Database Users

Possible solution for USB error (device unknown in Windows)

Hi all!
On my I9000 4-5 months ago the USB connection to PC went dead (unknown device error in Windows), but the phone was functioning normally. 3 weeks ago the phone frozed completely, and don't even started, was stucked at boot logo. I managed to enter download mode, but since the USB was not recognised, I could not reflash with a new rom. I tried several PC-s, several cables, many many times, with the seame error (unknown device). I sent the phone to the service, even they said that the main panel need to be changed.
Today I had an idea (brilliant!!) to heat the phone with a hairdryer. When it was hot, plugged on the USB cable, and a miracle happened! The laptop recognised instantly the Samsung Android device, and I managed to reflash with odin, and now the phone is working well, even USB is working now!!!
I dont know, maybe this will help anyone who has the same problem. It is worth a try!

Seriously????
Supaplexjozsef said:
Hi all!
On my I9000 4-5 months ago the USB connection to PC went dead (unknown device error in Windows), but the phone was functioning normally. 3 weeks ago the phone frozed completely, and don't even started, was stucked at boot logo. I managed to enter download mode, but since the USB was not recognised, I could not reflash with a new rom. I tried several PC-s, several cables, many many times, with the seame error (unknown device). I sent the phone to the service, even they said that the main panel need to be changed.
Today I had an idea (brilliant!!) to heat the phone with a hairdryer. When it was hot, plugged on the USB cable, and a miracle happened! The laptop recognised instantly the Samsung Android device, and I managed to reflash with odin, and now the phone is working well, even USB is working now!!!
I dont know, maybe this will help anyone who has the same problem. It is worth a try!
Click to expand...
Click to collapse
Well I just hope this is not a joke. Am having th same problem. Am gonna try your solution out.
Thanks

And the hairdryer fried the lint in USB connector?
Using tooth brush could be a safer route to go.

kigordid said:
Well I just hope this is not a joke. Am having th same problem. Am gonna try your solution out.
Thanks
Click to expand...
Click to collapse
Hi, this is NOT A JOKE!!!
The phone is working well since!!!

[Q] USB Problem

Earlier i was trying to flash a custom ROM and i accidentally deleted my whole OS... My problem is that every time i plug in my device it comes out as unrecognized. I have tried installing all the drivers from Nexus Tool Kit and i still get the unrecognized notice. I've tried plugging my device on three different computers and still nothing. I've tried just about everything i could read about in the posts but nothings worked yet. If anyone could please help me with this id really appreciate it!!!

Usb connection options doesn't pop up when connected to PC

I have google this for hours with nothing! I connect my Nexus 6P to my PC and it doesn't recognize it and not only that but the usb connection options doesn't show up on the phone either. I am completely lost!
I have installed the drivers multiple times, i have looked up the mtp inf drivers and nothing happens. When I connect it to the computer it only says chaging on the lockscreen thats it! I have no idea how to fix this. I am trying to go back to stock because i lost root flashing a custom nougat build. everything works except twpt won't boot up anymore and just hangs at the splash screen. and of course I don't have root. can anyone please help me! thanks

117micc said:
I have google this for hours with nothing! I connect my Nexus 6P to my PC and it doesn't recognize it and not only that but the usb connection options doesn't show up on the phone either. I am completely lost!
I have installed the drivers multiple times, i have looked up the mtp inf drivers and nothing happens. When I connect it to the computer it only says chaging on the lockscreen thats it! I have no idea how to fix this. I am trying to go back to stock because i lost root flashing a custom nougat build. everything works except twpt won't boot up anymore and just hangs at the splash screen. and of course I don't have root. can anyone please help me! thanks
Click to expand...
Click to collapse
Have you tried a different cord? If its not the cord the inspect the port on your phone to make sure no lint or crud is physically blocking some pins. Do you have developer options enabled? Maybe something got changed in there. Its never happened to me so these are just guesses. Maybe somebody smarter can help.

