Bricked MTK phone keeps reconnecting - Android Q&A, Help & Troubleshooting

Hello I have a chinese Huawei TAG-TL00 phone which I bricked by flashing wrong ROM. Now I have the correct flash file but my phone keeps disconnecting and reconnecting when connect it via USB. In SP flash tool after I click download and connect my phone after 4 seconds the phone disconnects automatically. I have tried numerous MTK drivers and also change USB cable, port and PC too. Nothing has worked. Please help me!!!

ashrafuzzaman16 said:
Hello I have a chinese Huawei TAG-TL00 phone which I bricked by flashing wrong ROM. Now I have the correct flash file but my phone keeps disconnecting and reconnecting when connect it via USB. In SP flash tool after I click download and connect my phone after 4 seconds the phone disconnects automatically. I have tried numerous MTK drivers and also change USB cable, port and PC too. Nothing has worked. Please help me!!!
Click to expand...
Click to collapse
Is the phone in bootloader mode? Make sure it is because it might be just in a bootloop.

nkomarn said:
Is the phone in bootloader mode? Make sure it is because it might be just in a bootloop.
Click to expand...
Click to collapse
No, I did not know before but the bootloader is locked and the phone is not booting at all.

ashrafuzzaman16 said:
Hello I have a chinese Huawei TAG-TL00 phone which I bricked by flashing wrong ROM. Now I have the correct flash file but my phone keeps disconnecting and reconnecting when connect it via USB. In SP flash tool after I click download and connect my phone after 4 seconds the phone disconnects automatically. I have tried numerous MTK drivers and also change USB cable, port and PC too. Nothing has worked. Please help me!!!
Click to expand...
Click to collapse
Spoiler: What I'm going to say won't help you!
I've had that myself! The micro-USB slot on your phone is possibly damaged. For getting that fixed, you'll either have to quickly push in the USB cable and hold it there for a while until it is detected. The sad thing is, if pushing in the USB cable in any way doesn't help then the way to go is some service.
If you're lucky enough, then it may indeed be a driver issue. Please share your OS version and your architecture so that I could be of some more help - other than scaring you!
---------- Post added at 02:00 PM ---------- Previous post was at 01:56 PM ----------
ashrafuzzaman16 said:
Hello I have a chinese Huawei TAG-TL00 phone which I bricked by flashing wrong ROM. Now I have the correct flash file but my phone keeps disconnecting and reconnecting when connect it via USB. In SP flash tool after I click download and connect my phone after 4 seconds the phone disconnects automatically. I have tried numerous MTK drivers and also change USB cable, port and PC too. Nothing has worked. Please help me!!!
Click to expand...
Click to collapse
Wait wait wait - have you installed the VCOM drivers?

BusinessKid said:
Spoiler: What I'm going to say won't help you!
I've had that myself! The micro-USB slot on your phone is possibly damaged. For getting that fixed, you'll either have to quickly push in the USB cable and hold it there for a while until it is detected. The sad thing is, if pushing in the USB cable in any way doesn't help then the way to go is some service.
If you're lucky enough, then it may indeed be a driver issue. Please share your OS version and your architecture so that I could be of some more help - other than scaring you!
---------- Post added at 02:00 PM ---------- Previous post was at 01:56 PM ----------
Wait wait wait - have you installed the VCOM drivers?
Click to expand...
Click to collapse
Android 5 and ARM MT6753T @ 1.50 GHz 1 processor, 8 coresARM implementer 65 variant 0 part 3331 revision 4 and yes I did install numerous VCOM drivers even updated manually in the few seconds the phone keeps connected.

Related

[Q] Computer wont recognize device.

