Database Info

I can't root my OS12 !

And I have no idea why. Before I downloaded the newest update I upgraded my TWRP to the latest version. After the update I tried first to install SuperSU via google store but didnt work so i downloaded the installable zip and tried through TWRP. All I get is : E: failed to verify whole-file signature; E: signature verification failed.
Tried the old SuperSu that always worked (2.02) but I get the same bug.
I think the problem is that instead of TWRP when i start my phone with start button + vol down it gets into CYANOGEN recovery. I just installed TWRP ver 2.8.5.1 but its not working =/ dont know what to do, help please

MrSeler said:
And I have no idea why. Before I downloaded the newest update I upgraded my TWRP to the latest version. After the update I tried first to install SuperSU via google store but didnt work so i downloaded the installable zip and tried through TWRP. All I get is : E: failed to verify whole-file signature; E: signature verification failed.
Tried the old SuperSu that always worked (2.02) but I get the same bug.
I think the problem is that instead of TWRP when i start my phone with start button + vol down it gets into CYANOGEN recovery. I just installed TWRP ver 2.8.5.1 but its not working =/ dont know what to do, help please
Click to expand...
Click to collapse
You need to resinstall TWRP, just after you have done so, reboot back to TWRP instead of rebooting the whole system. Once back in TWRP you can flash SuperSU again, then reboot and you should be fine. Also make sure you have the cyanogen recovery option unticked under developer settings.

gsmyth said:
You need to resinstall TWRP, just after you have done so, reboot back to TWRP instead of rebooting the whole system. Once back in TWRP you can flash SuperSU again, then reboot and you should be fine. Also make sure you have the cyanogen recovery option unticked under developer settings.
Click to expand...
Click to collapse
How do i reinstall TWRP? im pretty sure ive done it already but still when i turn on the phone I have the cyanogen recovery on, tried to do it with TWRP manager (at first i couldnt start it because but later it worked. However, when i click on "Reboot to Recovery" it does not work) I have recovery installed in TWRP manager (ver 2.8.6.0) maybe i can do sth with this ?
Edit: I was able to start TWRP manager, now I'm not again because it says "root is required for this app"

MrSeler said:
How do i reinstall TWRP? im pretty sure ive done it already but still when i turn on the phone I have the cyanogen recovery on, tried to do it with TWRP manager (at first i couldnt start it because but later it worked. However, when i click on "Reboot to Recovery" it does not work) I have recovery installed in TWRP manager (ver 2.8.6.0) maybe i can do sth with this ?
Edit: I was able to start TWRP manager, now I'm not again because it says "root is required for this app"
Click to expand...
Click to collapse
You'll have to install it via PC fastboot or using a Tool, see below.
Install custom recovery via fastboot:
http://forum.xda-developers.com/showthread.php?t=2788632
Toolkit:
http://forum.xda-developers.com/oneplus-one/development/oneplus-one-toolkit-manudroid19-gui-t2807418
Make sure the following option is turned off.
Settings>Developer options>Update Cyanogen recovery - Off

gsmyth said:
You'll have to install it via PC fastboot or using a Tool, see below.
Install custom recovery via fastboot:
http://forum.xda-developers.com/showthread.php?t=2788632
Toolkit:
http://forum.xda-developers.com/oneplus-one/development/oneplus-one-toolkit-manudroid19-gui-t2807418
Make sure the following option is turned off.
Settings>Developer options>Update Cyanogen recovery - Off
Click to expand...
Click to collapse
Tried via fastboot and seemingly it worked as you can see here http://i.imgur.com/vKTQUQ5.png
But when i turn on the phone i still get cyanogen recovery =/ will try the tool kit and let You know

