Database Users

Chuwi VI8 Bricked (Blackscreen)

I have a problem, I flashed bios and now my screen is black, I can't see anything and I can't do anything... Can you help me?

Everx89 said:
I have a problem, I flashed bios and now my screen is black, I can't see anything and I can't do anything... Can you help me?
Click to expand...
Click to collapse
You may have flashed the wrong bios.
I had a black screen to, the back-light was on, but the screen was displaying nothing.
Do yo know if windows boots?
You can see that if the power led flashes green a few seconds after booting the device for windows boot, for android boot you have a sound notification from the mailbox.
If you are in that situation, you can try the following process, tell me and I will try to provide you the right links.
I had flashed the wrong bios (single OS without hdmi instead of the super vi8 bios) and had no display anymore, I had to flash again the right bios without display, only by memory.
You need a USB hub with a USB keyboard. (and another pc to get the files needed to reflash)
- I got the bios for the right version of the vi8 (look a the model number on the back of the device) on official chuwi website (in chinese but I used google chome translation)
- I put the bios on a usb key root with the Onda flash tool executable and changed the extension of the bios file from img to fd.
- I plugged the usb key in the usb hub
- I booted windows and logged in 'blindly'
- I pressed Windows key + R to execute a command and typed 'e:update.exe' to launch the flash tool on the USB key, then I heard a sound warning from the flash tool, pressed enter and let the software do its work for 5 minutes.
- I then shutted down and rebooted the tablet by long pressing the power switch.
- I had the display working back with the chuwi logo and estimated myself lucky.
Conclusion : Check the destination model of the firmware twice before flashing!

reply
hi ;
I am in the same situation could you please share with me the flash tool link.

Ok go to this post and download the joined zip : Then replace the bios with yours (file with the fd extension) change .img or .bin to .fd, if I remember well.
http://forum.xda-developers.com/showpost.php?p=59869681&postcount=3

kuroz91 said:
Ok go to this post and download the joined zip : Then replace the bios with yours (file with the fd extension) change .img or .bin to .fd, if I remember well.
http://forum.xda-developers.com/showpost.php?p=59869681&postcount=3
Click to expand...
Click to collapse
Many thankks.
it was difficult for me work under black screen but when I connect tablet to HDMI TV it can display screen
now I just need windows installation package to finish reinstallation, I found this page but it requires for baidu account to can download it
many thanks for your help.

HI, I am about the same way. (ended up bricked this way trying to clear cmos without opening it)
I have checked and my tablet is running windows for good (checked with nano HDMI cable).
backlight is on, touchscreen works, LCD is off.
I can log onto Android and windows. I have contacted Banggood ( I ordered it there) and they gave me a link to download "good" bios. I have flashed it but still the same problem.
My tablet is number q32g221509018**
The bios I tried now is CHUWI.D86JLBNR03.ROM

stripes on screen chuwi vi8 dual boot
hi i have problem i flased bios and now i have only stripes on screen how can i make it work?? thx

Chuwi vi8 stripe on black screen
Can you help me how to fix a stripe in my black screen I flash a wrong bios... Pls help me

Anonymous.Developer said:
Can you help me how to fix a stripe in my black screen I flash a wrong bios... Pls help me
Click to expand...
Click to collapse
Check out this post https://forum.xda-developers.com/android/help/unbricking-teclast-x89-kindow-t3412968/ and this outside link https://techtablets.com/forum/topic/unbrick-x98-pro-bios-usb-flash/
for information on solving a hardbrick on a tablet.
I'm currently in the process myself with my Teclast X16 Plus

Did any of you fix the hard brick?

Hey. Link is dead.
And i have problem too like you chuwi vi8 .. blackscreen..

3066 stick device stuck on bootscreen

Hello friends, i have got this Android stick its been bricked by someone, and stuck on LOGO SCREEN.
the specs are:-
Android 4.1
Rockchip RK3066 Cortex A9 Dual Core
1GB RAM
8GB Built In Memory
THANKS.

You can try to reflash with firmware of another brand, but you have 50% that wifi will start working. Depends on definite firmware. If wifi and chipset for both devices are the same you can do this. Did you try to contact producer directly?