My computer won't recognize my gs4. I have the latest drivers installed and have re-installed many times. The only thing it does when I plug it in is charge. It sometimes says windows is searching for the latest driver when I plug it in, but it then it then says it was unplugged. ODIN did manage recognize it once and that was enough for me too root it and then flash the stock kernel back on. My phone then soft-bricked at the padlock after some rom flashing and I had to go to my friends house to flash it back to stock. Is there anything else I can do?
Am I the only one with this problem?
Does it give you the error "USB device not recognized"? If so there are some fixes for it. I fixed my friends when I sold him my S3. His PC did it.
Yes, a couple of times it did that. Now it just does nothing.
If you try and remove the device from your device manager does it do anything?
Right click on computer and go to properties to get to the device manager.
What would it be named? I looked through all the usb stuff and everything else and couldn't find anything that would be my device.
d03p3yy said:
What would it be named? I looked through all the usb stuff and everything else and couldn't find anything that would be my device.
Click to expand...
Click to collapse
It would be any device with a yellow Triangle and an Exclamation point on it. Also uninstall KIES and your Samsung USB drivers, then reboot. Get updated USB drivers from the S4 link in my signature.
It did the same thing and game me the unknown device thing. It also said that the device malfunctioned. I guess ill just try again.
d03p3yy said:
It did the same thing and game me the unknown device thing. It also said that the device malfunctioned. I guess ill just try again.
Click to expand...
Click to collapse
Ok let's try this fix first.
1. Remove phone from PC and shutdown and remove battery to shut off phone.
2. Plug USB cable into PC and phone.
3. Put battery back in and boot phone but…
4. As the phone boots, hold down Volume up and down and don't let go until you see you are in safe mode on the phone. It should say safe mode on the front screen.
5. This should reboot your phone into download mode and install drivers that are needed.
6. Your PC will indicate and recognize the phone.
7. Now if you check the notification drop down on your phone you should see USB/MTP options there in the notification area. MTP should be checked.
Still no luck. Maybe later I will re-install windows or just re install every driver on my computer.
The other fix to try is listed below.
1. Uninstall any previous instance of Kies/USB driver
2. Download the latest Kies, specific to your S3.
3. Download Samsung USB drivers 1.4.6.0 (I've tried newer versions but they all failed)
4. REBOOT
5. Disconnect from internet (VERY IMPORTANT!!! - forcing Windows to install local drivers ONLY)
6. With the phone disconnected, install Kies + USB drivers downloaded in steps 2,3
7. Connect the phone and let Windows install the drivers.
8. Reestablish the internet connection.
---------- Post added at 08:33 PM ---------- Previous post was at 08:31 PM ----------
If that doesn't work PM my your system specs IE RAM, CPU, and HDD Space and current OS.
The computer doesn't do anything when I plug the phone in. The only thing that starts to happen is that the phone starts charging.
d03p3yy said:
The computer doesn't do anything when I plug the phone in. The only thing that starts to happen is that the phone starts charging.
Click to expand...
Click to collapse
Send me the PM with the requested info.
I'm not really requesting anymore info. I am just going to re install windows because I have done so much stuff to this install that it is time for a new one.
Bump
Any luck? My computer won't recognize my phone either anymore.
PeterifficX said:
Bump
Any luck? My computer won't recognize my phone either anymore.
Click to expand...
Click to collapse
have you done the simpliest thing like reboot your computer?
PeterifficX said:
Bump
Any luck? My computer won't recognize my phone either anymore.
Click to expand...
Click to collapse
My experience with the "Device Malfunctioned" thing was due to a bad cable. It would charge, but wouldn't allow me to connect.
You might also try a different USB port on your computer. Often times the connectors on the back of a desktop system, which are hardwired to the motherboard, work more reliably than the front ones.

[Q] Help!!!!!!!!