MrSeler said:
Tried via fastboot and seemingly it worked as you can see here http://i.imgur.com/vKTQUQ5.png
But when i turn on the phone i still get cyanogen recovery =/ will try the tool kit and let You know
Click to expand...
Click to collapse
Once it flashes, are you rebooting back into recovery first (without switching off, fully rebooting, anything else)? You should boot into TWRP and then you can reboot fully, it should be fine. If you just reboot out of TWRP after flashing the it gets overwritten by the stock cyanogen recovery.
After completing the TWRP flash in ABD run the following command.
Code:
adb reboot recovery

gsmyth said:
Once it flashes, are you rebooting back into recovery first (without switching off, fully rebooting, anything else)? You should boot into TWRP and then you can reboot fully, it should be fine. If you just reboot out of TWRP after flashing the it gets overwritten by the stock cyanogen recovery.
After completing the TWRP flash in ABD run the following command.
Code:
adb reboot recovery
Click to expand...
Click to collapse
Im doing what Im told, so - After the phone has booted back up, turn it off. Now to enter your newly installed custom recovery, hold volume down + power. The phone should boot into recovery mode.
Wish I wasnt so braindead on this field =/ and the cyanogen recovery welcomes me every time
okay so instead of fastboot reboot command i should write the one you gave me? gonna try
EDIT: ERROR, DEVICE NOT FOUND

yeah, i was doing it wrong but i did it right this time and it is still not working. Have my usb debugging on
Is it possible that after the update i dont have the bootloader anymore?

MrSeler said:
yeah, i was doing it wrong but i did it right this time and it is still not working. Have my usb debugging on
Is it possible that after the update i dont have the bootloader anymore?
Click to expand...
Click to collapse
Your boot loader shouldn't be touched.

gsmyth said:
Your boot loader shouldn't be touched.
Click to expand...
Click to collapse
Okay. I tried and tried but failed. I have no idea what to do anymore. Downloaded new drivers for pc and new fastboot, tried like 15times to flash twrp on my phone and seemingly it worked but when I rebooted, turned it off and on again with volume - it's always cyanogen recovery there, never twrp. I downloaded twrp manager but it won't work because it requires root and I can't root because manager won't work. Saw on oneplus forum that some people have exact same problem but there S been no solution so far and I have no idea what to do anymore. The only thing I haven't tried yet is to hold start+volume- keys after I flash twrp and reboot the phone using the code, so instead of having to turn it off and on again maybe I ll be able to get into the twrp instantly and it won't get overwritten by cyanogen recovery.

MrSeler said:
Okay. I tried and tried but failed. I have no idea what to do anymore. Downloaded new drivers for pc and new fastboot, tried like 15times to flash twrp on my phone and seemingly it worked but when I rebooted, turned it off and on again with volume - it's always cyanogen recovery there, never twrp. I downloaded twrp manager but it won't work because it requires root and I can't root because manager won't work. Saw on oneplus forum that some people have exact same problem but there S been no solution so far and I have no idea what to do anymore. The only thing I haven't tried yet is to hold start+volume- keys after I flash twrp and reboot the phone using the code, so instead of having to turn it off and on again maybe I ll be able to get into the twrp instantly and it won't get overwritten by cyanogen recovery.
Click to expand...
Click to collapse
OK so i am experiencing the EXACT same issues. When I go into Fastboot Mode all I get is a small cyanogen head forllowed by the words 'FASTBOOT MODE' I get no menu to navigate or anything. TWRP appears to install but I get Cyanogen recover every time. If I use the toolkit and go to fastboot mode it sees it as an unlocked fastboot device but will not allow me to root the device.

oasisdave said:
OK so i am experiencing the EXACT same issues. When I go into Fastboot Mode all I get is a small cyanogen head forllowed by the words 'FASTBOOT MODE' I get no menu to navigate or anything. TWRP appears to install but I get Cyanogen recover every time. If I use the toolkit and go to fastboot mode it sees it as an unlocked fastboot device but will not allow me to root the device.
Click to expand...
Click to collapse
After flashboot reboot do not let phone turn on again but use the start + volume- combination, it will take you to twrp. Found the solution finally but I still have some issues with graphics and Google account =/

MrSeler said:
After flashboot reboot do not let phone turn on again but use the start + volume- combination, it will take you to twrp. Found the solution finally but I still have some issues with graphics and Google account =/
Click to expand...
Click to collapse
Yeah, that's not working for me, still goes straight to Cyanogen Recovery.

