Blackview User Forum

Root procedure ?

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Priyanga
Posts: 64
Joined: Sun May 21, 2017 2:59 pm

Re: Root procedure ?

Fri Mar 15, 2019 6:24 pm

Thanks I will try again latet.thanks for your support.thanks again
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Ekavun
Posts: 13
Joined: Sun Mar 03, 2019 5:42 pm

Re: Root procedure ?

Sun Mar 17, 2019 9:42 pm

My messages are still being moderated and it's been 3 days since I responded to your offer to provide me with the extracted rom and patch. They have not yet approved it, so I'm trying again.

Sams, it'd be much appreciated indeed. If you can provide  the rom and the patched boot, I'm sure it'd help.

And on the subject of moderation, do you also have to wait for a moderator to approve all your messages?

E
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ogopog
Posts: 1
Joined: Tue Jan 01, 2019 12:29 pm

Re: Root procedure ?

Mon Mar 18, 2019 2:33 am

Ekavun wrote:
Sams, thanks for tutorializing. Hard to follow from Mac.

In order to setup Magisk and backup the boot image from mac (ADB), I had to unlock the boot loader.
However, it looks like there is no TWRP recovery IMG for Blackview, and I don't want to flash anything onto my phone.
So, I'm stuck and cannot extract my boot.img for patching.

In other words, the boot partition is on /dev/block/mmcblk0p20, but I don't have read permissions.

My build is BV6800Pro_Blackview-V1.4_20180920_20181130-1918

Can somebody clearly answer, once and for all, where to download the official roms for that particular build? If I cannot extract my own boot image, I'd like to at least use the official one instead.

I have no experience with Mac, but I did it from Linux, guess it's similar...

You could try to circumvent read permissions by copying boot image first to phone's internal storage: 
go into adb shell, when in, type su to get privileged rights:
Code: Select all
./adb shell
BV6800Pro:/ $ su
BV6800Pro:/ #

then copy boot partition  (let's say into download directory, so it's easy to find it later)
Code: Select all
BV6800Pro:/ # dd if=/dev/block/mmcblk0p20 of=/sdcard/Download/boot.img

Next, patch image in Magisk Manager, as sams  explained.
Copy patched image from phone.
Now you can reboot your phone into the bootloader, and flash the patched boot image with fastboot:

Code: Select all
fastboot flash boot patched_boot.img
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sams
Posts: 156
Joined: Mon Aug 01, 2016 4:39 pm

Re: Root procedure ?

Tue Mar 19, 2019 9:30 pm

Ekavun wrote:
sams wrote:
Ekavun, you don't need to unlock the bootloader and you don't need TWRP.
You only need to use flash tool to extract and flash back your boot partition. You can't use adb to do that.
I asked blackview 4 months ago to publish the stock ROM. They never did.
I extracted the stock ROM myself and saved all update.zip as they came.
I can provide the original boot image for your ROM version (or even the Magisk patched one if you want), but you will still need to flash back the patched image with flash tool.

I would be most grateful for the rom and the patched image. Now that the boot loader is unlocked, I can flash the boot image from Fastboot. Is that not safe to do?


Thank you!

Here it is : BV6800Pro_Blackview-V1.4_20180920_20181130-1918_Magisk-v18.1_patched_boot.img
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Ekavun
Posts: 13
Joined: Sun Mar 03, 2019 5:42 pm

Re: Root procedure ?

Wed Mar 20, 2019 9:52 am

ogopog wrote:
I have no experience with Mac, but I did it from Linux, guess it's similar...

You could try to circumvent read permissions by copying boot image first to phone's internal storage: 
go into adb shell, when in, type su to get privileged rights:
Code: Select all
./adb shell
BV6800Pro:/ $ su
BV6800Pro:/ #

then copy boot partition  (let's say into download directory, so it's easy to find it later)
Code: Select all
BV6800Pro:/ # dd if=/dev/block/mmcblk0p20 of=/sdcard/Download/boot.img

Next, patch image in Magisk Manager, as sams  explained.
Copy patched image from phone.
Now you can reboot your phone into the bootloader, and flash the patched boot image with fastboot:

Code: Select all
fastboot flash boot patched_boot.img


Hello there,
It's a catch 22. Your process suggests to use su to read the boot image, but the reason I'm want that image, in the first place, is to root the phone.
If I could su into my phone, I don't think I'd have an issue reading the boot partition and copying it.

