Database Develop

[Q] USB Device not recognized

Hi everybody,
I installed the drivers manually but still I get the pop up of "USB Device not recognized".
I installed the drivers named as "LGUnitedMobileDriver_S498CA21_WHQL_ML_Ver_2.1".
Help please...

Change USB port? Do not connect to fron panel USB's?

hikmetataman said:
Hi everybody,
I installed the drivers manually but still I get the pop up of "USB Device not recognized".
I installed the drivers named as "LGUnitedMobileDriver_S498CA21_WHQL_ML_Ver_2.1".
Click to expand...
Click to collapse
You aren't mention what version of MS Wind0w$ you're using, and what ROM you used on your phone.
mgregor said:
Change USB port? Do not connect to fron panel USB's?
Click to expand...
Click to collapse
And same as mgregor, don't use front panel to connect USB.

Used drivers must be obsolete. Use 3.2.1 or 3.5 and be sure android platform modem is activated to be recognized by b2c

Try LG United Mobile Driver, there is a link on knzo's CWM recovery thread. And yes try a direct port on motherboard behind your cpu case.
Also try another usb cable.
Sent from my Optimus Black using Tapatalk

at this problem.... in my opinion is to check your usb cable or the usb port of your mobile...
if you cannot open the mobile,you can go to a mobile technician and tell him to resolder the usb port of your LG optimus....

My pc is a notebook.

Firstly thanks a lot.
mgregor said:
Change USB port? Do not connect to fron panel USB's?
Click to expand...
Click to collapse
I use notebook. I tried changing ports.
redy2006 said:
You aren't mention what version of MS Wind0w$ you're using, and what ROM you used on your phone.
And same as mgregor, don't use front panel to connect USB.
Click to expand...
Click to collapse
I use 32bit XP, I have a stock rom v10a.
Ilko said:
Used drivers must be obsolete. Use 3.2.1 or 3.5 and be sure android platform modem is activated to be recognized by b2c
Click to expand...
Click to collapse
I use 3.2.1 version of drivers. LG PC Suite IV or B2C can't recognize my phone.
lesp4ul said:
Try LG United Mobile Driver, there is a link on knzo's CWM recovery thread. And yes try a direct port on motherboard behind your cpu case.
Also try another usb cable.
Sent from my Optimus Black using Tapatalk
Click to expand...
Click to collapse
I tried a new usb cable but did not work.
juvanni said:
at this problem.... in my opinion is to check your usb cable or the usb port of your mobile...
if you cannot open the mobile,you can go to a mobile technician and tell him to resolder the usb port of your LG optimus....
Click to expand...
Click to collapse
It seems a bit risky my friend... I don't know what to do. Can I root my device without connecting to pc?? I want nova. Previously I rooted my wildfire with CM7. It was very different!

Be sure platform modem is activated in peripherals manager. This is what makes the phone being recognized by pc suite and b2c

Ilko said:
Be sure platform modem is activated in peripherals manager. This is what makes the phone being recognized by pc suite and b2c
Click to expand...
Click to collapse
It is activated but when I try to update driver it can not find any. Which driver should I use at that point? Maybe there is a problem in the connection point on the phone?? I am not use about taking my optimus to a mechanic.

Do you have another computer to test? Perhaps the problem was related to your Wind0w$ system...
hikmetataman said:
Can I root my device without connecting to pc??
Click to expand...
Click to collapse
Use WiFi, open forum and search GingerBreak, download and install it.
If your ROM are V10A, then it should work..
CMIIW.

redy2006 said:
Do you have another computer to test? Perhaps the problem was related to your Wind0w$ system...
Use WiFi, open forum and search GingerBreak, download and install it.
If your ROM are V10A, then it should work..
CMIIW.
Click to expand...
Click to collapse
I tried to connect my phone to an other XP result is the same "USB device not recognized". I tried Windows 7, Windows 7 did not even pop-up! Nothing happened! Only my phone was charging.
I am looking for gingerbreak but this problem is very annoying for transfering files. Each time I have to remove the SD card... Or myphoneexplorer(connected by wireless)...
Any advice?