See last question in FAQ thread:
http://forum.xda-developers.com/oneplus-one/help/faq-oneplus-one-frequently-questions-t2895136
Transmitted via Bacon

Device shuts down, when I try to enter TWRP from the bootloader.

My phone works great with official CM13 and I just wanted to flash a new boot logo to get rid of the "warning logo", but I can't enter TWRP. I shut down my phone, enter the bootloader, click on "recovery" but then the screen becomes black and the phone is off. I reflashed the recovery, but nothing changed.

Try latest TWRP (2.8.7.0)!

Flash another TWRP version

Which version do I need? I don't have a GPE, but I have a CM13 Custom Rom installed. Or should I take the Stock Img No theme?
twrp-2.8.7.0.-falcon_GPE.img - 9.8 Mo (AFH Mirror)
twrp-2.8.7.0.-falcon_GPE_NOTHEME.img - 9.2 Mo (AFH Mirror)
twrp-2.8.7.0.-falcon_STOCK.img - 9.8 Mo (AFH Mirror)
twrp-2.8.7.0.-falcon_STOCK_NOTHEME.img - 9.2 Mo (AFH Mirror)
On the official twrp site, there is no 2.8.7.0. There is just 2.8.6.0, but I have already instaleld it.

PureChris said:
Which version do I need? I don't have a GPE, but I have a CM13 Custom Rom installed. Or should I take the Stock Img No theme?
twrp-2.8.7.0.-falcon_GPE.img - 9.8 Mo (AFH Mirror)
twrp-2.8.7.0.-falcon_GPE_NOTHEME.img - 9.2 Mo (AFH Mirror)
twrp-2.8.7.0.-falcon_STOCK.img - 9.8 Mo (AFH Mirror)
twrp-2.8.7.0.-falcon_STOCK_NOTHEME.img - 9.2 Mo (AFH Mirror)
On the official twrp site, there is no 2.8.7.0. There is just 2.8.6.0, but I have already instaleld it.
Click to expand...
Click to collapse
Use TWRP from there: http://forum.xda-developers.com/moto-g/development/recovery-twrp-2-8-2-0-touch-recovery-t2980621 and one of the STOCK versions!

Doesn't work either

PureChris said:
Doesn't work either
Click to expand...
Click to collapse
What exactly? Reflashing TWRP?

Andus1988 said:
What exactly? Reflashing TWRP?
Click to expand...
Click to collapse
Flashing the latest TWRP Recovery (2.8.7.0).

PureChris said:
Flashing the latest TWRP Recovery (2.8.7.0).
Click to expand...
Click to collapse
And what's the error message ?
Give as much info as you have so we don't waste time on asking you basic questions ....

IGGYVIP said:
And what's the error message ?
Give as much info as you have so we don't waste time on asking you basic questions ....
Click to expand...
Click to collapse
Sry, I wrote it wrong. The flashing worked without an error, but it is still not possible for me to enter the recovery. No changes from 2.8.6.0 to 2.8.7.0.
I enter bootloader, press recovery, but the phone just shuts down. Booting to system is normally working and I can use my phone like always. I just can't enter the recovery.

PureChris said:
Sry, I wrote it wrong. The flashing worked without an error, but it is still not possible for me to enter the recovery. No changes from 2.8.6.0 to 2.8.7.0.
I enter bootloader, press recovery, but the phone just shuts down. Booting to system is normally working and I can use my phone like always. I just can't enter the recovery.
Click to expand...
Click to collapse
When you have exited recover for first time did you tick disable recovery flash ?

