MediaTek preloader usb vcom port detection problem - Android Q&A, Help & Troubleshooting

Device- karbonn titanium octane plus, rebrands - nibiru mars one H1, walton primo v1
i will try to be as informative as possible.
I found my phone off in my pocket, tried to turn it on but freezes on boot/logo screen for some seconds and displays some random horizontal lines on over the logo screen like it crashed or something.
also charging logo screen(screen before the charging animation screen appears) shows some lines and reboots again to charging logo screen and do not shows charging animation.
i was using stock ROM , I thought i would flash stock ROM again using TWRP(installed earlier) but recovery is not opening.
So I tried connecting to my laptop.
In the past, I've used SP flash tool to flash recoveries, it worked fine.
drivers are fine.
now it rarely detects "MediaTek preloader usb vcom port" like it should be, but mostly it detects "MTK usb port" which is useless and don't works.
flashing works only when "MediaTek preloader usb vcom port" is detected and don't work when "MTK usb port".
when "MTK usb port" is detected, SP flash tool just detects, doesn't do anything and after some seconds shows error "S_DL_GET_DRAM_SETTING_FAIL" and solution "Please check your image to matches with your phone which is to be downloaded." please do not focus here as device should have detected as "MediaTek preloader usb vcom port".
when it rarely detects "MediaTek preloader usb vcom port", the flashing process starts but strucks in the middle and fails.
drivers installed in laptop are correct .
what should i do now ???
any other tools can i use ?

Related

MT6577 preloader recovery

Hi
I flashed the phone with invalid firmware using SP_Flash_Tool.
Now SP_Flash_Tool and Windows doesn't see the MT65xx Preloader USB device after disconnecting/reconnecting the battery.
The phone doesn't switch on.
Is possible to recover a preloader on MTK6577 (Zopo ZP 900) using the flex cables or other methods?
Thank you
I have same situation. Did you find any solution for this?
Hi all,
I accidentlly wipe preloader on my Lenovo P770 and computer identify it as "alcatel single rndis interface #2". Is there any possibility to restore preloader in my phone or it is comlete brick?
I would be very thankful for any help.
Lenovo P770 preloader wiped
my preloader accidentally wiped by my son, now my prealoder appears as ALCATEL.
I can't turn on my phone. Any ideas what to do?
when i install MTK Preloader / Usb driver, when i put the phone and usb on the computer it will disconnect after a few seconds, and connect and disconnects again.
The problem also appearing when i am flashing the phone with FLASHTOOL. That's why i am not able to flash my phone...
Kindly please help me out...
Any idea to help me regarding this problem would be a great help...
Thanks in advance...
Hi there...I am also facing the same problem in my mtk device...I could flash the stock rom from SP flashtool...but after flashing my phone is in dead state...Any Leads..???
I got to the same problem with my phone. There is no chance to turn it on.
Someone has got a suggestion?
Same problem.
We hope that one hero appears here
i will pay for the solution!
MTK6577 Tablet
Hey guys .. any solution ?
Lenovo A2107A-H, Dual SIM dead after SP-Flash
I stand in a row with you all, I also have killed my tablet with SP-Flash, It appears as Alcatel Single RNDIS Interface in Win7 control panel's network adaptors and in Win8.1 as "unknown device". I already uninstalled the drivers, the Win7 needed to reboot after that, but re-installed the same sh** after reconnecting. I have heard about another tool, not SP-Flash, which shall be able to "find" the tablet on the USB bus, but I don't remember the name.
How to un-brick Lenovo P770!
lystor said:
Hi
I flashed the phone with invalid firmware using SP_Flash_Tool.
Now SP_Flash_Tool and Windows doesn't see the MT65xx Preloader USB device after disconnecting/reconnecting the battery.
The phone doesn't switch on.
Is possible to recover a preloader on MTK6577 (Zopo ZP 900) using the flex cables or other methods?
Thank you
Click to expand...
Click to collapse
I un-bricked my Lenovo P770 yesterday!
How to do this:
1) Download and install "MT6577 USB VCOM drivers" -drivers for your phone
2) Open Device manager in your computer. Then "View" and "Show hidden devices" (do not close Device manager)
3) connect your phone to PC by USB cable (without battery, some phone with battery)
4) In device manager, in Network adapter (in my situation, after few second) shows "Alcatel single rndis interface #. . ." - it can appears and disappears!
5) When "Alcatel single rndis interface #. . ." appears click on this device Update drivers->Browse my computer...->Let me pick.. and here you should see "Mt65xx Preloader" if not you should find your driver.
6) When you update this driver you could use Flashtool v3->loading scatter file (you can find your android on needrom website. for example: P770_ROW_S110_130204_707WOW) -> check only PRELOADER and click Download
then connect your phone again to USB (without or with battery) and wait some seconds.
GoodLuck!!!
You can control on needrom website
I have the same issue. mediatek S8 - mt6577 7inch tab