Such_A_Victor said:
You can try to reflash with firmware of another brand, but you have 50% that wifi will start working. Depends on definite firmware. If wifi and chipset for both devices are the same you can do this. Did you try to contact producer directly?
Click to expand...
Click to collapse
Yes victor i tried different roms , but nothing seem to work, now there is only black blank sceen, i even tried erasing flash and idb reset in mask rom mode and upload all the three FW's but no luck, no menu or boot screen on the tv. The producer is not intereted in any kind of support.

Ruhanin said:
Yes victor i tried different roms like UG802, MK808, even Finlesss 1.7, but nothing seem to work, now there is only black blank sceen, i even tried erasing flash and idb reset in mask rom mode and upload all the three FW's but no luck, no menu or boot screen on the tv. The producer is not intereted in any kind of support.
Click to expand...
Click to collapse
Can you show this device, and logo screen if it's still able?

Problem with BIOS Tablet Onda v820w

I updated days ago with bad rom the Tablet Onda v820w with windows 10.
I found the correct Bios and now I have the correct file.
But now, I can´t access to windows to update the flash.
How to unbrick this tablet.
Some method to flash the bios outside windows?
The tablet power ON but screen is black, but microusb works It turns on the light of the hub that I have put
The BIOS brand is "Insyde".
If need moore details please ask me.
Very Thanks four your help.
Regards

can you access command prompt (CMD)?
or
can you access the bios and flash from there instead?
only ever flashed bios a few times (on desktop) but ive always done via the bios screens rather than in windows itself.
.

Hi
I can´t access to CMD, because the screen don´t turn on.
Only can put pendrive and Keyboard with MicroUsb hub. (This turn on the light when push the power button)
But I don´t know if tablet have some method to rescue the bios from Bad update.
Thanks

I have similar problem. Please help me anyone. I flash older bios to my v820w and i have now black lcd.
Also i unforunatelly delate windows partitions when flashing Android and now i can acces Android by HDMI output in my TV
is any way to flash bios by Android just like in x98 air 3g?

locoslaw said:
I have similar problem. Please help me anyone. I flash older bios to my v820w and i have now black lcd.
Also i unforunatelly delate windows partitions when flashing Android and now i can acces Android by HDMI output in my TV
is any way to flash bios by Android just like in x98 air 3g?
Click to expand...
Click to collapse
Hi I have the same tablet, when it works it is perfect, but the screen scrambles and the console become Un usable and freezes, i thought that it might just be windows 8.1 so I managed to put windows 10 on it last night but today it is doing the same thing. Could some one offer some advice.

Well...
Hi, I was able to fix a v975i tablet that was completly dead, because of wrong bios update, in my case i use a programmer unit and pro skills to weld. Basically you will flash the bios and download the correct bios , but i had to desolder the chip from the motherboard.

allwinner a20 android unit wing k70

Hello,
I have an android unit as;
allwinner a20 cpu, 1gb ram, 16Gb rom.
MCU>>>STM8S207___RBT6___99ODH-VG___NYS99 603
TDA7388
TEA6851
I rooted my device and with some 3rd app, booted into recovery and there is just android logo. No recovery page, then boot into android.
So i decided to upload twrp recovery.img (from one webpage) file to my unit.
I uploaded the recovery.img file with dd command from terminal emulator. Now my device is in black screen, no boot into android.
Anyone can help me? any idea what to do?
I just have update.zip file from seller company.
In dark room whan i connect the head unit to power, there is nothing on the screen. Just dark screen.
Thanks in advance.

Hello,
I tried to access to the device via ADB but i cant.
I prepared a usb male to male cable and pluged in to my laptop.
When i power on the device (connect b+, -, acc), there is no backlight of the LCD screen in dark room. Also there is no detection the device by windows.
Last time i used mobile uncle tool program to enter the recovery. The device got into dark screen and there is nothing.
I found a topic on forum. For another device someone found a way to reset the mcu, then the device boots into android.
There are some CN and JP on the mainboard. May be they are used for reset the unit. Anybody any idea?

X96max plus big broblem pls help

I flashed my x96max plus I think with wrong rom
Then it stop doing anything even the display or power, when I connect it to amlogic USB burning tool it can't recognize but after about 10 minutes it begins to recognize
I tried several versions of rom ,but not work
Could anyone help me with the right version of this bad device & what's the suitable version of burning tool
I attached pictures of all chips of the device