IGGYVIP said:
When you have exited recover for first time did you tick disable recovery flash ?
Click to expand...
Click to collapse
No I don't think so. Should I try any wipes that don't erase my system like chache and dalvik. Or should I flash CWM to try if that works?
Edit: I can enter the recovery with "adb reboot recovery" and it works fine. Even the "flackering line" is gone , but I think that is because of the latest twrp update. What shall I do now to get recovery access from bootloader?

PureChris said:
No I don't think so. Should I try any wipes that don't erase my system like chache and dalvik. Or should I flash CWM to try if that works?
Edit: I can enter the recovery with "adb reboot recovery" and it works fine. Even the "flackering line" is gone , but I think that is because of the latest twrp update. What shall I do now to get recovery access from bootloader?
Click to expand...
Click to collapse
Hmhhh very odd
Step one is make full backup in twrp also backup the SD card so you can wipe the phone clean
I would try to use moto g aio tool from xda and return the phone to full stock
And then download the latest recovery IMG from the link the dude gave you earlier and flash it using the aio tool (there you can remove the warning boot IMG safely too
Then push your files back and try to restore (skip cache and dalvik)
Report back and Good luck
The backup is essential since you can access recovery

Thx for your advices. I think the problem appeared first after one of the latest cm13 nightlies. I now install the latest from today and maybe it works. I don't know if the ROM can cause problems with the recovery, but maybe.
Then I will follow your steps.

I flashed the stock rom through fastboot. Then I flashed latest twrp + fix boot logo => still the same problem (phone shuts down when pressing "recovery mode". But there is a new problem now:
I can not enter the recovery through adb anymore. I type "adb reboot recovery" -> phone reboots -> 4 sec black screen -> "no command" with the android on the ground.
I got no error while flashing the recovery except the standard error (mismatched partition size recovery).

OH MY GOD.
I have never been such a retard...
In the bootloader I pressed the power button to confirm instead of the volume up button. oh damn.
I became used to the power button as the confirm button. I'm so clumsy in the last time, also with my motorcycle. I destroyed the electric a bit, because I connected two wrong cables...
Edit:
Flashed again to the stock rom for the 2nd time. Now everything is working for now.

The usual: recovery is not seandroid enforcing! FIXED

OK, I know this is a problem that many before had and I've researched the subject thoroughly. But I've only found ways to recover your phone from the soft-brick (one of those fake rubber bricks used in movies:laugh status which was something I did by myself by flashing a stock recovery via odin.
Now my problem is a different one: I have updated my s6 to stock 6.0.1 and all went fine. I then rooted the phone by installing SpaceX kernel and went on to flash recovery via odin. That is when the problem occurred and I've not been able to solve it. I tried flashing also via flashify but with the same result, i.e. phone frozen at the samsung galaxy s6 screen with the damn "recovery is not ......".
What could I try? Anyone knows how to circumvent this issue?
Thanks for any help.
Luca

Just flash this TWRP http://www.mediafire.com/?16c1zxj8gdz3mj4 (AP in Odin with F. Reset Time and Auto Reboot checked), it will boot automatically to recovery,
You will have a working recovery, but it can't reboot or shutdown the phone.
For that, click to "Advanced", "Terminal", and when the keyboard shows up, just type "reboot" or "halt"(without the ") et click on "enter".
Reboot: reboots the phone (the phone will reboot in system)
Halt: shutdown the phone

DJPops said:
Just flash this TWRP http://www.mediafire.com/?16c1zxj8gdz3mj4 (AP in Odin with F. Reset Time and Auto Reboot checked), it will boot automatically to recovery,
You will have a working recovery, but it can't reboot or shutdown the phone.
For that, click to "Advanced", "Terminal", and when the keyboard shows up, just type "reboot" or "halt"(without the ") et click on "enter".
Reboot: reboots the phone (the phone will reboot in system)
Halt: shutdown the phone
Click to expand...
Click to collapse
Thanks: I will try that right away and report back here. Is the procedure of rebooting and shutting down the phone permanent or is it just the 1st boot (I sense it is a permanent thing, but I hope it isn't). If, later on I flash a custom rom and then re-flash the recovery, will this thing go away?
Why is this seandroid thing happening? Are you able to explain it to me?