[HELP] [Q] Issues with SP Flash Tool while trying to upgarde ECOO E04 to lollipop

Good day,
I have been having issues with the upgrade of my ECOO E04 3GB to Lollipo, I have downloaded the SpaceROM v1.0.0.0 from needrom. I have installed the preloader drivers for mediatek . When I click download on SP Flash tool and connect my phone, nothing happens. In device manager, it shows "MediaTek PreLoader USB VCOM Port (COM10)" but the ROM is not being flashed. If I disconnect my phone, it gives the "BROM ERROR: S_BROM_CMD_STARTCMD_FAIL (2005)" error. What am I doing wrong? I have checked tutorials and the driver they have usually is "MediaTek DA USB VCOM (COM 37)". I cant seem to find this driver

Bricked my S550

Somehow I have managed to brick my new cubot S550.
I wanted to update the rom so I headed to needarom and downloaded the appropriate rom and followed the instructions but somewhere along the line by pressing the vol keys and the power key the screen has gone black. This was done before I used any flash tools or install any drivers.
when I did plug it into the computer it was initially being seen as an unknown device but now I managed to install some drivers and it shows up as mediatek DA USB VCOM (android) (COM 5) I can install other drivers such as mediatek PreLoader USB VCOM Port and MTK USB Port and they seem to install but only after I untick show compatible hardware. When that is ticked then only mediatek DA USB VCOM shows in the list so I assume the state it is in is mediatek DA USB VCOM (android) (COM 5).
Unfortunately when I follow the instructions on needarom it throws up the error message S_COM_PORT_OPEN Fail(1013) so the flash tool obviously cannot communicate with the phone. This is the same even if I install the drivers as mediatek PreLoader USB VCOM.
The instructions on needarom are sort of wrong anyway because it instructs you to remove the battery etc but it is not a phone that has a removable battery.
I have two main questions.
How can I update the rom or failing that how can I get it off this black screen? I have tried different version of pressing the power button and vol keys and nothing is working.

[HELP] MTK 6572 PreLoader USB VCOM, can't get DA USB VCOM

Hello
Some time ago I decided to flash recovery to my Kazam Trooper X5.5 (MTK 6572) with MTK Droid Tools.
Unfortunatelly, phone got bricked. I went through many threads (not only on XDA) and mostly to unbrick MTK device, PC has to recognize it as MediaTek DA USB VCOM Port. I can't force my PC/phone to connect device as DA USB VCOM and it connects always as MediaTek PreLoader USB VCOM. In some threads I've seen that holding volume up while connecting to PC will make device recognizable as DA USB VCOM. It's not working for me. Also I've seen many cable connection methods - with battery, without battery, plugging cable while holding vol up etc.
The only way I can make my PC recognize mtk device is to disconnect cable, pull off battery, connect cable and place battery back. Now PC recognizes my phone for 2 seconds and disconnects.
I tried to install drivers manually but even if MediaTek DA USB VCOM appears on the list, connected device is recognized as new and it installs PreLoader driver.
Is there any way to force it to connect as MediaTek DA USB VCOM?
Thanks in advance!

Huawei G 730 U 10 Curropt Preloader

Hi,
Before Flashing: - My phone connected to pc as " mediateack usb port" and then is automatically connected as "da usb vcom port" then disconnecte, then mediateack usb port" and then is automatically connected as "da usb vcom port" ----- ------ this process was continuous.
Flushing: - My Huawei G 730 U 10 Dead after wrong Preloader Flush.
After Flashing: - My phone connected to pc as " mediateack usb port" and then nothing happens like disconnecting or other thins like usb vcom port.
Now it always connected as " mediateack usb port" .

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