Hello all !
I have Dell venue 7 3740 lte and i flashed my device following the official oss_A195.pdf guide. After FW+OS Download completed step the device is not booting into fastboot mode instead its just showing blank screen after restart. I tried flashing with windows 10 and 8.1 os (Tried installing and uninstalling the drivers too) but the result is same blank screen . I have another tablet of same model and it is booting into the fastboot mode after FW+OS completed step . I am clueless about the problem please guide me to get through the problem.
Thanks in advance !!
Related
Hello, I am new to the forums and new to rooting, flashing and installing OS' and ROMs on phones.
So, I followed a tutorial from mid 2014 on PCAdvisor (I can unfortunately not share links as I am new to the forums).
I am stuck on step 7 where I have to use
Code:
adb reboot bootloader
. The phone turns of as expected, but when it turns on again, it gets stuck on the booting screen, only showing the Huawei logo.
The I did do a factory reset, and enabled USB debugging. After the first try failed, I went to the bootloader (Volume Up + Power Button) and did a factory reset from there, and tried
Code:
adb reboot bootloader
again, but without luck and still stuck in the boot screen.
I do have an average knowledge to the Ubuntu terminal on computers, and Ubuntu is what I use (and misuse) every day, so such things shouldn't be a problem.
I know the specifications of this phone aren't the recommended ones for use of Ubuntu Touch, but I still wanted to give it a try. If it bricks, I'll have an excuse to buy the Bq Aquaris E4.5 Ubuntu Edition (The cases looks so neat!).
So, with all this, has anyone managed to get past this step? Has anyone managed to install Ubuntu Touch on this model? If not, has anyone managed to install a custom ROM or something similar on this model?
Thanks in advance.
-Inuit Viking.
THANKS
Here I sit with a dell venue 8 3840 bricked, when I boot it shows the USB sign with thick bar under it. Now I tried the unbricking method found from Dell Table Flash Notes and I was able to do it all the way up to the part where you double click on the P802_flash_device_wifi_only.bat and it was unable to find the device, so I tried it again, and this time I could even use the xFSTK Downloader program it now started giving me that error windriver error 0x20000015 which it didn't used too, so now I don't know what to do.
venue 8 3480
so you know this doc right?
opensource.dell.com/releases/Venue_8_3840_Merrifield/developer-edition/Doc/OSS_A195.pdf
it looks to me that you are at page 11 step 6 and forgot to flash "droidboot.img"
6) Go to the directory contains “boot.img” and run these commands.
\> fastboot flash boot boot.img
\> fastboot flash fastboot droidboot.img
\> fastboot reboot
you can get those files from
opensource.dell.com/releases/Venue_7_3740_Merrifield/developer-edition/A195/Unbrick/
I had the same problem and got away with it
hope this helps
Trying to unbrick according to opensource.dell.com/releases/Venue_8_3840_Merrifield/developer-edition/Doc/OSS_A195.pdf
Firmware flash is done, xFSTK shows success as at the manual picture A10.
But then the device do not switch to the fastboot mode, just keeps showing black screen. Three minutes later shows the intel logo and then the empty battery sign, at this time it dissappears from the computer device manager (was shown as Merrified), then the device loops showing the the empty battery sign.
Any advice?
so my stock dell venue 8 3840 would just load into a black screen, so I decided to follow the instructions aOSS_A195.pdf (can't submit links) to attempt to unbrick it
Starting from step A. Flash A195 image to the tablet I was doing quite well A.12 Double click file “P802_flash_device_wifi_only.bat” or “P802_flash_device_lte.bat” in SW image folder. The following CMD window will show up, and begin to flash OS system image. At this step the Cmd couldn't find the tablet so after several attempts to fix it and failed attempts at googling the problem I made the poor decision to skip this step and go to.
Step: B. Rooting and bootloader unlocking process using OTA package this step was going fairly well up to 5) Select recovery (3rd item from list), and use volume down button to navigate to it and select it by pressing power button. Upon clicking recovery the screen showed nothing but the usb symbol restarted several times and it would only go to the usb symbol no more bios menu or anything.