It's not permanent
Just the first boot. "It erase a boot script that say to your device to boot into recovery" (small explanation, it's not exactly that).
This happen sometimes when you try to update the Su binary via the SuperSU app (it try to reboot the device into recovery, but sometimes it doesn't work and the device is "stuck" on the recovery)
This message shows up on every boot if you have a custom kernel, and if you boot on recovery, it will maybe shows up (depend of your recovery).
It was stucking on this screen because the recovery that you tried to flash is not compatible with marshmallow bootloader. The link in my first answer is a working marshmallow TWRP, for S6 (not S6 edge/+).

DJPops said:
Just flash this TWRP http://www.mediafire.com/?16c1zxj8gdz3mj4 (AP in Odin with F. Reset Time and Auto Reboot checked), it will boot automatically to recovery,
You will have a working recovery, but it can't reboot or shutdown the phone.
For that, click to "Advanced", "Terminal", and when the keyboard shows up, just type "reboot" or "halt"(without the ") et click on "enter".
Reboot: reboots the phone (the phone will reboot in system)
Halt: shutdown the phone
Click to expand...
Click to collapse
Woohoo! It worked! I have a custom recovery, although i have to reboot the phone with a crank
Thanks a lot. Now I'm gonna go on messing it up some more!

DJPops said:
It's not permanent
Just the first boot. "It erase a boot script that say to your device to boot into recovery" (small explanation, it's not exactly that).
This happen sometimes when you try to update the Su binary via the SuperSU app (it try to reboot the device into recovery, but sometimes it doesn't work and the device is "stuck" on the recovery)
This message shows up on every boot if you have a custom kernel, and if you boot on recovery, it will maybe shows up (depend of your recovery).
It was stucking on this screen because the recovery that you tried to flash is not compatible with marshmallow bootloader. The link in my first answer is a working marshmallow TWRP, for S6 (not S6 edge/+).
Click to expand...
Click to collapse
Alas, it seems that it is permanent! It doesn't reboot into anything (neither system nor recovery. Haven't tried download, but I assume it would be the same thing). Furthermore it gets stuck and needs to be rebooted by pressing voldown and power. then it turns on into recovery again. It is a small price to pay, so no worries, but I always like to understand why things happen!
Could I have done another mistake?

Out of interest what random recovery did you give him? lol
Try arter97s mod of twrp 3.0.0-0
http://arter97.com/browse/exynos7420/recovery/twrp/g920fi/
Seems to be the best working mod of latest twrp at the moment. No issues booting etc, just no USB otg support currently.
Sent from my SM-G920I using Tapatalk

self_slaughter said:
Out of interest what random recovery did you give him? lol
Try arter97s mod of twrp 3.0.0-0
http://arter97.com/browse/exynos7420/recovery/twrp/g920fi/
Seems to be the best working mod of latest twrp at the moment. No issues booting etc, just no USB otg support currently.
Sent from my SM-G920I using Tapatalk
Click to expand...
Click to collapse
Oh yes!! This one really works all the way, reboot and all. However, af as you know, is there any of the previous version of TWRP that "agrees" with M bootloader?
Thanks mate
Luca

ManhIT modded recovery not a random recovery you know :mrgreen:

Haha, I was just wondering since it was just a mediafire link saying flash this.
Glad that arters recovery worked a bit better for you.
Recovery's are a bit hit and miss at the moment. That's the best one I've found so far.
I still haven't even got marshmallow, still rocking the latest lollipop which suffers similar problems.
Sent from my SM-G920I using Tapatalk

Oh okay, I'm french and I found this link on a french forum...
I used this recovery on my 920F and apart the reboot, it's working perfectly !