:crying: Guys , my SP Flash Tool keep stucking at "100%RedBar" and "0%" . I can't flash anything... :crying: Help me pls...
tngultimate said:
:crying: Guys , my SP Flash Tool keep stucking at "100%RedBar" and "0%" . I can't flash anything... :crying: Help me pls...
Click to expand...
Click to collapse
What are tryng to flash?
Sent from my Lenovo P780
stympy said:
What are tryng to flash?
Sent from my Lenovo P780
Click to expand...
Click to collapse
Lenovo P780 stock rom s124
tngultimate said:
Lenovo P780 stock rom s124
Click to expand...
Click to collapse
Use spflash tool 5 not 3. In spflash tool 5 select firmware upgrade not download.
Try and tel me if works.
Sent from my Lenovo P780
stympy said:
Use spflash tool 5 not 3. In spflash tool 5 select firmware upgrade not download.
Try and tel me if works.
Sent from my Lenovo P780
Click to expand...
Click to collapse
It keep saying "Unrecognized Rom" detected
tngultimate said:
It keep saying "Unrecognized Rom" detected
Click to expand...
Click to collapse
Soo.. Sp flash tool 3 is telling you the same thing ?
Sent from my Lenovo P780
stympy said:
Soo.. Sp flash tool 3 is telling you the same thing ?
Sent from my Lenovo P780
Click to expand...
Click to collapse
sp flash tool 3 just stuck at red bar or 0 %...
tngultimate said:
sp flash tool 3 just stuck at red bar or 0 %...
Click to expand...
Click to collapse
Use spflash tool 3 open the back of your phone and press the red button on your right for 20 secconds after yo pressed firmware upgrade button abd pluged your cable.
Sent from my Lenovo P780
stympy said:
Use spflash tool 3 open the back of your phone and press the red button on your right for 20 secconds after yo pressed firmware upgrade button abd pluged your cable.
Sent from my Lenovo P780
Click to expand...
Click to collapse
Also stuck at 0% ... but the time keep increasing . After 40 seconds , it appear a message says
BROM ERROR : S_FT_READBACK_FAIL (4009)
tngultimate said:
Also stuck at 0% ... but the time keep increasing . After 40 seconds , it appear a message says
BROM ERROR : S_FT_READBACK_FAIL (4009)
Click to expand...
Click to collapse
Hi. Lets try this: since "Firmware Upgrade" or "Download" option dont work, first "Format---->Auto Format Whole NAND flash", then flash ROM using "Download" option with "DA/DL all" selected !!!
Tell me if works.
stympy said:
Hi. Lets try this: since "Firmware Upgrade" or "Download" option dont work, first "Format---->Auto Format Whole NAND flash", then flash ROM using "Download" option with "DA/DL all" selected !!!
Tell me if works.
Click to expand...
Click to collapse
My phone now doesn't detected by my computer... It can connect to computer yesterday... Now my phone just charging when connect to computer... Save me please :crying::crying:
tngultimate said:
My phone now doesn't detected by my computer... It can connect to computer yesterday... Now my phone just charging when connect to computer... Save me please :crying::crying:
Click to expand...
Click to collapse
Follow this steps:
1. Go to My computer>Right Click> Properties> Device manager>Universal Serial Bus Controller
2. Now plug the cable in your device.
3. Tell me what appears there.
stympy said:
Follow this steps:
1. Go to My computer>Right Click> Properties> Device manager>Universal Serial Bus Controller
2. Now plug the cable in your device.
3. Tell me what appears there.
Click to expand...
Click to collapse
I have the exact same issue. Flashing stock S124 after (rooted) S223 with SpTools messes something up.
I managed to do a TWRP restore to go back to S221 but I can't use SpTools anymore.
I get the same SpTools error message. Only after pressing the red reset button my phone will then come back to life.
stympy said:
Follow this steps:
1. Go to My computer>Right Click> Properties> Device manager>Universal Serial Bus Controller
2. Now plug the cable in your device.
3. Tell me what appears there.
Click to expand...
Click to collapse
Nothing happen...
londondutch said:
I have the exact same issue. Flashing stock S124 after (rooted) S223 with SpTools messes something up.
I managed to do a TWRP restore to go back to S221 but I can't use SpTools anymore.
I get the same SpTools error message. Only after pressing the red reset button my phone will then come back to life.
Click to expand...
Click to collapse
Your preloader seems to be messet up. I have one problem the same like yours yesterday. It took like 4 hours to solve the problem. The problem was like this:
The computer was not recognizing the phone when the phone was powered off. Sooo.. what i did: i opened device manager in the computer, then i attached the phone. Something new has appeared in the device manager for a seccond. I clicked fast on it. A small window hass appeared. From this step i was safe. I just updated the driver and that wass it. I could flash the ROM i wanted.
Hope this helps you.
---------- Post added at 03:58 PM ---------- Previous post was at 03:57 PM ----------
tngultimate said:
My phone now doesn't detected by my computer... It can connect to computer yesterday... Now my phone just charging when connect to computer... Save me please :crying::crying:
Click to expand...
Click to collapse
Your preloader seems to be messet up. I have one problem the same like yours yesterday. It took like 4 hours to solve the problem. The problem was like this:
