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Hovatek Forum MOBILE Android BV4900 Pro black screen after systemupdate

BV4900 Pro black screen after systemupdate

BV4900 Pro black screen after systemupdate

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WalZe08
WalZe08
WalZe08
Enthusiastic Member
13
23-01-2023, 01:54 PM
#1



Hello everybody!
I tried to get help by [/url][url=https://forum.xda-developers.com/t/bv4900-pro-systemupdate-and-brick.4535221/#post-87923855]xda-forum but sadly did not. Now it is my second scream for help - on this forum.
I have a rooted blackview BV4900 pro. On 28 of December 2022 I get the message, that a systemupdate is there and it can be installed.
I did not unroot my phone or anything else - I did not think at that moment about that.
So after the file of 2,48 GB was downloaded the installation started, the phone rebooted, there was a white circle in the middle and progress-bar underneath. So the installation was almost completed - I did not look at the screen till the end. Then the screen was black - and I thought the new start will come now and waited for it. But after 5 or maybe 10 minutes did not happened anything. The power-button or other buttons do not bring anything. The screen is black, the phone does not vibrate - but the led light in red when I connect the device to charger or pc. On pc comes the sound, on device-manager I see on COM-Port my phone. It connects/disconnects all the time. And I cannot flash it with sp flash tool, it comes the error that means my phone was not switched off. I think, to flash the stock boot-image will be enough to solve the problem.
What can I do now?
How can I revive the phone?
justshez
justshez
justshez
Senior Member
2,505
24-01-2023, 05:17 PM
#2
(23-01-2023, 01:54 PM)WalZe08 Hello everybody!
I tried to get help by [/url][url=https://forum.xda-developers.com/t/bv4900-pro-systemupdate-and-brick.4535221/#post-87923855]xda-forum but sadly did not. Now it is my second scream for help - on this forum.
I have a rooted blackview BV4900 pro. On 28 of December 2022 I get the message, that a systemupdate is there and it can be installed.
I did not unroot my phone or anything else - I did not think at that moment about that.
So after the file of 2,48 GB was downloaded the installation started, the phone rebooted, there was a white circle in the middle and progress-bar underneath. So the installation was almost completed - I did not look at the screen till the end. Then the screen was black - and I thought the new start will come now and waited for it. But after 5 or maybe 10 minutes did not happened anything. The power-button or other buttons do not bring anything. The screen is black, the phone does not vibrate - but the led light in red when I connect the device to charger or pc. On pc comes the sound, on device-manager I see on COM-Port my phone. It connects/disconnects all the time. And I cannot flash it with sp flash tool, it comes the error that means my phone was not switched off. I think, to flash the stock boot-image will be enough to solve the problem.
What can I do now?
How can I revive the phone?
Upload the screenshot you get when flashing with SP Flashtool
WalZe08
WalZe08
WalZe08
Enthusiastic Member
13
25-01-2023, 09:58 AM
#3
(24-01-2023, 05:17 PM)Abdulakeem14
(23-01-2023, 01:54 PM)WalZe08 Hello everybody!
I tried to get help by [/url][url=https://forum.xda-developers.com/t/bv4900-pro-systemupdate-and-brick.4535221/#post-87923855]xda-forum but sadly did not. Now it is my second scream for help - on this forum.
I have a rooted blackview BV4900 pro. On 28 of December 2022 I get the message, that a systemupdate is there and it can be installed.
I did not unroot my phone or anything else - I did not think at that moment about that.
So after the file of 2,48 GB was downloaded the installation started, the phone rebooted, there was a white circle in the middle and progress-bar underneath. So the installation was almost completed - I did not look at the screen till the end. Then the screen was black - and I thought the new start will come now and waited for it. But after 5 or maybe 10 minutes did not happened anything. The power-button or other buttons do not bring anything. The screen is black, the phone does not vibrate - but the led light in red when I connect the device to charger or pc. On pc comes the sound, on device-manager I see on COM-Port my phone. It connects/disconnects all the time. And I cannot flash it with sp flash tool, it comes the error that means my phone was not switched off. I think, to flash the stock boot-image will be enough to solve the problem.
What can I do now?
How can I revive the phone?
Upload the screenshot you get when flashing with SP Flashtool

