Hovatek Forum DEVELOPMENT Android [Please help] TWRP for Blackview BV9800Pro (MT6771V/CT) Android PIE
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[Please help] TWRP for Blackview BV9800Pro (MT6771V/CT) Android PIE

[Please help] TWRP for Blackview BV9800Pro (MT6771V/CT) Android PIE

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X3non
X3non
X3non
Recognized Contributor
22,062
27-04-2020, 04:53 PM
#21



(27-04-2020, 02:18 PM)tomron ...I tried to flash your TWRP on a non-pro BV9800, but run into errors during flash procedure
...
could you assist on that issue?
BR Tom

you're to unlock bootloader of your device and flash empty vbmeta along with twrp using fastboot
bootloader unlock @ https://www.hovatek.com/forum/thread-19578.html
empty vbmeta in method 3 @ https://www.hovatek.com/forum/thread-32719.html
tomron
tomron
tomron
Junior Member
24
27-04-2020, 05:09 PM
#22
(27-04-2020, 04:53 PM)X3non
(27-04-2020, 02:18 PM)tomron ...I tried to flash your TWRP on a non-pro BV9800, but run into errors during flash procedure
...
could you assist on that issue?
BR Tom

you're to unlock bootloader of your device and flash empty vbmeta along with twrp using fastboot
bootloader unlock @ https://www.hovatek.com/forum/thread-19578.html
empty vbmeta in method 3 @ https://www.hovatek.com/forum/thread-32719.html
Thanks for the fast reply! 
I will try it out!
neorob
neorob
neorob
Newbie
1
29-04-2020, 09:33 AM
#23
(22-03-2020, 02:22 AM)lypsky Hi! I installed TWRP on bv9800pro, but I didn’t manage to disable userdata encryption. I edited both fstab.mt6771 files in both /vendor/nvdata/ and /vendor/etc/ and formatted userdata from twrp, but after rebooting encryption always turn on. In folder /vendor/etc/ after reboot, the 'forcefdeorfbe' parameter is always restored. Also, I can not recommendet reset the phone if the native recovery is deleted from the phone, otherwise, instead of resetting, there will be a constant download of TWRP.
All the same, everything turned out.
To disable encryption, you need to install this patch  Disable_Dm-Verity_ForceEncrypt_03.04.2020.zip (https://androidfilehost.com/?fid=4349826312261749617) from under twrp, then format userdata, you can immediately install Magisk. EVERYTHING WORKS!!!
Thanks! Smile
HI! I installed the patch and touch didn't work anymore, but in the TWRP. So I reflashed boot.img and patched witch magisk (in this way touch works but I have the userdata partition encrypted). Is there any other way to get userdata decrypted?
X3non
X3non
X3non
Recognized Contributor
22,062
29-04-2020, 02:55 PM
#24
(29-04-2020, 09:33 AM)neorob HI! I installed the patch and touch didn't work anymore, but in the TWRP. So I reflashed boot.img and patched witch magisk (in this way touch works but I have the userdata partition encrypted). Is there any other way to get userdata decrypted?

you can try the methods @ https://www.hovatek.com/forum/thread-30160.html
tomron
tomron
tomron
Junior Member
24
15-05-2020, 09:19 AM
#25



(27-04-2020, 04:53 PM)X3non
(27-04-2020, 02:18 PM)tomron ...I tried to flash your TWRP on a non-pro BV9800, but run into errors during flash procedure
...
could you assist on that issue?
BR Tom

you're to unlock bootloader of your device and flash empty vbmeta along with twrp using fastboot
bootloader unlock @ https://www.hovatek.com/forum/thread-19578.html
empty vbmeta in method 3 @ https://www.hovatek.com/forum/thread-32719.html


Hello made all the things you proposed except the point that I flashed the autoported TWPRP (https://www.hovatek.com/blog/auto-twrp-p...-spd-v1-4/) before trying to flash vbmeta.




[Image: 1573be-1589530336.png]

seams that there is no vbmeta partition, I also can't witness this partion in the SP flashtool
 

actually I am not able to enter recovery mode, devices says its in "orange state" after unlocking the bootloader, but the devices boots up normally

any further suggestions? 