The computer was not recognizing the phone when the phone was powered off. Sooo.. what i did: i opened device manager in the computer, then i attached the phone. Something new has appeared in the device manager for a seccond. I clicked fast on it. A small window hass appeared. From this step i was safe. I just updated the driver and that wass it. I could flash the ROM i wanted.
Hope this helps you.
stympy said:
Your preloader seems to be messet up. I have one problem the same like yours yesterday. It took like 4 hours to solve the problem. The problem was like this:
The computer was not recognizing the phone when the phone was powered off. Sooo.. what i did: i opened device manager in the computer, then i attached the phone. Something new has appeared in the device manager for a seccond. I clicked fast on it. A small window hass appeared. From this step i was safe. I just updated the driver and that wass it. I could flash the ROM i wanted.
Hope this helps you.
---------- Post added at 03:58 PM ---------- Previous post was at 03:57 PM ----------
Your preloader seems to be messet up. I have one problem the same like yours yesterday. It took like 4 hours to solve the problem. The problem was like this:
The computer was not recognizing the phone when the phone was powered off. Sooo.. what i did: i opened device manager in the computer, then i attached the phone. Something new has appeared in the device manager for a seccond. I clicked fast on it. A small window hass appeared. From this step i was safe. I just updated the driver and that wass it. I could flash the ROM i wanted.
Hope this helps you.
Click to expand...
Click to collapse
Thanks for your explanation, you seem to be the absolute guru on this site for this device! I think you are right about the preloader being messed up. I tried to install the USB driver (again) for the new device that the computer now sees. It is listed in the device manager as "Unknown Device" under USB controllers. I can't seem to force it to accept new USB drivers for it (Lenovo drivers). It keeps saying that the driver is not compatible with the device. I use Win 7 64bit, could that have something to do with it? Also is it possible to flash a new preloader using TWRP? If I press the reset button on my phone it reboots fine (rooted S221) and I have TWRP installed.
londondutch said:
Thanks for your explanation, you seem to be the absolute guru on this site for this device! I think you are right about the preloader being messed up. I tried to install the USB driver (again) for the new device that the computer now sees. It is listed in the device manager as "Unknown Device" under USB controllers. I can't seem to force it to accept new USB drivers for it (Lenovo drivers). It keeps saying that the driver is not compatible with the device. I use Win 7 64bit, could that have something to do with it? Also is it possible to flash a new preloader using TWRP? If I press the reset button on my phone it reboots fine (rooted S221) and I have TWRP installed.
Click to expand...
Click to collapse
Here are the drivers i use! Hope this will help you!
Soo.. i never tried to flash preloader from TWRP. Thats an ideea, but you have to do a full backup of your phone... i think...
When i have preloader problems i flash again the whole ROM. I think is safer, better... and wize.
stympy said:
Here are the drivers i use! Hope this will help you!
Soo.. i never tried to flash preloader from TWRP. Thats an ideea, but you have to do a full backup of your phone... i think...
When i have preloader problems i flash again the whole ROM. I think is safer, better... and wize.
Click to expand...
Click to collapse
Thanks for the drivers, I am still struggling to make this "Unknown Device" accept other drivers. What was your unrecognised phone called in Device Manager? Was it also "Unknown Device" in the USB section?
londondutch said:
Thanks for the drivers, I am still struggling to make this "Unknown Device" accept other drivers. What was your unrecognised phone called in Device Manager? Was it also "Unknown Device" in the USB section?
Click to expand...
Click to collapse
Hi. The think was someting like this:
First i installed the .exe file. Reboot PC.
2. I have plugged the phone to the PC and new hardware wizard has appeared.
3. Now i have powered of the phone.
4. Again i have plugged the phone this time powered off.
5. At this time in Device Manager appeared for a second or two not in USB area something with.. MTK65...
6. Click very fast on it because that will desapear very fast.
7. After you clicked on it all you have to do is update driver, and voila you have drivers installed and now all you have to do is to flash you ROM.
Hope this will help you.
Good luck.
Sent from my Lenovo P780
stympy said:
Hi. The think was someting like this:
First i installed the .exe file. Reboot PC.
2. I have plugged the phone to the PC and new hardware wizard has appeared.
3. Now i have powered of the phone.
4. Again i have plugged the phone this time powered off.
5. At this time in Device Manager appeared for a second or two not in USB area something with.. MTK65...
6. Click very fast on it because that will desapear very fast.
7. After you clicked on it all you have to do is update driver, and voila you have drivers installed and now all you have to do is to flash you ROM.
Hope this will help you.
Good luck.
Sent from my Lenovo P780
Click to expand...
Click to collapse
Thanks !!! ^^ Finally I won !!! You are like the proffesion in P780 !!! Stympy , another thing i want to ask you , how to root S223 the rom that you give ? I saw there was an alternative scatter in your S223 .