Hello Abdulakeem14!
This is the message from sp flash tool and the discription.
Attached Files
.jpg
sp flash.jpg
Size: 30.42 KB / Downloads: 8
.jpg
Error.jpg
Size: 36.58 KB / Downloads: 8
justshez
justshez
justshez
Senior Member
2,505
26-01-2023, 10:52 AM
#4
(25-01-2023, 09:58 AM)WalZe08
(24-01-2023, 05:17 PM)Abdulakeem14
(23-01-2023, 01:54 PM)WalZe08 Hello everybody!
I tried to get help by [/url][url=https://forum.xda-developers.com/t/bv4900-pro-systemupdate-and-brick.4535221/#post-87923855]xda-forum but sadly did not. Now it is my second scream for help - on this forum.
I have a rooted blackview BV4900 pro. On 28 of December 2022 I get the message, that a systemupdate is there and it can be installed.
I did not unroot my phone or anything else - I did not think at that moment about that.
So after the file of 2,48 GB was downloaded the installation started, the phone rebooted, there was a white circle in the middle and progress-bar underneath. So the installation was almost completed - I did not look at the screen till the end. Then the screen was black - and I thought the new start will come now and waited for it. But after 5 or maybe 10 minutes did not happened anything. The power-button or other buttons do not bring anything. The screen is black, the phone does not vibrate - but the led light in red when I connect the device to charger or pc. On pc comes the sound, on device-manager I see on COM-Port my phone. It connects/disconnects all the time. And I cannot flash it with sp flash tool, it comes the error that means my phone was not switched off. I think, to flash the stock boot-image will be enough to solve the problem.
What can I do now?
How can I revive the phone?
Upload the screenshot you get when flashing with SP Flashtool

Hello Abdulakeem14!
This is the message from sp flash tool and the discription.

Disconnect and reconnect the battery, then try again.
If that doesn't work, then flash with MTK Client @ https://www.hovatek.com/forum/thread-40866.html
WalZe08
WalZe08
WalZe08
Enthusiastic Member
13
26-01-2023, 11:26 AM
#5



The battery cannot be disconnect. The device cannot be opened. I will try tomorrow with the MTK Client.
WalZe08
WalZe08
WalZe08
Enthusiastic Member
13
26-01-2023, 05:49 PM
#6
And with MTK Client is it false:
This is, what I see in cmd:
Port - Device detected Smile
Preloader - CPU: MT6765/MT8768t(Helio P35/G35)
Preloader - HW version: 0x0
Preloader - WDT: 0x10007000
Preloader - Uart: 0x11002000
Preloader - Brom payload addr: 0x100a00
Preloader - DA payload addr: 0x201000
Preloader - CQ_DMA addr: 0x10212000
Preloader - Var1: 0x25
Preloader - Disabling Watchdog...
Preloader - HW code: 0x766
Preloader - Target config: 0x0
Preloader - SBC enabled: False
Preloader - SLA enabled: False
Preloader - DAA enabled: False
Preloader - SWJTAG enabled: False
Preloader - EPP_PARAM at 0x600 after EMMC_BOOT/SDMMC_BOOT: False
Preloader - Root cert required: False
Preloader - Mem read auth: False
Preloader - Mem write auth: False
Preloader - Cmd 0xC8 blocked: False
Preloader - Get Target info
Preloader - BROM mode detected.
Preloader - HW subcode: 0x8a00
Preloader - HW Ver: 0xca00
Preloader - SW Ver: 0x0
Preloader - ME_ID: BA1D6AA38A5383D1A9CEE03ECDE9B0C6
Preloader - SOC_ID: B6947756592B9A5C41756320EA415191BBF1356EC730FD6A7136C574748B517B
DA_handler - Device is unprotected.
DA_handler - Device is in BROM-Mode. Bypassing security.
PLTools - Loading payload from mt6765_payload.bin, 0x264 bytes
PLTools - Kamakiri / DA Run
Kamakiri - Trying kamakiri2..
Kamakiri - Done sending payload...
PLTools - Successfully sent payload: C:\Users\xxxxx\Desktop\mtkclient-main\mtkclient\payloads\mt6765_payload.bin
Port - Device detected Smile
DA_handler
DA_handler - [LIB]: ?[33mDevice is in BROM mode. No preloader given, trying to dump preloader from ram.?[0m
DAXFlash - Uploading xflash stage 1 from MTK_AllInOne_DA_5.2136.bin
xflashext - Patching da1 ...
Mtk - Patched "Patched loader msg" in preloader
xflashext
xflashext - [LIB]: ?[33mError on patching da1 version check...?[0m
Mtk - Patched "Patched loader msg" in preloader
Mtk - Patched "get_vfy_policy" in preloader
xflashext - Patching da2 ...
DAXFlash - Successfully uploaded stage 1, jumping ..
Preloader - Jumping to 0x200000
Preloader - Jumping to 0x200000: ok.
DAXFlash
DAXFlash - [LIB]: ?[31mxread error: unpack requires a buffer of 12 bytes?[0m
DAXFlash
DAXFlash - [LIB]: ?[31mError jumping to DA: -1?[0m
hovatek
hovatek
hovatek
Administrator
49,851
30-01-2023, 04:01 PM
#7
(26-01-2023, 05:49 PM)WalZe08 And with MTK Client is it false:
This is, what I see in cmd:

