Hi guys,
I have a massive problem.
I recently updated to 4.3 rooted etc, after a few days of not using my nexus 7 on the pc I wanted to flash a new rom.
Now my N7 is only shown as an "Unknown Device" in my Device Manager.
I tried to deinstall Drivers, install, everything, I tried every possibilty in Wug's toolkit, nothing worked. I also tried it on another Notebook where i have never connected any mobile device, same message and i'm not able to install the drivers.
I also tried several ports and cables(the original one included)
Here is the message:http://i.imgur.com/tgxOeZQ.jpg
Translation: The optimal driver software for your device is already installed.
After this I flashed back to 4.2.2 (downloaded the rom on my N7) while performing a normal factory reset, I can't wipe everything because then I am not able to flash anything.
So after flashing to 4.2.2 my N7 was shown as a portable device in my device-manager. I then turned on USB-Debugging to stock+unroot, it was then shown again as a Unknown device, in both modes, USB-Debugging turned Off and On.
So now my question, is there a solution to this? I searched for possibilites to get back to stock without USB but most of them were a bit sketchy or had dead links. Please help me (sorry for my bad english)
Edit:
I just the cable of my old Motorola Defy, and it randomly connects and disconnects(still shown as unknown), so basically I think it is possible that my USB plug is broken(it takes about 6 hours to load the battery which I think might be as well a reason for a broken USB plug).
But to send it back to Google I need to Stock Unroot first so here my problem is again!
greetings
Hi, background is this..
I have a D802-10C G2 that i rooted the stock 4.2.2 rom a while back using the post chinese method. Easy enough, all worked fine. no complaints. A couple of weeks ago i got offered the OTA 4.4 update, this failed due to the root. I then removed the root using the feature in super su. that seems to have worked as no apps or file managers etc could get root access. However, the OTA still wont work.
Now my problem is my phone will no longer be recognized by any operating system, on multiple computers. I have tried many ADB drivers, Windows 7 wont even detect the device, i've used every PC connect mode, USB debugging. However always the same result, it's as if i'm plugging in a blank usb cable into the computer. Nothing at all.
The only thing that does happen when i connect the phone to a computer is the phone starts to trickle charge. There is nothing detected in Device Manager in Windows 7 I've tried connecting in download mode, nothing. I've tried the LG support tool, PC sync. Nothing.
WiFi does connect to the PC suite fine BTW and other than that the phone is working perfectly. I've also tried connecting multiple usb cables on multiple ports.
I haven't been able to find a single case of the same problem in the week or so i've been looking. Hoping someone can help, i'm thinking i may have soft bricked my phone. I really do not think this is a driver issue.
Any help would be great. cheers
Paul
+1
i have the same problem plz help
cambies said:
Hi, background is this..
I have a D802-10C G2 that i rooted the stock 4.2.2 rom a while back using the post chinese method. Easy enough, all worked fine. no complaints. A couple of weeks ago i got offered the OTA 4.4 update, this failed due to the root. I then removed the root using the feature in super su. that seems to have worked as no apps or file managers etc could get root access. However, the OTA still wont work.
Now my problem is my phone will no longer be recognized by any operating system, on multiple computers. I have tried many ADB drivers, Windows 7 wont even detect the device, i've used every PC connect mode, USB debugging. However always the same result, it's as if i'm plugging in a blank usb cable into the computer. Nothing at all.
The only thing that does happen when i connect the phone to a computer is the phone starts to trickle charge. There is nothing detected in Device Manager in Windows 7 I've tried connecting in download mode, nothing. I've tried the LG support tool, PC sync. Nothing.
WiFi does connect to the PC suite fine BTW and other than that the phone is working perfectly. I've also tried connecting multiple usb cables on multiple ports.
I haven't been able to find a single case of the same problem in the week or so i've been looking. Hoping someone can help, i'm thinking i may have soft bricked my phone. I really do not think this is a driver issue.
Any help would be great. cheers
Paul
Click to expand...
Click to collapse
YOu can try checking the device manager or use other USB port on your phone.
buenarc said:
YOu can try checking the device manager or use other USB port on your phone.
Click to expand...
Click to collapse
The problem is not like the usual ones you will see about "computer not being able to see device" I don't think it's a driver or software issue, or if it is it's unlike any i have found in the weeks i've been searching the net for a solution. Here's why....
When i connect the phone to Windows 7 and 8 ( on 3 different computers) No hardware is detected, nothing in the Device Manager, no yellow question marks indicating 'Unknown Hardware'. Nothing, all it does is start trickle charging.
Now even with no ADB, or any driver at all installed, the computer should still detect the phone. Mine does not.