System is not booting after flashing TWRP

I have flashed TWRP 3.3.1 successfully . after that I rebooted into TWRP and it does not enter its recovery UI. After that, I tried to reboot the phone but it goes to recover screen again without entering recovery UI. I can't open my phone now. please help.
At the beginning, after flashing the twrp it was showing only TWRP screen not the options. then i rebooted the system and the phone rebooted without any issue (till now, phone was ok). then I again flashed the twrp but it remained the same. after that i tried different command from the Powershell. (fastboot boot twrp.img) and it showed downloading. after waiting for 5 min, I just closed the PowerShell and tried to reboot. from that time I cannot boot my phone anymore. then i again flashed the recovery but could not boot the phone. when i triy to boot the phone it only shows the recovery screen. I've attached the commands that I used to flash TWRP. Please help me to solve the problem.

zahidhasanzahid said:
I have flashed TWRP 3.3.1 successfully . after that I rebooted into TWRP and it does not enter its recovery UI. After that, I tried to reboot the phone but it goes to recover screen again without entering recovery UI. I can't open my phone now. please help.
At the beginning, after flashing the twrp it was showing only TWRP screen not the options. then i rebooted the system and the phone rebooted without any issue (till now, phone was ok). then I again flashed the twrp but it remained the same. after that i tried different command from the Powershell. (fastboot boot twrp.img) and it showed downloading. after waiting for 5 min, I just closed the PowerShell and tried to reboot. from that time I cannot boot my phone anymore. then i again flashed the recovery but could not boot the phone. when i triy to boot the phone it only shows the recovery screen. I've attached the commands that I used to flash TWRP. Please help me to solve the problem.
Click to expand...
Click to collapse
Have you tried booting the recovery by pressing Power + Vol up?

zahidhasanzahid said:
I have flashed TWRP 3.3.1 successfully . after that I rebooted into TWRP and it does not enter its recovery UI. After that, I tried to reboot the phone but it goes to recover screen again without entering recovery UI. I can't open my phone now. please help.
At the beginning, after flashing the twrp it was showing only TWRP screen not the options. then i rebooted the system and the phone rebooted without any issue (till now, phone was ok). then I again flashed the twrp but it remained the same. after that i tried different command from the Powershell. (fastboot boot twrp.img) and it showed downloading. after waiting for 5 min, I just closed the PowerShell and tried to reboot. from that time I cannot boot my phone anymore. then i again flashed the recovery but could not boot the phone. when i triy to boot the phone it only shows the recovery screen. I've attached the commands that I used to flash TWRP. Please help me to solve the problem.
Click to expand...
Click to collapse
Now since you are bootlooping we would need to install MIUI back again, to do this download the MiFlash Tool and the fastboot ROM for the latest MIUI, now copy it's file path and paste in MiFlash Tool, also make sure it detects your phone, now in the bottom right corner there would be an option like flash_everything_except_internal (similar to this) so that the internal storage isn't erased, now flash the ROM and let the phone boot up atleast once.
Once that's done use this TWRP (https://forum.xda-developers.com/re...unofficial-twrp-3-3-1-proper-t3933531/page4), it has a fix for the encryption bug and won't lead to a bootloop (the password/code/pattern asked in it is the same as the phone's), now you have TWRP installed and running

Thanks for your support. I followed the instruction and bootup the phone. But I'm afraid of flashing TWRP ?

It worked. I installed TWRP without any issue . Thanks again ?

TWRP 3.3.1 has bug, reinstall TWRP 3.2.3 and boot to recovery and then reboot to system.