Run this command in mtk client

Code:

py -3 mtk payload

Then flash the firmware in SP flash tool

Note!
We have a reply schedule for Free Support. Please upgrade to Private Support if you can't wait.
WalZe08
WalZe08
WalZe08
Enthusiastic Member
13
31-01-2023, 06:58 PM
#8
t is just very frustrating.
I've got this message on mtk client:
C:\Users\xxxx\Desktop\mtkclient-main>py -3 mtk payload
MTK Flash/Exploit Client V1.6.1 © B.Kerler 2018-2023

Preloader - Status: Waiting for PreLoader VCOM, please connect mobile
Port - Device detected Smile
Preloader -    CPU:                    MT6765/MT8768t(Helio P35/G35)
Preloader -    HW version:            0x0
Preloader -    WDT:                    0x10007000
Preloader -    Uart:                  0x11002000
Preloader -    Brom payload addr:      0x100a00
Preloader -    DA payload addr:        0x201000
Preloader -    CQ_DMA addr:            0x10212000
Preloader -    Var1:                  0x25
Preloader - Disabling Watchdog...
Preloader - HW code:                    0x766
Preloader - Target config:              0x0
Preloader -    SBC enabled:            False
Preloader -    SLA enabled:            False
Preloader -    DAA enabled:            False
Preloader -    SWJTAG enabled:        False
Preloader -    EPP_PARAM at 0x600 after EMMC_BOOT/SDMMC_BOOT:  False
Preloader -    Root cert required:    False
Preloader -    Mem read auth:          False
Preloader -    Mem write auth:        False
Preloader -    Cmd 0xC8 blocked:      False
Preloader - Get Target info
Preloader - BROM mode detected.
Preloader -    HW subcode:            0x8a00
Preloader -    HW Ver:                0xca00
Preloader -    SW Ver:                0x0
Preloader - ME_ID:                      BA1D6AA38A5383D1A9CEE03ECDE9B0C6
Preloader - SOC_ID:                    B6947756592B9A5C41756320EA415191BBF1356EC730FD6A7136C574748B517B
PLTools - Loading payload from mt6765_payload.bin, 0x264 bytes
PLTools - Kamakiri / DA Run
Kamakiri - Trying kamakiri2..
Kamakiri - Done sending payload...
PLTools - Successfully sent payload: C:\Users\xxxx\Desktop\mtkclient-main\mtkclient\payloads\mt6765_payload.bin

And then try to flash with sp flash tool.
The connection ist 100%.
But it happens nothing.
After 2:05 minutes is this message,  And it is the same, if I connect over USB Port or over UART.
See attachment.
Attached Files
.jpg
message.jpg
Size: 80.17 KB / Downloads: 4
hovatek
hovatek
hovatek
Administrator
49,851
09-02-2023, 08:15 AM
#9
(31-01-2023, 06:58 PM)WalZe08 t is just very frustrating.
I've got this message on mtk client:
C:\Users\xxxx\Desktop\mtkclient-main>py -3 mtk payload
..

And then try to flash with sp flash tool.
The connection ist 100%.
But it happens nothing.
After 2:05 minutes is this message,  And it is the same, if I connect over USB Port or over UART.
See attachment.

You're supposed to choose USB auto detect not UART. Also, you don't need to disconnect after running that command in mtk client

Note!
We have a reply schedule for Free Support. Please upgrade to Private Support if you can't wait.
WalZe08
WalZe08
WalZe08
Enthusiastic Member
13
09-02-2023, 10:30 AM
#10
Yes, I do it so. But no success.
How can I "disconnect" the battery without opening the smartphone? With a special wire?
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