117micc said:
I have google this for hours with nothing! I connect my Nexus 6P to my PC and it doesn't recognize it and not only that but the usb connection options doesn't show up on the phone either. I am completely lost!
I have installed the drivers multiple times, i have looked up the mtp inf drivers and nothing happens. When I connect it to the computer it only says chaging on the lockscreen thats it! I have no idea how to fix this. I am trying to go back to stock because i lost root flashing a custom nougat build. everything works except twpt won't boot up anymore and just hangs at the splash screen. and of course I don't have root. can anyone please help me! thanks
Click to expand...
Click to collapse
Mine gives a notification that the phone is charging when I connect to computer but if I click the notification it gives me the option to transfer files instead. You do have USB Debugging enabled on the Developers Menu, correct?

Hello guys
I have the same problem on my phone i tried everything i found on google and other forums, and the last option that i couldn't do is to send my phone to replace the usb port, but i have no warranty as i bought it already used. It's a shame that no one can find a solution here especially that the other forums at least tried to fix for some people but not here on xda which is the first in the world.

driss.sadok said:
Hello guys
I have the same problem on my phone i tried everything i found on google and other forums, and the last option that i couldn't do is to send my phone to replace the usb port, but i have no warranty as i bought it already used. It's a shame that no one can find a solution here especially that the other forums at least tried to fix for some people but not here on xda which is the first in the world.
Click to expand...
Click to collapse
I've even changed my USB port and daughterboard twice. I am stumped. I got 3 laptops 2 running 10 and one running Ubuntu and mAid along with a tower running xp. I fix unfixable phones and resell them. I've tried EVERYTHING. I know this is an old thread but Any help would be appreciated.

MTP not working?

I was recently gifted an S7 Edge that won't seem to connect properly to my PC. It had Marshmellow when I got it, and after some tinkering, attempts, to root, and some bootlooping, I ended up flashing Nougat (g935vvru4bqa2 from Sammobile). My PC can't seem to read files from it (before AND after tinkering). Samsung switch asks me to put it in MTP mode even when it already is, and on the rare occasions I've gotten the memory to show in windows explorer, all the files have no name and I get an error message when I try to open them. I've tried reinstalling android drivers several times to no avail. This is concerning for a few reasons but primarily because I have no way of backing up my phone currently. Any help would be appreciated.
Edit: Interesting development. I hadn't tried the phone with another computer for some reason. It is working fine on my laptop.

Sometimes it can be a usb port I have three on my laptop and only one recognizes my phone or sometime certain usb cables don't have the right specs to flow data back and forth I've had that issue as well
Sent from my SM-G935U using Tapatalk

cannot connect to pc at all

hello I'm really hoping somebody can help me because I'm not getting answers anywhere I've halfway through a course to learn mobile tech repairs and I'm completely stuck on a Samsung SM g925a when trying to remove the FRP. I have written my class instructors and I'm not getting any response. I've downloaded all the drivers from Samsung I've updated them all but however it is not allowing me to connect the device to my PC so I can get it into odin to flash combination files. When I plug the device in to my windows 10 pc I receive a pop up saying the last USB device you connected to this computer malfunctioned and windows does not recognize it and then in device manager when I open it it shows as unknown USB device device descriptor request failed. I tried to download the drivers again reinstalled and updated them and that didn't work. I changed all my cords tried it on every Cord I had and it didn't work, yet these cords recognized other devices I had. I also uninstalled the USB driver and then I ran the hardware troubleshooter still got nothing and then I also disabled fast startup none of this has worked. I also have spent countless hours researching on line and I'm just not getting any answers and I get the same troubleshooting ideas I've already tried however I did come across a program USB debugger r but I don't know if I had just downloaded it wrong or had the wrong firmware files but it wasn't working for me I thought maybe that would help me to connect to PC. I'm still learning and only halfway through the course but it seems like this is such an easy issue that I just can't seem to figure out is there anybody out there willing to help me figure this out please I'm sure something simple Im missing or forgetting but I've been dedicated to this phone and I sure can't figure it out it's stopping me right at the gate. Thanks in advance