Thanks in advance
This post was last modified: 15-05-2020, 09:25 AM by tomron.
tomron
tomron
tomron
Junior Member
24
15-05-2020, 09:35 AM
#26
(15-05-2020, 09:19 AM)tomron
(27-04-2020, 04:53 PM)X3non
(27-04-2020, 02:18 PM)tomron ...I tried to flash your TWRP on a non-pro BV9800, but run into errors during flash procedure
...
could you assist on that issue?
BR Tom

you're to unlock bootloader of your device and flash empty vbmeta along with twrp using fastboot
bootloader unlock @ https://www.hovatek.com/forum/thread-19578.html
empty vbmeta in method 3 @ https://www.hovatek.com/forum/thread-32719.html


Hello made all the things you proposed except the point that I flashed the autoported TWPRP (https://www.hovatek.com/blog/auto-twrp-p...-spd-v1-4/) before trying to flash vbmeta.




[Image: 1573be-1589530336.png]

seams that there is no vbmeta partition, I also can't witness this partion in the SP flashtool
 

actually I am not able to enter recovery mode, devices says its in "orange state" after unlocking the bootloader, but the devices boots up normally

any further suggestions? 


Thanks in advance
Side info to what i previously have done to the device:

ported stock recovery.img with the Hovatek TWPRP Autoporter
unlocked bootloader via fastboot
patched boot.img with Magisk Manager to disable verified boot
flashed patched Magisk image via fastboot to device
flashed autoported TWRP recovery via SP flashtool
tried to enter into recovery mode --> failed
tried to flash empty vbmeta.img --> failed
This post was last modified: 15-05-2020, 09:36 AM by tomron.
X3non
X3non
X3non
Recognized Contributor
22,062
15-05-2020, 04:28 PM
#27
(15-05-2020, 09:35 AM)tomron Side info to what i previously have done to the device:

ported stock recovery.img with the Hovatek TWPRP Autoporter
unlocked bootloader via fastboot
patched boot.img with Magisk Manager to disable verified boot
flashed patched Magisk image via fastboot to device
flashed autoported TWRP recovery via SP flashtool
tried to enter into recovery mode --> failed
tried to flash empty vbmeta.img --> failed

create a new thread for your device issue by clicking "ask question" at the top
in the new thread, also provide info on device model, chipset and android version
tomron
tomron
tomron
Junior Member
24
15-05-2020, 04:41 PM
#28
(15-05-2020, 04:28 PM)X3non
(15-05-2020, 09:35 AM)tomron Side info to what i previously have done to the device:

ported stock recovery.img with the Hovatek TWPRP Autoporter
unlocked bootloader via fastboot
patched boot.img with Magisk Manager to disable verified boot
flashed patched Magisk image via fastboot to device
flashed autoported TWRP recovery via SP flashtool
tried to enter into recovery mode --> failed
tried to flash empty vbmeta.img --> failed

create a new thread for your device issue by clicking "ask question" at the top
in the new thread, also provide info on device model, chipset and android version
It's a BV9800 like the thread is supposed for...
tomron
tomron
tomron
Junior Member
24
15-05-2020, 08:21 PM
#29
(15-05-2020, 04:28 PM)X3non
(15-05-2020, 09:35 AM)tomron Side info to what i previously have done to the device:

ported stock recovery.img with the Hovatek TWPRP Autoporter
unlocked bootloader via fastboot
patched boot.img with Magisk Manager to disable verified boot
flashed patched Magisk image via fastboot to device
flashed autoported TWRP recovery via SP flashtool
tried to enter into recovery mode --> failed
tried to flash empty vbmeta.img --> failed

create a new thread for your device issue by clicking "ask question" at the top
in the new thread, also provide info on device model, chipset and android version
started new thread here: https://www.hovatek.com/forum/thread-33982.html
tomron
tomron
tomron
Junior Member
24
01-06-2020, 07:36 PM
#30



managed to install TWRP and Custom Rom

further details, tools and flashfiles: https://t.me/BV9800_Series_Infos  Chat: https://t.me/BV9800_Series_chat
This post was last modified: 11-06-2020, 09:10 AM by tomron.
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