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Hi everyone - could use some help here.  I manage a large team collecting data in the field on BV8000Pros (running Android version 7.0).  When they bring devices to the office, I must connect them to a PC and download their collected data - I do this up to 30 times in a day!  Every time I connect the device, the USB connection defaults to "charge this device" and I have to do a few extra steps to get it to the "transfer files" connection type.  I am wanting to set the default USB connection to "transfer files" to save me some steps and have tried the suggestions here using Developer Mode (https://www.addictivetips.com/android/how-to-set-the-default-usb-connection-type-in-android-6-0/) but they don't seem to work on my BV8000Pros.  Even with Developer Mode on and following instructions on that link, it still defaults to "charge the device."  

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Can anyone provide some assistance?  Many thanks in advance....

Hi there! does this happen to ALL of your bv8000 pro devices? Whats the firmware version of these?

I confirm I had the same issue when I was using my bv8000pro (I am not using it the last months). I remember this issue was present no matter what ROM I had on the phone. I never found a way to fix this. Just another issue that won't be fixed...

same here

I can't reproduce such behaviour on my BV8000 Pro. I set it to be in "file transfer" mode, and it is always in such mode when i plug it on my PC.
I'd suggest you to flash your devices to the november 2017 firmware followed by a factory reset.

blackview_admin wrote:

Hi there! does this happen to ALL of your bv8000 pro devices? Whats the firmware version of these?

Firmware is BV8000Pro-Blackview-V0.1_20170803

blackview_admin wrote:

I can't reproduce such behaviour on my BV8000 Pro. I set it to be in "file transfer" mode, and it is always in such mode when i plug it on my PC.
I'd suggest you to flash your devices to the november 2017 firmware followed by a factory reset.

I'm currently using the 20170803 build.  I think I'd like to try flashing to see if it will fix the problem.  Why do you suggest november 2017 and not the latest one?  Also, I have found some tutorials about flashing (seems a bit complicated but think I can handle it?) but still not able to find the best place to get the official firmware.  Can you please point me in the right direction?
Thanks!

naturepilot wrote:

blackview_admin wrote:

I can't reproduce such behaviour on my BV8000 Pro. I set it to be in "file transfer" mode, and it is always in such mode when i plug it on my PC.
I'd suggest you to flash your devices to the november 2017 firmware followed by a factory reset.

I'm currently using the 20170803 build.  I think I'd like to try flashing to see if it will fix the problem.  Why do you suggest november 2017 and not the latest one?  Also, I have found some tutorials about flashing (seems a bit complicated but think I can handle it?) but still not able to find the best place to get the official firmware.  Can you please point me in the right direction?
Thanks!

I suggest you to flash the device to 20171114 firmware version, because i'm sure it will work in a correct way for your needs.
Here you can find ROM files
viewtopic.php?f=192&t=213272

Here you can find the flashing tutorial
viewtopic.php?f=192&t=319505

Hi Admin, it took me a while but I think that I successfully flashed to the 20171114 firmware version as you suggested but I am still having the same result.  See screenshot below to see if I did it correctly?  I set the USB connection to "file transfer" mode, unplug it, but when I plug back in it goes back to "charging only" mode every time.  I tried the developer mode trick again but it is still not working.  Can you provide any other suggestions?  I am still looking for a solution to make the default USB connection to "file transfer."  Thanks in advance...

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did you perform a factory reset after the firmware downgrade?