[Q] USB Driver disconnects - Android Q&A, Help & Troubleshooting

Hello,
My phone is Star N800 MTK6575.
I have installed MTK65XX MediaTek Preloader Driver.
When I plug in my phone in the USB, when it's turn off and without the battery, I see it in the Device Manager appearing and then disconnecting.
I tried to change the Power Settings but it didn't help. Anyone faced this problem in the past ?

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

[Q] USB Driver disconnects

Hello,
My phone is Star N800 MTK6575.
I have installed MTK65XX MediaTek Preloader Driver.
When I plug in my phone in the USB, when it's turn off and without the battery, I see it in the Device Manager appearing and then disconnecting.
I tried to change the Power Settings but it didn't help. Anyone faced this problem in the past and knows how to fix it?

[Q] Lenovo P780 4GB NOT BOOTING

Hi all, I have a Lenovo P780 4GB that I flashed successfully with SPFT, P780_S125_130529 ROM from needrom.com. from there the phone will not boot but I can see is a red led charging light glowing while connecting it to a computer or charger. The device is not getting recognized by VCOM drivers so no use with flash tool any more. the only thing I see from Device manager is Alcatel Single RNDIS Interface #2. when I plug the phone to the computer I can hear the device connected/disconnected sound, Tried to reboot in to recovery and meta mode but the phone simply does not turn on. Anyone knows how to fix this problem?
Is there any other way I can get the device to change modes or rather a way to get it to be recognized by the PC?
a solution to fix the device will be the best.
Thanx for the help

Phone keeps getting reconnected via USB cable

Hello,
My phone is turned off and when I connect it with my laptop (same with my PC) it keeps getting disconnected and reconnected. My phone is ZTE Blade Q Maxi.
First, I thought that the problem was my USB cable or USB slot, but in the end, they're okay. The drivers I have installed on my laptop are following: Android ADB interface, DA USB VCOM Port, Gadget Serial (there's probably more, but they're seperated in categories). I noticed when I connect my phone, 1 driver appears - Preloader USB VCom port, about 2 seconds becauses instantly it gets disconnected.
Currently, my phone is bricked, but I've had this issue before.
Any help would be highly appreciated.
Thanks in advance!

Bricked Karbonn sparkle v

I was installing software in my device by odin suddenly the cable is detach and my device nothing is happening in my device
only shows a black screen.
when i connect my device to pc it connect and disconnect automatically after 2 sec.
I install all usb software and preloaders still device is connecting and disconnecting.
I also use sp tool to download preloader nothing happen.
remove baterry insert battery.
change pc,laptop,usb cables. noting happen . can anybody help me ????:silly::silly:

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