Naveenthemi said:
Now since you are bootlooping we would need to install MIUI back again, to do this download the MiFlash Tool and the fastboot ROM for the latest MIUI, now copy it's file path and paste in MiFlash Tool, also make sure it detects your phone, now in the bottom right corner there would be an option like flash_everything_except_internal (similar to this) so that the internal storage isn't erased, now flash the ROM and let the phone boot up atleast once.
Once that's done use this TWRP (https://forum.xda-developers.com/re...unofficial-twrp-3-3-1-proper-t3933531/page4), it has a fix for the encryption bug and won't lead to a bootloop (the password/code/pattern asked in it is the same as the phone's), now you have TWRP installed and running
Click to expand...
Click to collapse
I have now flashed TWRP. But my phone isn't booting into TWRP recovery and the power button and volume UP button is booting the phone into MIUI recovery. Also when booting into the system, it's asking for a password when I had no passwords on the device. Will MiFlash Tool help in this case??

mad_hat said:
I have now flashed TWRP. But my phone isn't booting into TWRP recovery and the power button and volume UP button is booting the phone into MIUI recovery. Also when booting into the system, it's asking for a password when I had no passwords on the device. Will MiFlash Tool help in this case??
Click to expand...
Click to collapse
The password is on the phone lock screen? In that case your device must have got encrypted, you might have to format all partitions and then flash with Mi Flash.Do have a try with MiFlash first, might help if it's not encrypted. Also make sure you used the right commands to flash the recovery, and use OrangeFox or Peter's.

Problems Rooting Blackview BV5500Pro

Hi there. I got trouble rooting my Blackview BV5500Pro with Android 9.0
Its not the first smartphone im rooting, so im not new to this. But im also not a professional or something, even english is not my native language so sorry for my bad grammar.
At first i tried the way i done this bevore to my smartphones:
1. Unlock OEM via Fastboot
2. Flash TWRP 3.3.0 (The only working twrp i found) to Recovery
3. Boot into TWRP.
To this point everything works fine.
But when i install Magisk 21.4. i get a bootloop.
also when i install SuperSu 2.8.2
So i tried to patch the boot image via Magiskmanager App 8.0.7.. Everything works fine. I can flash the patched boot image via fastboot, twrp or sp flash tool. But when i open Magisk after booting the patched image, there is no option to install Magisk or root the Phone. Only to patch the boot image. Even when i boot the patched image directly with fastboot.
Maybe somone here can help me.
Best regards, Jules.
Edit: I Also treid to install Liniage OS 17 and 18. Via fastboot, twrp and sp flash tool, but also get a bootloop.

Hi
I'm sorry, I cant't answer your question, but I have one to you: I'm trying to install LineageOS on a bv5500pro too (by the guide from here), but I'm stuck at the TWRP installation. Can you tell me how you managed to do it and do you have perhaps a link to the TWRP you used?
I did unlock the bootloader by toggling OEM Unlock in developer settings, then via fastboot: fastboot flashing unlock. Then reboot.
Then I pushed TWRP 3.2 (from this source here, from the tutorial here) by fastboot flash recovery recovery.img. When I tried then to boot directly after flashing into twrp recovery by holding vol up + power, then selecting recovery mode and confirming with vol down, it tries to boot normally instead of recovery. I think, my TWRP flashing didn't work properly. Booting into TWRP by fastboot boot recovery.img doesn't work either, there it reboots and tries to boot normally too. fastboot tells me that it loses connection (normal, since my phone reboots, I think?):
Code:
fastboot boot recovery.img
downloading 'boot.img'...
OKAY [ 1.017s]
booting...
FAILED (status read failed (No such device))
finished. total time: 23.457s
What I have to confess, is that I did wipe the system, data and cache partitions using fastboot erase <partition>, perhaps someone knows if I have problems with twrp because of that? (I know that I shouldn't have done this, sometimes curiosity is equal to stupidity...) I did this because I tried to install LineageOS without twrp. Was a bad idea, I know now...
I am on a HP proBook using Debian 10 with adb and fastboot installed. Not sure if MK65xx drivers are installed. Might this pose problems?
Thanks in advance to all here!
EDIT: Sorry, I forgot to mention a lot of things. I corrected some of them here. A more complete overview in another post can be found here.

