REQ: Blackview BV9900 Pro Root/Recovery

[DaedalusWren]

This has got to be one of the most difficult phones I have ever had to find definitive answers to rooting. I have rooted a few phones in the past. Even the almost impossible LG-G4 Canadian version. TWRP and Magisk have been instrumental, but for this phone, I am finding bits and pieces, most dealing with the non-pro Android 9 version of the phone. If there is anyone that can give me a rundown of accomplishing this on Android 10, I would be very appreciative. My current firmware is (BV9900Pro_S900AA_V1.0_20201116V03_20201116-1727) Non-EU version.

I have checked TWRP and the Blackview is not even listed, magisk shows (Ramdisk - YES, A/B - NO, SAR - YES)

Thanks.

 

[do1fmd]

Rooting this phone is quite strait forward with Magisk.
I put some instructions on Github.

 

[mentalis]

i first tried rooted it a few weeks after i got it, got root working for the most part and ever almost got a recovery working but anything that wasnt the official rom pretty much didnt work right for me.
even the android 10 update had its fair share of problems and i was pretty much forced to downgrade to stock 9 as important stuff i used for work back then just didnt work, while i like the phone itself the lack of support and the censorship on the official blackview forums have left behind a pretty sour taste of the blackview brand.
half a year after launch android 10 was supposed to come out yet they never went past the preview build phase as far as i know.
its kinda sad as its one of the bigger chinese brands and i have seen it a few times with others which made me think it would try harder to push updates and fix problems as it was supposed to be a flagship phone, but instead it quietly got pushed aside after its initial release.

this may be a bit offtopic but im just wanting to share how i experienced the bv9900 pro

 

[mprudic0404]

i Agree, the BLACKVIEW forums are just awful.
i took a break from my blackview playing, as it really frustrated me,- not record video- on a FACTORY ROM.
(fun fact, - i have 3 of these, and ALL 3 can not record video)
these were all bought from blackview direct for a heck-of-a-deal.

we will all look back someday, and wonder what was a blackview.. (companies that ignore there core dont last) but for this moment, i just wanted a mid grade phone to replace my note4 .

- there was a DEV on there forums that was more helpful than the companys own staff, and i wonder how we can ask for his help? (he had answers , indicating he had been involved in firmware development)

 

[do1fmd]

i Agree, the BLACKVIEW forums are just awful.
i took a break from my blackview playing, as it really frustrated me,- not record video- on a FACTORY ROM.
(fun fact, - i have 3 of these, and ALL 3 can not record video)
these were all bought from blackview direct for a heck-of-a-deal.

What is your problem with video recordings?
I have Android 10 and I can record videos without any problem by stock camera app and also by OpenCamera from F-Droid.

 

[gromain]

Hi @do1fmd ,

I was having a look at your guide, and really it's super good! Thanks a lot for all the details!

Do you know if it's possible to do a manual update with spflashtool without flashing the partition userdata (and subsequently loosing said data)?

I just did a full backup, so I'm thinking that I might as well try it. But still, I'm curious if you have tried this before.

 

[do1fmd]

I haven't tried that before, but I guess it will work.
Please be aware: You have to modify the scatter file, if you want to backup your current userdata partition.
I added this in the guide recently.

 

[gromain]

Thanks for your reply. I'll try it and report then.

I did the modification of the scatter file, so I'm confident the backup was complete, userdata image is 111GB big!

 

[gromain]

And I'm happy to report it worked perfectly.

My phone was already rooted, so I flashed at the same time the update files and the patched boot.img created by Magisk and the specific vbmeta file. Userdata partition was not flashed as well as the preloader partition.

 

[RamHa]

Any news about official rom update? About bug fixing on Android 10? Btw, MEGA links doesnt working, so pls, post it again files( patched rom, boot, magisk etc) with instruction bcz it is quite confusing how to and with which files and rom to root BV9900PRO. Patched Android 10 or 9 or both? Also, anyone manage to achieve true Fast charge on this device and how? So, if anyone can uploaded it ALL files at ONE folder or give me links with files and instructions, i'll'd be very greatful. Namaste friends!