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?
Hi Everyone
i am trying to enable the LTE Band 41 in my G900F HK version.
the phone is Running stock, Rooted android 5 BOA3 ★ DevBase by ALEXNDR
when i go to the usb setting and change it from MTP + ADB to RNDIS + DM + Modem mode, My PC will remove the phone as MTP and that is it, i mean its like my phone is not plugged in. i have looked everywhere for a solution but could not get anything related to the phone not shown in my device manger.
Also i have set the USB Debugging on, but its not helping.
I have plugged the phone to 2 laptop win7 & win8, as well to the mac running Virtual Win 7.
If i downgrade to stock rooted 4.4.2 and put the phone in RNDIS, my win 7 PC will have no problem in detecting the phone and install the rndis driver.
please help
Thank you
Same Problem
screem_3 said:
Hi Everyone
i am trying to enable the LTE Band 41 in my G900F HK version.
the phone is Running stock, Rooted android 5 BOA3 ★ DevBase by ALEXNDR
when i go to the usb setting and change it from MTP + ADB to RNDIS + DM + Modem mode, My PC will remove the phone as MTP and that is it, i mean its like my phone is not plugged in. i have looked everywhere for a solution but could not get anything related to the phone not shown in my device manger.
Also i have set the USB Debugging on, but its not helping.
I have plugged the phone to 2 laptop win7 & win8, as well to the mac running Virtual Win 7.
If i downgrade to stock rooted 4.4.2 and put the phone in RNDIS, my win 7 PC will have no problem in detecting the phone and install the rndis driver.
please help
Thank you
Click to expand...
Click to collapse
I am having The same problem with Samsung S5 900F and Windows 7
Alejandro R said:
I am having The same problem with Samsung S5 900F and Windows 7
Click to expand...
Click to collapse
Same problem my phone is already with android Lolipop I think this have something to do
Alejandro R said:
Same problem my phone is already with android Lolipop I think this have something to do
Click to expand...
Click to collapse
+1 i think it might be due to the android 5
Would really appreciate if any expert can let us know for sure
screem_3 said:
+1 i think it might be due to the android 5
Would really appreciate if any expert can let us know for sure
Click to expand...
Click to collapse
me too I need the phone working with LTE 700/1700 bands
Me too... Any Solution for that ?
SM-G900F NOT WORK ON DM+MODEM+ADB
maybe a solution
screem_3 said:
Hi Everyone
i am trying to enable the LTE Band 41 in my G900F HK version.
the phone is Running stock, Rooted android 5 BOA3 ★ DevBase by ALEXNDR
when i go to the usb setting and change it from MTP + ADB to RNDIS + DM + Modem mode, My PC will remove the phone as MTP and that is it, i mean its like my phone is not plugged in. i have looked everywhere for a solution but could not get anything related to the phone not shown in my device manger.
Also i have set the USB Debugging on, but its not helping.
I have plugged the phone to 2 laptop win7 & win8, as well to the mac running Virtual Win 7.
If i downgrade to stock rooted 4.4.2 and put the phone in RNDIS, my win 7 PC will have no problem in detecting the phone and install the rndis driver.
please help
Thank you
Click to expand...
Click to collapse
Sorry the intrusion, i had the same problem and i had fixed it by rebooting the system in recovery and enabling cp logging, after that i was stuck in cdc serial and solved installing keis, Hope I help you guys
Acquarius7 said:
Sorry the intrusion, i had the same problem and i had fixed it by rebooting the system in recovery and enabling cp logging, after that i was stuck in cdc serial and solved installing keis, Hope I help you guys
Click to expand...
Click to collapse
He's right! turn on CP Logging then do it and it worked... The only problem I did face which could have been something different was when I used the app Samsung PHONE INFO and tried to get to the service menu it would come up blank, after disabling CP and back to MTP + ADB it came up again.
Also, I am on G900V with their newest firmware OE1 and there is no option for CP Logging anymore, it automatically detects it like it did in KitKat. (Just a side note)
I had faced the same issue
Booted into recovery and enabled CP logging. it works perfect
Quick Question
screem_3 said:
Hi Everyone
i am trying to enable the LTE Band 41 in my G900F HK version.
the phone is Running stock, Rooted android 5 BOA3 ★ DevBase by ALEXNDR
when i go to the usb setting and change it from MTP + ADB to RNDIS + DM + Modem mode, My PC will remove the phone as MTP and that is it, i mean its like my phone is not plugged in. i have looked everywhere for a solution but could not get anything related to the phone not shown in my device manger.
Also i have set the USB Debugging on, but its not helping.
I have plugged the phone to 2 laptop win7 & win8, as well to the mac running Virtual Win 7.
If i downgrade to stock rooted 4.4.2 and put the phone in RNDIS, my win 7 PC will have no problem in detecting the phone and install the rndis driver.
please help
Thank you
Click to expand...
Click to collapse
Hey, just a quick question, i'm currently attempting to do the same procedure on my Ulefone future, and i'm having a tough time finding a way to access the hidden advanced usb settings menu.. Now, saying that i'm a neophyte with the higher end of android tinkering would be an insult to neophytes everywhere. I am utter clueless when it comes to this stuff.. My phone has been rooted and every pre-requisite has been met, i simply cannot find the code for accessing this blasted hidden menu, please let me know how you accessed your usb setting menu.. I would appreciate you and love you, platonicly, forever.
thaaaaaaaaaaaaaaaaaanx.. it's working 100%
Acquarius7 said:
Sorry the intrusion, i had the same problem and i had fixed it by rebooting the system in recovery and enabling cp logging, after that i was stuck in cdc serial and solved installing keis, Hope I help you guys
Click to expand...
Click to collapse
I would like to thank you so much for this solution. I spent a lot of time trying to find a solution for Samsung S4 beeing not recongnized by the PC in DM + MODEM + ADB mode and you gave me the solution. Thank you.
Hi, my brother got this phone with RR 7.1.1 installed and it seems like the rom has lots of bugs because it reboots from time to time and instead of botting to the system it bots to TWRP, I downloaded Lineage OS to install it but the phone isnt detected at all by the PC, like, it wont even tell me there is a new device connected, the usb port is working because I can charge it just fine with the charger but nothing works when connecting it to the PC, anyone has faced this problem or knows how to fix it? Also, can I just downgrade to stock marshmallow?
Thanks in advance.
zeratos said:
Hi, my brother got this phone with RR 7.1.1 installed and it seems like the rom has lots of bugs because it reboots from time to time and instead of botting to the system it bots to TWRP, I downloaded Lineage OS to install it but the phone isnt detected at all by the PC, like, it wont even tell me there is a new device connected, the usb port is working because I can charge it just fine with the charger but nothing works when connecting it to the PC, anyone has faced this problem or knows how to fix it? Also, can I just downgrade to stock marshmallow?
Thanks in advance.
Click to expand...
Click to collapse
Go to settings, developer options and enable debugging mode. When you will connect via usb it should ask for authorization. Post authorizing, pull down the menu and set usb to data transfer.
There are other options like using memory card or transfer via xender.