Lenovo A806 bootloader issue

Hi everyone,
I bought Lenovo A806 from china and wanted to clear the android so I flashed bootloader. After flashing with SP flash tool, phone cannot start.
If I connect it to PC with or without battery, it looks like PC find some device, but in about 30 seconds, it disconnect it and connect again. If I try to flash again, SP tool cannot find the phone.
I don't want to send it to china again, so if someone have any idea, it would be very helpful.
Thank you and Merry Christmas
format again with manual option don't use auto.
same issue
Martasdx said:
Hi everyone,
I bought Lenovo A806 from china and wanted to clear the android so I flashed bootloader. After flashing with SP flash tool, phone cannot start.
If I connect it to PC with or without battery, it looks like PC find some device, but in about 30 seconds, it disconnect it and connect again. If I try to flash again, SP tool cannot find the phone.
I don't want to send it to china again, so if someone have any idea, it would be very helpful.
Thank you and Merry Christmas
Click to expand...
Click to collapse
Same problem here with my phone, you got any solution?
please tell me if you fixed it
---------- Post added at 12:53 AM ---------- Previous post was at 12:46 AM ----------
abgnokia said:
format again with manual option don't use auto.
Click to expand...
Click to collapse
can you elaborate, about addresses ?
I fix it. Try to connect your phone without battery. It will connect with proper drivers (ADB) and you are able to flash bootloader and ROM.
Hey there I'm having the same problem - every time I run flash tool hit download and connect the phone, nothing happens.
I've tried connecting without battery but doesn't seem to make a difference. When phone is on I can connect the phone and is recognised fine but when I turn it off and connect I can hear it connect and then disconnect after 20sec approx.
Please could you give step by step how you got this to work plzzzzzzzz
Thanks
Martasdx said:
I fix it. Try to connect your phone without battery. It will connect with proper drivers (ADB) and you are able to flash bootloader and ROM.
Click to expand...
Click to collapse
Can you share bootloader file for Lenovo A806. Thanks
You can download it here: http://www.needrom.com/download/vibe-ui-2-0-1508-st-multilanguage-deodex/ or browse roms or bootloaders in parent folder.
Step without battery is simple:
unplug phone from PC
install PC drivers
remove battery
connect with USB to PC
After that you should heart sound indication your phone was recognized by PC and You can install bootloader
link of file for Lenovo A806. Thanks
Can you share bootloader and driver file for Lenovo A806. Thanks
Same here..Encounter bootloop after flash official Fw from needrom after search for tutorial..Now stuck on boot with TOOL DL Image fail...Anyone can help??
---------- Post added at 11:10 PM ---------- Previous post was at 10:53 PM ----------
feez909 said:
Same here..Encounter bootloop after flash official Fw from needrom after search for tutorial..Now stuck on boot with TOOL DL Image fail...Anyone can help??
Click to expand...
Click to collapse
Hi..Problem solve..
I try use SP Flash tool 5.14 instead of 5.16.
Found preloader solve.Now able to boot to ROM.Thanks
Hi there, I after trying to flash twrp to my a806 I got stuck with TOOL DL Image fail. I tried sp v5.14,5.16 and 3.something.
Nothing seems to work. Any suggestions.
Sent from my 620G using Tapatalk

