I'm using Ubuntu and didn't have any problems with connecting device via USB. Maybe try to install latest USB drivers (https://www.getdroidtips.com/download-blackview-bv9900-usb-drivers/) or run Ubuntu live (or install) and access device from it - it's really easy.
Hi, I own one Blackview BV9900 (no Pro) and managed to do some work on it. Pro version has pretty the same hardware, so it should work on it too:
- root works with no problems with Magisk (just download stock boot.img, update it with MagiskManager app and flash),
- I've also managed to build working TWRP recovery ROM and I think I'll try to push it to twrp repositories when find some time.
I tried this before I saw this thread with the 9900 pro. The checksum or something doesn't add up with the flashed magisk edited boot.img and puts it in a boot loop.. I had to reflash the original boot.img. no root on my pro yet. Original IMG is 30ish megabytes and the patched one is 10mb. An I doing something wrong?
[Edit] I forgot to unlock bootloader. Did it with fastboot. The magisk edited boot.img flashed. Now that I have basic proof of rootability, I'll probably flash SuperSU instead.
Firmware stock bv 9900 pro (Eu/Non Eu) and boot root magisk.img
Hello, Here are the resources concerning the Bv9900 pro,
Enjoy the sequel!
Ps: flash the integrality of one if it doesn't work, flash the integrality of the other. (The Sp flash tool can be very useful for these files.
Re Good continuation!