The same thing happens using OSX and Linux Mint 16 (again multiple computers) No devices or mounted or volumes shown at all. Linux terminal command "$ lsusb" does not list my hardware.
This is why i'm pretty much convinced that there is something wrong with the USB port on the phone. Because, if Linux can't see it then surely it's a hardware problem right?
The only other thing i can think of is, i have messed up the phones firmware while trying to unroot it? but only because the timing of all this is just too uncanny.
I think i'll have to suck it up and admit defeat here. Funny thing is the phone works perfectly and charges fine.
Stuck on 4.2 , with no ADB functionality. Perhaps i'll sell it cheap to someone who doesn't care.
Cheers for the reply mate.
Same problem here!
Only my G2 is not rooted, it is still on factory OS and recently updated to 4.4.2.
I have tried on several computers, different ports and no help.
On the first connection to a PC not connected before windows reports "USB device not recognized" problem.
After that every time I connect the phone to the same computer the phone itself only recognizes that it is using USB charging mode, it does not recognize the computer connection (known by the USB ison on android system tray) even with "Ask upon connection option checked".
Even when I manualy change the Android mode in Settings --> PC Connection from MTP to PTP or even LG software, nothing happens.
Definetly there seems to be a problem with the phone, but I don't beleive it's a software but a firmware problem.
Please help if anyone knows what to do.
same thing happened after installing T-mobile rom thrugh twrp. but my device boots into fastboot and i tryed falshing :
laf.img, boot.img, aboot.img, recovery.img, laf.img
but after reboot my LS980 dissapear from device manager and stucked on LG logo.
Dont know what to do now.
I'm no expert, but given there are a lot of them here and none have weighed in on this with any ideas for a fix, i'm going to assume it's a hardware problem.
Anyone else agree? Hardware problem not software?
Cheers
I guess that you already wiped everything right? Apart from that, i'll suggest you to go to some tech supp and ask them if they can verify that each pin of the micro usb is properly working.
Sorry for my english, hope it helps!
Sent from my LG-D802 using XDA Free mobile app
I will try to check the connector although i dont think that it is a hardware issue.
BTW I can enter the download mode after flashing the mentioned partitions and i can also enter the stock LG recovery but when i do the factory reset it keeps showing Factory reset processing ... for ever
It has happened to me the same thing :crying:, and is a problem with the boot.img, if by chance your G2 version 4.4.2 and the the 4.2.2 boot.img, goodbye.
The only solution is to take it to repair a service official, there will change you the card, with the consequent change of IMEI.quent change of IMEI.
Homero2 said:
It has happened to me the same thing :crying:, and is a problem with the boot.img, if by chance your G2 version 4.4.2 and the the 4.2.2 boot.img, goodbye.
The only solution is to take it to repair a service official, there will change you the card, with the consequent change of IMEI.quent change of IMEI.
Click to expand...
Click to collapse
where are you going to repair your G2?
and how much have you paid the repair?
THANKS
Any fix for this guys i have same problem!
Here I'm getting the yellow !, any suggestion?
Sirs, I flashed the baseband (https://www.androidfilehost.com/?w=files&flid=12880) then it got working back.
solved for me
I have some kinds of that problem, let try:
Settings -> General -> PC Connection -> Select USB connection method -> Media device (MTP) (or whatever)
Got this same issue after flashing cloudy g3 rom. Then later flashing dirty unicorns, which requires jelly bean baseband. But even restoring g3 and 24a baseband, still doesn't work. No pc tethering and no on the go usb. My usb port is basically charge only.
---------- Post added at 03:58 PM ---------- Previous post was at 03:56 PM ----------
Everything else works fine...I actually never even noticed this bc I never tether to pc. But now I have to bc I want flask kdz
Help me please
someone have a solution to this problem?
My Lg G2 D803 still on boot loop (LG logo) and thats all ... no usb connection , reset factory doesnt work ...
HELP PLEASE ...
Thank you
Anyone has an idea how to fix this problem?
same problem
I have a LG G2 . recently updated from vs98027a to vs98039a 5.0 lollipop. Since the update my computer won't recognize my device in download mode and I don't have superuser ppermissions. Help plz
I also have the same problem.
It happened when I tried to backup info through LG PC Suite: the phone disconnected during the process, and now it's not recognized by any PC (http://forum.xda-developers.com/lg-g2/help/lg-g2-recognized-windows-backup-t3155323).
Also found a description of the same problem here: https://www.reddit.com/r/lgg2/comments/2urpnw/lg_g2_usb_only_charging_not_recognized_by_pc/ - no solutions, too.
Did anyone manage to fix this?
Hello guys, has anyone of you had a problem when you connect p8lite to pc. Only charging icon shows up and windows gives error:
Usb device not recognized
One of the USB devices attached to this computer has malfunctioned.
