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REQ: Blackview BV9900 Pro Root/Recovery

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dzert127

Member
May 8, 2020
10
2
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.
 

dzert127

Member
May 8, 2020
10
2
Can't say. Manufacturer haven't published firmware for pro version yet. It is likely to work since the hardware is similar to non-pro, but I've tested in only on non-pro version and it works.
 

dzert127

Member
May 8, 2020
10
2
Unfortunately it is not that simple. Even if it's not compatible it usually flashes successfully anyway and problems begin with boot from such partition (boot-loop etc.) and then you will need original ROM (or another compatible) to make device usable again.
Maybe try to ask on this Blackview forum if this non-pro images are compatible with pro version. I think there is huge chance for that.
 

bestaudioguy

New member
Jun 12, 2014
4
0
Branchburg
www.bestaudioguy.com
Issues

Hey,
Have the BV9900 using Verizon. Since the 1st day using the phone I'm unable to receive calls from iPhones. Went to Verizon to see if they had a setting I missed. Nope. Had them dial my number from their iPhones and they all failed to connect. I can call out to iPhones. Contacted BV and was told to save an file and send it to them, which I did and the reply was no problem found.
They just pushed out an update, which after downloaded I now have an issue making ANY calls out. Sometimes it will connect for a few seconds and then fail. The only way to make a call now is be disabling the LTE Enhanced setting under Network. The side effect of doing that is nothing else works. No texts, news, anything!
I now see that someone else is also having the same issue.

This BV9900 replaced a BV9500 (the brick) and has zero issues with that phone. Yes its a different version of andriod, but still was able to receive and place any calls to anyone. I took the SIM out of the 9900 and put it in the 9500 and everything worked.

Not sure what to do as BV does not have an answer or appear to even care.
Thanks
 

n16ht5

New member
Oct 30, 2012
2
0
Can you assist me? When I restart into bootloader menu I get the annoying noise windows makes when you unplug something from USB, and the device manager window flashes. Fastboot devices returns with nothing even when phone is in fast boot mode.... GAH
 

rollerce

Member
Oct 11, 2011
43
7
Burnaby
www.madhatterztea.com

pbsavages

Member
Oct 22, 2012
22
2
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.
 
Last edited:

mattchapa

Member
Aug 30, 2011
5
0
Root for the BV9900 Pro?

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.

So Im confused. Did this method work for you in the BV9900 Pro or not?
 

backtoroot

New member
Aug 18, 2020
4
0
I have the BV9900 PRO too and would love to get installed LineageOS GSI on it. Tried the unofficial TWRP 331 on my BV9900pro without success - boot loop. It looks like that the PRO is more different compared to the BV9900.
unofficialtwrp.com/blackview-bv9900-twrp-3-3-1-root/
 
Last edited:

backtoroot

New member
Aug 18, 2020
4
0
still no successful Root/Recovery possible?

Can anyone help me to get TWRP recovery installed on the Blackview BV9900Pro, please ? Can't find a working TWRP for the Pro.
As written above, the version for the (non Pro) BV9900 doesn't work.

Thanks for any help!
 

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  • 2
    Firmware stock bv 9900 pro (Eu/Non Eu) and boot root magisk.img

    https://mega.nz/folder/OgkS3LKS#dfYnPrNfzRDh-xcTWGXhyA
    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!
    2
    Firmware stock bv 9900 pro (Eu/Non Eu) and boot root magisk.img

    https://mega.nz/folder/OgkS3LKS#dfYnPrNfzRDh-xcTWGXhyA
    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!

    THANK YOU quelqun700 for sharing this. I was finally able to root my BV9900 Pro. The downside is that I had to downgrade to Android 9, but who cares, I largely prefer a rooted Android 9 than an unrooted Android 10.
    I'm sharing the steps I followed so that they may help other users.

    PREREQUIREMENTS:

    1) Download the Android9 stock firmware with the patched boot image, as shared a few posts ago by good user quelqun700 (https://mega.nz/folder/OgkS3LKS#dfYnPrNfzRDh-xcTWGXhyA).
    2) Install SP FLASH TOOLS (https://spflashtool.com/).
    3) Install ADB and fastboot for windows (https://androidmtk.com/download-minimal-adb-and-fastboot-tool).
    4) Install the MTK drivers for Windows (https://androidmtk.com/download-mtk-usb-all-drivers).

    OPERATIONS:

    0) Backup all your data as these operations will erase everything in your phone, except for the external SD card.

    1) Enable Developer Options in your phone.
    1.1-To do this, go to Settings -> System -> About phone -> and then, tap 7 times over the "build number" entry.

    2) Enable OEM unlock and USB debugging.
    2.1-To do this, enter the newly created "Developer Options" menu by going to Settings -> System -> Developer options.
    2.2-Then, enable "OEM unlocking" and "USB debugging". If the phone asks about accepting some RSA fingerprint, click OK.

    3) Unlock the bootloader.
    3.1-To do this, from your PC, open a command prompt and type:
    -"adb reboot bootloader" and wait a few seconds
    -"fastboot flashing unlock" and press the Volume Up button on your phone to confirm the operation.
    1.png

    3.2-Switch on the phone and repeat the initialization wizard.

    4) Flash the patched firmware.
    4.1-To do this, open SP Flash tools on your PC, go to the "Download" tab;
    4.2-then select the "Scatter-loading file" that you can find in the file shared by user quelqun700;
    4.3-then, click on the row containing the boot image and select the patched boot image, which is also contained in the file shared by user quelqun700;
    4.4-then select "Firmware upgrade" from the drop-down menu.
    CAUTION!!! Never, never chose the option "Format all + download", as this will erase the contents of the NVRAM which contains useful data such as your IMEI. If you do so, you will get in big troubles, which can be hardly fixed.
    4.5-Then, click the "Download" button with the green arrow, and SP flash tool will wait for the phone to reboot.
    4.6-then, reboot the phone and wait for the flashing to complete.
    2.png


    5) Install Magisk manager
    5.1-To do this, install the Magisk Manager app on your phone and follow the instructions.

    Voilà, your phone is now rooted ^ÿ^


    In case some day you'll want to un-root and restore your phone to factory status, you basically have to download the original Android10 stock firmware that you can find on the internet, and repeat the flashing process.
    1
    Hi, finally managed to share my rooted boot and custom recovery images. Both have been successfully flashed into my BV9900 and worked fine. Maybe this can be useful to someone.
    Recovery image with Twrp:
    https://www.androidfilehost.com/?w=files&flid=313541
    Boot image patched with Magisk (also you need to install MagiskManager app to manage root access in the system):
    https://www.androidfilehost.com/?w=files&flid=313543
    1
    So Im confused. Did this method work for you in the BV9900 Pro or not?

    The magisk root method works with the patched boot.img, though it is a systemless root only. I couldn't get a custom recovery to work yet but haven't look at it in a couple weeks. I was waiting for more people to get this device for it to gain momentum.
    1
    I made the image with some tool I found
    I used linux to flash it as windows didnt want to detect my phone in fastboot mode
    First I flashed the vbmeta (fastboot flash vbmeta vbmeta.img)
    Then I flashed the recovery (fastboot flash recovery recovery.img)
    I'm running android 10 but the recovery is a patched version of the one included with the original android 9 firmware so it should work
    And it's twrp 3.4 which should be the newest