Chuwi VX8 RileyROM 1.1

[seb_131]

I tried to flash, but no progress bar ... nothing appened. And since, it is bricked and I can't do any flash because it fails systematicalmy with the error message I posted before.
When I plugged the "dead" tablet to teh PC, it is recognized during few seconds as a MTK USB Device

[Koryand'R]

I don't understand, if flashing didn't progress, why can't Android boot?

Please answer my previous question, have you tried to flash an official firmware?

[seb_131]

it is strange, but I am not the only one having this trouble, see : http://www.freaktab.com/showthread.p...l=1#post226914

To answer your question, I tried to flash the Riley ROM 1.1 from the 1st post here.

[rrileypm]

Hopefully you have read this entire thread from the beginning to find possible answers to your flashing problems.

1. Make sure your tablet is compatible with this firmware version.
2. Make sure you are using the USB cable provided with the tablet.
3. Windows 8.1 has driver issues, and flashing might not work.
4. Make sure the checksum.ini file shows the option at zero, instead of one.

[Koryand'R]

Mmmmmm maybe a driver problem.

Just to be sure, you can try to flash an official firmware, links in this russian forum like this one

[seb_131]

Hopefully you have read this entire thread from the beginning to find possible answers to your flashing problems.

1. Make sure your tablet is compatible with this firmware version.
2. Make sure you are using the USB cable provided with the tablet.
3. Windows 8.1 has driver issues, and flashing might not work.
4. Make sure the checksum.ini file shows the option at zero, instead of one.

I already checked all these points. I also tried several firm for the VX8, indluding the Russian one. Still the same 4032 error. I think this tablet has a defect since ever. I will ship back to China for replacement.
Thanks all for your messages.

[seb_131]

boot.img file to enable OTG.
Select the appropriate one (SD Card permutted with internal one, or not) and flash boot.img with SP Flash Tools.
Not tested.

http://www.4shared.com/zip/X5u8foVqba/OTG-boot_img.html

[seb_131]

I think the issue is coming from the usb mode of the tablet.
Everytime I connect th etablet to the PC, it is recognized as "MTK USB Port". I have tested many different systems, including Windows XP.
The tablet seems blocked on this mode. I have tried with or withou batery, pushing some buttons when plugging.. But still the same, no chance to switch into Preloader mode ....

MTK6218 = "MTK USB Port"
MTK_COM = "MTK USB Modem Port"
MTK_CAT = "MTK USB Debug Port"
MTK_PRELOADER = "MediaTek PreLoader USB VCOM Port"
MTK_SP_DA = "MediaTek DA USB VCOM Port"

[Koryand'R]

Sorry, my knowledge is quite limited in this case, I'm not able to help you :-(

Maybe, any chance to connect through ADB?

[duduwar]

Hey seb_131 ,
I had the same problem, tried to flash Riley's rom and the tablet went dead,
I think that the problem is with the tablet, if you shipped it back to China let us know how the new flashing progresses,

if you haven't shipped it,
I had the same problem as I mentioned ,
after I saw there's no booting\even no charging sign,
I have left it on charging almost 24 hours,
after that I tried to turn it on (don't know why) and it worked,
immediatly saw Chuwi logo and after few minutes the tablet has fully recovered.

tried to flash the rom again and it went dead again,
charged all night and it made the trick once again...

don't know why, pretty weird... try it.


BTW Rilley, thank you for the custom rom,
I truly appreciate it

UPDATE:
just downloaded firmware for Chuwi website,
after loading the scatter file to the flash tool, it shows NAND on the bottom,
on Riley's rom it shows EMMC .
anyway, original firmware was flashed successfully,
guess it is a different version of the tablet unfortunately..

(please correct me if I wrong)
thanks

[Koryand'R]

Look at your serial number, maybe your tablet is a "D series", so you can't flash Riley's rom :-(

[seb_131]

My tablet has arrived in China. No news so far about the repair.

In the meantime, I have read many forum. I have concluded that the preloader has been erased, probably because the Riley ROM is not compatible with my model.
To restore it, first it has to be recognized as USB Mtk Device. 2 solutions :
- connect to the PC with vol- pressed
- if not working, device has to be opened, batery unplugged, and test point on the motherboard connected to the ground, while usb is plugged to the PC
Then, in SPFlash tool, the good preloader (only) has to be downloaded. Then, the rest of the ROM.

When I will receive back my tablet, I will try to backup the ROM with MtkDroidTool, and I will cook my own one.

[ar_156]

Any picture or video about this ROM? pro and cons versus the stock one before I take the risks and flash it?

[frisk]

My tablet has arrived in China. No news so far about the repair.

In the meantime, I have read many forum. I have concluded that the preloader has been erased, probably because the Riley ROM is not compatible with my model.
To restore it, first it has to be recognized as USB Mtk Device. 2 solutions :
- connect to the PC with vol- pressed
- if not working, device has to be opened, batery unplugged, and test point on the motherboard connected to the ground, while usb is plugged to the PC
Then, in SPFlash tool, the good preloader (only) has to be downloaded. Then, the rest of the ROM.

When I will receive back my tablet, I will try to backup the ROM with MtkDroidTool, and I will cook my own one.

Hi seb_131,
I can confirm that the second option just saved my kid's device.
I opened it, unplugged the battery and used SPflashtool v5.1452.00.000 to upgrade firmware with official VX8_20140923 from the russian forum.
No need to connect the test point to the ground nor flash the preloader only.
Don't try to flash another recovery or the upgrade process will abort.
You can flash the recovery only, later and in download mode (I got an error at the end of the process but COT recovery is here and is working).
THANK YOU!

[Klaus69]

No updates for this pretty tablet?