Ver. B564
I tested on my second computer and same problem.
Tested:
Usb debugging on/off
Different usb cable
Different computer
1. What version are you running on huawei?
2. What windows are you running on pcs?
1. B564
2. Both have win10
well .. i have no idea ... i'm also running b565 @ win 10 and i don't have any problems
try factory reset or try to plug in differents usb slots.
I tried different usb slots on both computers (USB2 & USB3) and still same..
I don't think that factory reset would work because it is still unrecognised even i shut down the phone
Would it be possible that phones connectors took some damage while dropping phone from pocket ?
You forgot to mention that
Of course it's possible, the phone could receive a shock which could lead to a short circuit from dropping xD
Is your phone in warranty?
Nope, bootloader unlocked.
Well so i have to learn using phone without adaway
I dunno if with bootloader unlocked your warranty is voided because it's not the same as rooting your phone .
Yeah. But i won't send phone back because usb file transfering isn't must have. That's only sad i cant install TWRP.
Edit: sorry! Read wrong
I know warranty is voided. But while i updated to B564 i lost twrp and now because usb wont work i cant flash it again to root
Vika__ said:
Yeah. But i won't send phone back because usb file transfering isn't must have. That's only sad i cant install TWRP.
Edit: sorry! Read wrong[emoji14]I know warranty is voided. But while i updated to B564 i lost twrp and now because usb wont work i cant flash it again to root
Click to expand...
Click to collapse
Unlocked bootloader isn't always voiding your warranty.
Sent from my ALE-L21 using XDA-Developers mobile app
recently, i am facing this problem too... don't know how, but everything was fine until a week ago...
Specs:
Build Number : ALE-L21C432B574 Sokkoban's Deodexed ROM
Rooted: Yes
Bootloader Status: Unlocked
Xposed : Yes, v85.1
Same problem here and I think it might have to do with the rooting. since having SU on it usb not been working so only hope maybe is to do factory reset that am going to try and see if works and backup everything first and go from their.
Have tried reset no joy still the same so am guessing something more to do with rom its self as never dropped phone or anything yet usb works now and then maybe hardware no idea but only happend since rooting.
Ok it worked with default cable on my laptop and my friends laptop..
Sent from my ALE-L21 using XDA-Developers mobile app
Great phone but for some reason only Chinese logic can explain OGG/USB function on p8 Lite comes factory disabled and even flashing it does not seem to help. NEVER AGAIN, HUAWEI If you cant enable a fkkn standard function on a midrange mobile then you are utterly useless .
I have same problem,,how to fix usb not recognized
I have a dilemma. This morning my usb was working fine but I needed to get back to stock and unrooted. I flashed the system.img from the NDR90X factory image and wiped my data (not userdata however because I didn't want to lose everything) the phone booted up just fine and operates fine, other then it doesn't mount on my pc anymore. fastboot and adb do not work for me either. I tried mounting on both windows and linux, I tried using another computer, and I have tried mounting through the recovery. none of these have worked. I cant try going back to complete stock because fastboot is not recognizing the device either. the phone still charges fine with no problems. But I still am getting the feeling that maybe the usb port has malfunction. I was hoping that maybe someone could help me with this problem and reaching a solution. I don't know if I can contact google about this problem because my device cannot be returned to completely stock.
I forgot to mention that after flashing the stock system.img I also flashed TWRP, and since then I am back on a custom rom to see if maybe that would fix my problem. However it still persists.
I have uploaded a picture showing what error message I am getting on windows.
Reinstall the USB drivers
hd-renegade said:
Reinstall the USB drivers
Click to expand...
Click to collapse
Turns out it was the USB that doesn't work. When I got home I tried another USB that I have and it works fine.
Sent from my AOSP on angler using Tapatalk
Hi,
I have rooted my phone few mounts ago, and now I run the LightROM with anroid 9.0
Now I want to go back to stock, so I downloaded some latest ROM (DBT) and tried to use Odin to flash it.
BTW, I want to go back to stock since I have some reception issues that I think could be solved by using a stock rom (stock modem).
But I can't detect the phone in Odin, the phone is not recognized by any computer I used (already tried 4).
So I can't use Odin.
Some background, I can't use fast cable charging from some reason, I think it's an hardware issue and not software (it's been the same with any ROM I tried).
In addition I just noticed that I can't even detect my phone as portable drive, the computer doesn't detect it and the device manager doesn't show any new device when I connect the USD cable to my phone.
I also tried to play with the developer settings and the default USB settings, nothing works.
Charging using cable works, but not fast charging.
Currently I'm using fast wireless charging to charge my phone.
Do you have any idea how to resolve my issue to be able to flash stock rom?