance somewhat?

Regards,

Marc
[Device Reviews and Information] chemeleon:
Poor performance is probably down to high display resolution. You can lower this system-wide with a couple of adb commands, or use a tool like Samsung Game Tuner or similar to do this on a per app basis (I haven't found one that works yet myself, and it will probably require root if there is one).

adb shell wm size 1920x1080
adb shell wm density 390