hi, at least im not alone having trouble with the BV5500pro. I don't remember where i got the twrp exactly, but i uploaded it for you.
File-Upload.net - recovery-verified.rar
Datei: recovery-verified.rar. Die Datei wurde von einem User hochgeladen. Laden Sie auch kostenlos Dateien hoch mit File Upload.
www.file-upload.net
At first i flashed TWRP with fastboot. But then everytime i could boot in twrp only one time. After the next reboot the stock Recovery was reinstalled. So i used the Stock images
Blackview BV5500 Pro factory firmware (flash file)
This Blackview BV5500 Pro firmware flash file (stock ROM) can help you easily un-brick or restore your device to its default or factory state. If you have previously rooted or modified the system (or other) partition of the phone in any way, flashing this stock ROM will overwrite all existing...
www.leakite.com
and replaced the recovery-verified.img with the TWRB image and fashed everyting wit sp flashtool on my phone. After that TWRP was permanent.

Ok, great, thanks for your fast reply. I'll try it again with your image.
GiRonimoon said:
At first i flashed TWRP with fastboot. But then everytime i could boot in twrp only one time. After the next reboot the stock Recovery was reinstalled.
Click to expand...
Click to collapse
How did you boot into TWRP then? By Volume up + power, then selecting recovery mode and confirm with vol down? or by terminal/fastboot command?
edit: small grammar

By Volume up + power.

Thank you
Ok, quick update: Flashing worked, but reboot not, I think. I managed to boot into TWRP, but I managed too once with my image before (I forgot to mention), where the screen was then not responding. A complete description of my case can be found here on xda. Sorry for the late corrections that are made in this post, I'll correct them above...
Now after the flash with the image from GiRonimoon above, I can boot into TWRP and the TWRP start screen shows: TWRP Recovery Project 3.3.0-by *nemo-nemo* (4pda.ru), and when I'm in, the screen is not responding. It was like this with my first TWRP image too, so perhaps the flashing didn't work and I have still my old image which is not working?
GiRonimoon said:
By Volume up + power.
Click to expand...
Click to collapse
Ok. But when I boot into recovery, the exact things I do is:
1. phone powered off
2. Hold volume up + power until boot mode selection screen appears
3. Select recovery mode with volume up, then confirm with volume down
4. the phone reboots (screen goes black for about 1 sec), Blackview logo is shown (as well as a 'orange state' warning message), 5 sec delay because of orange state.
5. screen goes black for 1/2 sec
6. TWRP is open, screen not responding, asking for password for decryption
Exactly the same for booting into recovery via terminal/fastboot (just insert fastboot command at 1.). So since the phone reboots once in between, is it possible that my new TWRP is erased every time? Do your BV5500pro behaves also like this (except the orange state, I think)?
Thanks in advance

How long you are waiting? In my case TWRP needs a long time to start. At first i was thinking that it freezes at startup.
I just foubnd out that every boot into twrp causes a boot loop.. Even when i just boot twrp to see the versionnumber, and then reboot normaly.

GiRonimoon said:
How long you are waiting? In my case TWRP needs a long time to start. At first i was thinking that it freezes at startup.
I just foubnd out that every boot into twrp causes a boot loop.. Even when i just boot twrp to see the versionnumber, and then reboot normaly.
Click to expand...
Click to collapse
When I manage to boot into TWRP it's rather fast - I have to wait around 7 sec or so, maybe 10. But I only manage sometimes. Normally I have to do fastboot boot recovery.img, and after that do the normal steps to boot into recovery. If I try to boot into recovery, it just tries to boot normally (which ends in a bootloop)...
But I think I'll try to flash a stock rom and retry from there, as it was suggested here.