Phone wont turn on

i was trying to root my phone so i flash my device with TWRP recovery using Rashr app.
after rebooting my phone storage need format. i rebooted my phone without formatting and then it stuck on boot logo .
then i used SP flash tools for flashing stock recovery but it gave an error and stops and after that my device is not responding to any key combination but my laptop is detecting device when i insert it .
Please help.
Xolo 8X-1000 [battery non removable]
MTK6592M
Need some details
1.What is your phone model?
2.Which chipset your phone have?
3.I guess you have scatter file but how did you get that? from stock rom?
Phone model?
If it detects Preloader of device you are good to go
If not you need full backup of stock rom and install drivers
aravazhi_mdr said:
1.What is your phone model?
2.Which chipset your phone have?
3.I guess you have scatter file but how did you get that? from stock rom?
Click to expand...
Click to collapse
XOLO 8X-1000
MediaTek MTK6592M
and i downloaded stock ROM from androidmtk .com
thank you for your help
Scot can u run device manager and take a screenshot of Com ports when u connect ur device?
arshad145 said:
Scot can u run device manager and take a screenshot of Com ports when u connect ur device?
Click to expand...
Click to collapse
device is detectable by laptop as Mediatek DA USB VCOM port in device manager.
bad ...
It must be detected as preloader mt65xx
Don't panic
1.Disconnect phone take battery out or switch it off
2.Connect device to pc via usb without battery
Post result...
arshad145 said:
bad ...
It must be detected as preloader mt65xx
Don't panick
1.Disconnect phone take battery out or switch it off
2.Connect device to pc via usb without battery
Post result...
Click to expand...
Click to collapse
battery is non removable
switch off phone then...
Disconnect usb then reconnect with phone off
Result?
---------- Post added at 01:07 ---------- Previous post was at 01:06 ----------
And btw wat version of windows running? 7,8,10?