So I'm starting to panic a little at this point so I decide ok let me start back over at step A. Flash A195 image to the tablet. Ok good I have the bios menu back maybe I can get to the recovery screen from this one... Nope permanent usb screen again ****... Ok no problem I'll just go back to step A. Flash A195 image to the tablet and it will fix it again.... Nope permanent usb screen that I can't get to go away this time. So no what am I screwed can it be fixed?
I do not particular care about rooting it I just want it to function stock would be fine with me. Any help will be greatly appreciated.
Update after several more redos of step " A. Flash A195 image to the tablet" I finally got it to stop showing the USB and go back to the droidboot screen. I'm afraid to try to access recovery again in fear that I will once again get stuck with the eternal usb symbol. So please advise me on the best course of action I should take from here.
http://opensource.dell.com/releases/Venue_8_3840_Merrifield/
before do step A12, copy 4file( adb.exe fastboot.exe adbwinapi.dll adbwinusbapi.dll) ( http://opensource.dell.com/releases/Venue_8_3840_Merrifield/developer-edition/FlashTool/fastboot/ ) and paste into the extracted image folder, after this, run the .bat file
thanks huynhlam, that got me a little further with step a12. Now I've run into a new issue though. Just get waiting for device. I've tried reinstalling all the drivers but it seems to only be detected properly when its off.
When its on the driver has a explanation mark next to it and it says "Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)".
From my understanding it needs to be on during step a12 but I can't get it to do anything other then waiting for device at the moment any advice?
i'm done with windows 7 x64 , if you are runing on higher windows version eg : windws8 ,i hear something about install the driver ... like this http://forum.xda-developers.com/showpost.php?p=62068965&postcount=2 or google eg : https://learn.sparkfun.com/tutorial...abling-signed-driver-enforcement-on-windows-8
Also on windows 7 64x
maybe your driver issue, try uninstall driver, disable driver signature and re install driver.
Hi All,
Just rooted the android portion of this dual boot device but upon booting to the window os I was presented with a blue screen, a sad face and text
"your pc ran into a problem and needs to restart. We'll restart it for you.
...error: Inaccessible Boot Device"
Anyone come across this before and able to fix it?
upon reboot it does go into a repair mode but have tried everything but still cannot get it to go into windows.
Any help appreciated.
Should I reinstall the windows partition. A link to good online tutorial would be great?
Thanks
I rebooted device into fastboot and flashed stock rom .
On the screen appeared message that flashing recovery and fastboot failed , then i selected reboot into recovery .
The device now just showing the usb logo , i tried power + vol down & vol up and it shows only the usb icon.
i also tried connection to charger and pc and the usb only shows
I searched in other threads and red dell developer pdf and all assume that you can boot into fastboot to unbrick .
IN youtube there is a way to flash dell venue 7 3740 using xFSTK-Downloader in download mode , any instructions to use this method with 3830 ?
plz help
heronewone said:
I rebooted device into fastboot and flashed stock rom .
On the screen appeared message that flashing recovery and fastboot failed , then i selected reboot into recovery .
The device now just showing the usb logo , i tried power + vol down & vol up and it shows only the usb icon.
i also tried connection to charger and pc and the usb only shows
I searched in other threads and red dell developer pdf and all assume that you can boot into fastboot to unbrick .
IN youtube there is a way to flash dell venue 7 3740 using xFSTK-Downloader in download mode , any instructions to use this method with 3830 ?
plz help
Click to expand...
Click to collapse
Fixed !!:laugh:
If any one still has this problem post here and i will help.
Yes, I have a 3830 that seems to have the same problem.
My 3830 partitions seem to be messed up. mount /cached, /data, /system fails with block device required messages. please help
heronewone said:
Fixed !!:laugh:
If any one still has this problem post here and i will help.
Click to expand...
Click to collapse
Hello. how did you fix it?