You should not ask the users to do impossible things!
As all download links published which are older than the Update to Android 7 are dead links no user which has not prior saved the old ROMs can downgrade...

http://androidroothow.pro/how-to-root-blackview-bv7000-pro/ This is specific for this phone but neither of the two programs suggested to do root works on the terminal. Another question .... Have you managed to install some custon recovery? Sorry, but it's not specific as you don't have anything poi...

And where do we find TWRP for the BV7000pro?
The only one I found was on a russian board and when I messages the creator on xda I got no response...

The "manuals" in the web are just generic and lead you to Kingroot without the actual phone mentioned has been successfully rooted...

Hi, Derk, so if I can do the root can I activate those bands via software? Do you know a software to unlock LTE bands? I read at XDA about a lot of tries but no success... Hello, this is a hardware issue, the software can not fix it. Half true and half not. The used chipset is able to transmit and ...

Charlysan2 wrote:

Hi, Derk, so if I can do the root can I activate those bands via software?

Do you know a software to unlock LTE bands?
I read at XDA about a lot of tries but no success...

The issue is that the device is seen as rooted due to lazy developers but is not rooted.
And this issue exists since looooong, not easy for some of the users.

Hi, the technical sheet of the MT6750T says it can operate on all 3G and 4G bands. Please Admin, I will confirm if Blackview will update the firmware to activate the bands 3g in B2 and B4, as well as in LTE bands B2 and B4. Thank you. Sorry, there is an other hardware limitation that don't allow us...

XL and Telkomsel also support Band 3 and 8.
So not usable for Bolt and Smartfen but if you are limited by hardware...
I'm using XL as where I live they have the better signal.

Dongermon wrote:

so you worked for SAP?

Correct...