I use both Mac and Linux, and so I'm grateful for your explanations nevertheless. In fact, I've found a lot more instructional tutorials Googleing for Linux, than anything else. Google Root Android, and you find 99% junk from apps and softs that you cannot be sure about. Google Root Android from Linux, and you find very instructional tutorials.
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Ekavun
Posts: 13
Joined: Sun Mar 03, 2019 5:42 pm

Re: Root procedure ?

Wed Mar 20, 2019 9:56 am

sams wrote:
Ekavun wrote:
sams wrote:
Ekavun, you don't need to unlock the bootloader and you don't need TWRP.
You only need to use flash tool to extract and flash back your boot partition. You can't use adb to do that.
I asked blackview 4 months ago to publish the stock ROM. They never did.
I extracted the stock ROM myself and saved all update.zip as they came.
I can provide the original boot image for your ROM version (or even the Magisk patched one if you want), but you will still need to flash back the patched image with flash tool.

I would be most grateful for the rom and the patched image. Now that the boot loader is unlocked, I can flash the boot image from Fastboot. Is that not safe to do?


Thank you!

Here it is : BV6800Pro_Blackview-V1.4_20180920_20181130-1918_Magisk-v18.1_patched_boot.img

Sams, t'es génial. Merci! I'm going to trust a stranger to patch my phone, but somehow I feel better about it than installing a One Click root shit.


And it looks like I'm not being moderated anymore!!! Hoorraaa!

Sams, a big thanks from your neighbor in Switzerland, if you are French that is.
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wilczur
Posts: 20
Joined: Fri Jan 11, 2019 4:48 pm

Re: Root procedure ?

Sat Mar 23, 2019 7:52 am

How about fingerprint work with this root? Bank apps and other? I found root tutorial in russian forum and they said that fingerprint function will not work becouse it need decrypt partition
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sams
Posts: 156
Joined: Mon Aug 01, 2016 4:39 pm

Re: Root procedure ?

Sun Mar 24, 2019 7:35 pm

wilczur wrote:
How about fingerprint work with this root? Bank apps and other? I found root tutorial in russian forum and they said that fingerprint function will not work becouse it need decrypt partition

I tested 4 or 5 bank apps without issues, even GPay works perfectly.
Don't forget to hide Magisk Manager: go to (Settings → Hide Magisk Manager) and if your bank app say that your phone is rooted, just add the app to MagiskHide list
More info : https://topjohnwu.github.io/Magisk/tuto ... magiskhide

PS : fingerprint authentication will NOT work if you don't unlock your phone with your code/pattern a least one time after a reboot.
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wilczur
Posts: 20
Joined: Fri Jan 11, 2019 4:48 pm

Re: Root procedure ?

Sun Mar 24, 2019 9:40 pm

Any data on phone will be not lost? I have a lot of data and settings, so if any lost it be very bad for me.  Does this method is safe?
And i want root to use xposed with deviceidchager, does it work with magisk?
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sams
Posts: 156
Joined: Mon Aug 01, 2016 4:39 pm

Re: Root procedure ?

Mon Mar 25, 2019 5:54 pm

wilczur wrote:
Any data on phone will be not lost? I have a lot of data and settings, so if any lost it be very bad for me.  Does this method is safe?
And i want root to use xposed with deviceidchager, does it work with magisk?

Your data are pretty safe, I have never lost anything with Magisk.
BUT like in every system modification, it's better to save your data before doing anything. It easy with Flash Tool.
Xposed can be installed with Magisk but it's a really bad idea as Xposed break safetynet when active.
Magisk give access to a lot of module and you don't need Xposed to use change your ID.
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