Hi there !
Can you please post the original BV6800 Pro ROM ?

Sure, just asked tech team about that.

still no rom available ?

I'll post it when available

can I have a download link to update locally last version of bv6800, via OTA say no update, tech service tell me one update is available

At the moment the only way to update the phone is via OTA. You'll have to wait.

And after more than 2 years, here it is !
stock rom link of BV6800 Pro

Also I moved to the BV9800pro, so, yeah, too late. Intention is everything right?

How can I install it on my phone?

Greyfox87 wrote:

How can I install it on my phone?

You can learn form this post:
http://bbs.blackview.hk/viewtopic.php?f=17&t=532865