MT6580 device, no booting after unlocking bootloader

Does somebody have any information or encounter about this? The device is a Blu Energy X Plus 2, a back up phone I wanted to experiment with.
-After unlocking bootloader using ADB, phone got stuck at boot logo.
-I forgot to wipe.
-Device is not yet rooted
-After waiting for minutes I have forced the phone to shut down.
-Volume+Power combo, battery is non removable
-Now it wont turn on and respond to any button.
-It charges, as proven by the red light.
-It is somehow detected by the PC using the VCOM drivers. PC makes a sound and MT65xx PreLoader VCOM appears in the Device Manager.
-SP Flash Tool will not start download. Even tried download before plugging in usb, nothing happens.
-Tried many different flash tools versions. 1628, v5, v3, Nothing works. No error message but an error appears when I plug out the USB cord
-BROM Error: S_BROM_CMD_STARTCMD_FAIL(0x7D5)
Cannot pass bootroom start command! Possibly target power up too early.
Hi , maybe your SP Flash tool is not compatible for your chip , so try this one :
https://spflashtool.com/download/SP_Flash_Tool_v5.1628_Win.zip
Search firmware exactly for your device model .
You can use IDM -Internet Dowwnload Manager for fast downloading...
Teddy Lo said:
Hi , maybe your SP Flash tool is not compatible for your chip , so try this one :
https://spflashtool.com/download/SP_Flash_Tool_v5.1628_Win.zip
Search firmware exactly for your device model .
You can use IDM -Internet Dowwnload Manager for fast downloading...
Click to expand...
Click to collapse
I have already tried the 5.1628 version, it is also not working.
The latest version has a bug I think which causes it to have a RUntime error when picking a scatter file.
The old v3 will not accept any scatter file anymore.
Also I have downloaded two versions of stock rom already. First one is 800 mb and the second one is 2GB. Both do not work, but I suspect the first one to completely fail since it had an unmatching scatter file within.
Try this.Hold power button for 2 min if your phone boots up Good News It's usable.If not then It's only crap now.Mediatek devices are not supposed to be rooted and if somehow you managed to do that they will make sure you pay for it.
Sent from my Pixel 3 XL using Tapatalk
Atifbaig786 said:
Try this.Hold power button for 2 min if your phone boots up Good News It's usable.If not then It's only crap now.Mediatek devices are not supposed to be rooted and if somehow you managed to do that they will make sure you pay for it.
Sent from my Pixel 3 XL using Tapatalk
Click to expand...
Click to collapse
I tried it but the device doesnt seem to respond to any button whatsoever. The device is not rooted though, I wanted to flash magisk but it all happened after unlocking the bootloader. But I have hope since the preloader is indeed detected in the PC.
Try to relock bootloader with adb if your device is recognised by ADB ...
Teddy Lo said:
Try to relock bootloader with adb if your device is recognised by ADB ...
Click to expand...
Click to collapse
device is no longer recognized by adb, it wont turn on anymore. Only as MT65xx preloader as it shows in the device manager
helpplease123 said:
device is no longer recognized by adb, it wont turn on anymore. Only as MT65xx preloader as it shows in the device manager
Click to expand...
Click to collapse
Follow this thread maybe is driver issue so read carefully ...
https://forum.xda-developers.com/showthread.php?t=2180436
Good luck
What's up with VCOM?
Well I don't think your PC would be able to detect your device because you haven't got the VCOM drivers yet. Get any VCOM driver for Mediatek, and then disable driver signature enforcing on Windows. Now fire up SPFT and select the scatter use v5.1628 as the newer ones seem to be unstable (also verified by OP). Now choose the Preloader for your device and then enter download mode. Turn off the phone (if you can't, just let it die until the battery is over). And then connect it using an USB cable, while SPFT is in download mode. You should be able to unbrick your device.
And as you said S_BROM_CMD_STARTCMD_FAIL(0x7D5), that is when the device powers up too early before the flash could begin. The 8 byte token is not received by the preloader and hence it ain't working. This is why you have to switch your phone off completely, and also try using a different USB cable
Note:
The preloader parition has an emergency download mode which is used to enable the download to take place. Now, if you flash the wrong preloader, then your device won't even be detected in SPFT or anywhere else. So yeah, in MTK preloader is the life of your phone. Please verify that you are flashing the correct preloader
BusinessKid said:
Well I don't think your PC would be able to detect your device because you haven't got the VCOM drivers yet. Get any VCOM driver for Mediatek, and then disable driver signature enforcing on Windows. Now fire up SPFT and select the scatter use v5.1628 as the newer ones seem to be unstable (also verified by OP). Now choose the Preloader for your device and then enter download mode. Turn off the phone (if you can't, just let it die until the battery is over). And then connect it using an USB cable, while SPFT is in download mode. You should be able to unbrick your device.
And as you said S_BROM_CMD_STARTCMD_FAIL(0x7D5), that is when the device powers up too early before the flash could begin. The 8 byte token is not received by the preloader and hence it ain't working. This is why you have to switch your phone off completely, and also try using a different USB cable
Note:
The preloader parition has an emergency download mode which is used to enable the download to take place. Now, if you flash the wrong preloader, then your device won't even be detected in SPFT or anywhere else. So yeah, in MTK preloader is the life of your phone. Please verify that you are flashing the correct preloader
Click to expand...
Click to collapse
Tried everything here, and I even used a windows 7 pc but it is still not working. The VCOM was already installed, in fact when I plug in the phone windows automatically detects it as the MTK Preloader VCOM USB port(COM13) in the device manager. The VCOM driver that is supposed to be installed leaves an error in the device manager (COM12). SP Flash tool still will not start flashing. No error messages, until I plug out the usb cord.
helpplease123 said:
Tried everything here, and I even used a windows 7 pc but it is still not working. The VCOM was already installed, in fact when I plug in the phone windows automatically detects it as the MTK Preloader VCOM USB port(COM13) in the device manager. The VCOM driver that is supposed to be installed leaves an error in the device manager (COM12). SP Flash tool still will not start flashing. No error messages, until I plug out the usb cord.
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You do see that exclamation right - this means it isn't properly configured
---------- Post added at 01:37 PM ---------- Previous post was at 01:35 PM ----------
helpplease123 said:
Tried everything here, and I even used a windows 7 pc but it is still not working. The VCOM was already installed, in fact when I plug in the phone windows automatically detects it as the MTK Preloader VCOM USB port(COM13) in the device manager. The VCOM driver that is supposed to be installed leaves an error in the device manager (COM12). SP Flash tool still will not start flashing. No error messages, until I plug out the usb cord.
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Looks like it's more of a Windows issue than your phone. If your preloader's good - you're safe. I think it's a COM bridge issue. Just stay on the wait and I'll get back to you in a minute or two
---------- Post added at 01:40 PM ---------- Previous post was at 01:37 PM ----------
I'm working on a batch script for you to fix the COM issue. Would you mind sharing your Windows Version and Architecture?
I'm building it for Windows 7 x64 - if that's your PC?
BusinessKid said:
You do see that exclamation right - this means it isn't properly configured
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Click to collapse
---------- Post added at 01:37 PM ---------- Previous post was at 01:35 PM ----------
I mean the COM13 is fairly OK for the part, its the VCOM that comes from installing the phone. However the COM12 that came from the manual installer had the exclamation point.
Looks like it's more of a Windows issue than your phone. If your preloader's good - you're safe. I think it's a COM bridge issue. Just stay on the wait and I'll get back to you in a minute or two
---------- Post added at 01:40 PM ---------- Previous post was at 01:37 PM ----------
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Its already a great thanks from me for you to even post more than once. thank you so much!
[/COLOR]I'm working on a batch script for you to fix the COM issue. Would you mind sharing your Windows Version and Architecture?
I'm building it for Windows 7 x64 - if that's your PC?
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Yes, in fact I have first tried it in Windows 10 x64 before switching back to this W7 x64 laptop. Same problem same outcome though
So let us go 101
Okay - the first thing that we'd do now is blow off those crappy drivers - uninstall them! Now get on your Windows 10 x64 PC. Install the VCOM drivers from this XDA thread. It's for elephone, however I've used it myself and it works really well on almost any device. Now power off your phone completely (no bootlooop, completely dark screen). Launch SPFT, select scatter, select the correct preloader and then hit on download. Do not connect your phone now! Now wait for 10 seconds. Now connect your phone. And let the download begin. If it works - fantastic, if it doesn't ping me back and I'll be waiting for replying to you. The batch script is almost done (I was doing some kernel work), I'll upload it once I'll be back home (on the way back now).
Fingers crossed :fingers-crossed:
BusinessKid said:
Okay - the first thing that we'd do now is blow off those crappy drivers - uninstall them! Now get on your Windows 10 x64 PC. Install the VCOM drivers from this XDA thread. It's for elephone, however I've used it myself and it works really well on almost any device. Now power off your phone completely (no bootlooop, completely dark screen). Launch SPFT, select scatter, select the correct preloader and then hit on download. Do not connect your phone now! Now wait for 10 seconds. Now connect your phone. And let the download begin. If it works - fantastic, if it doesn't ping me back and I'll be waiting for replying to you. The batch script is almost done (I was doing some kernel work), I'll upload it once I'll be back home (on the way back now).
Fingers crossed :fingers-crossed:
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Click to collapse
Dude holy ****, I cannot believe that it worked! I swear I was very confident that the problem was not in the drivers, but out of luck I started to follow that guide again from start to finish and selected the "MTK USB Port" in the device manager section. Then I plugged in and SP flash tool finally started! You rock!
Your welcome! I'm glad that worked!

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