Hi guys,
I finally managed to connect my phone to my pc. The problem was about the cables that I tried. Another original lg cable solved my problem.
But now I have an other problem. The brightness of my screen. It is usually at the minimum brightness and I can't change it. It does not change anything when I change the brightness settings. I tried other firmwares from http://luivit.altervista.org/firmwareP970/index.php but did not work still the same!
Help please...

USB mass storage problem

Hi guys,
I have a problem with my Note.
When I plug my phone to my computer, it doesn't recognize but it charged.
I have also install some applications like usb switcher, but it doesn't work anymore.
I have flashed some ROM too but it's the same problem.
I have changed my USB cable too.
I hope that it's not a hardware problem ...
If a someone have any solutions, help me please.
Thanks.
And sorry for my bad english I'm French.

Sounds like a driver issue.
Enable usb debuggin and reconnect.
If youre on a stock rom try changing from mtp to ...the other option.
Sent from my GT-N7000 using xda app-developers app

Anthropostar said:
Sounds like a driver issue.
Enable usb debuggin and reconnect.
If youre on a stock rom try changing from mtp to ...the other option.
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
Thanks for your reply.
But I have tried to clean my USB port, and now when I connect my phone to my mac it's recognize but when I tap on connect, my phone disconnect/connect every time. It's crazy.
So I think that my USB port is dead ...

Skiiys said:
Thanks for your reply.
But I have tried to clean my USB port, and now when I connect my phone to my mac it's recognize but when I tap on connect, my phone disconnect/connect every time. It's crazy.
So I think that my USB port is dead ...
Click to expand...
Click to collapse
Hmm i saw your post on ~dev. [rom] jellybeer.
I flashed the same rom [most recent one]
and ran into the same issue, so i guess theres something missing in that rom.

Anthropostar said:
Hmm i saw your post on ~dev. [rom] jellybeer.
I flashed the same rom [most recent one]
and ran into the same issue, so i guess theres something missing in that rom.
Click to expand...
Click to collapse
Thanks for your reply.
Yes I have flashed jellybeer but I have changed 4 times, different ROM, but I have the same issue. I have bought a micro usb port today. I wait it.
Today, my phone charge very slowly ...

[Q] Rooting w/o USB connection

Hi, guys! I have a really big problem :/. Right now I'm using the stock 2.3.4 gingerbread from LG ,but you all know that this is the worst OS ever. I wanted to get rid of it but i cant connect my device to the computer. It's only charging. I need a way to root it w/o usb connection. Do u have any suggestions? It's not a software problem! Something inside the phone is broken and i don't know what it is. Is there a way to root it via bluetooth or SD card? I didn't find any apps to root it too. I know gingerbreak etc, but they dont work for 2.3.4. Thank you in advance and i hope there is a solution. :fingers-crossed:

I am afraid you can't. Replacing your micro usb port could solve your problem. I reccomend to buy a micro usb port which is already on the flexible cable so you can avoid ironing.
Sent from my LG-P990 using xda app-developers app

So i'll need this? I asked a staff member in a service station and he said that the port isnt broken. So i need the whole thing port+flexible cable? Is that what i should do? Thanks alot. Ohh man i cant post links still: http:___//i.ebayimg.com/t/LG-G2X-Optimus-2X-P990-P999-Micro-USB-Charging-Port-Flex-Cable-Repair-Part-/00/s/OTU1WDE0MDI=/z/unUAAOxy9DRSAoTf/$T2eC16R,!wsE9suwycosBS!oTe7+VQ~~60_57.JPG

stupid question: did you try another usb cable or usb port?

Yeah, dude. Of course. I've tried different settings like usb debugging on/off too but still nothing.

here are some articles you might want to check out regarding usb connection
http://www.birdiesync.com/my-android-device-cannot-connect-over-usb
http://www.droidxforums.com/forum/chevyno1/31975-usb-charge-only-ssx.html (2nd post reply)
i forgot how the mass storage settings in gingerbread look like but there should be an option to put the phone in "charge only" mode (which you should disable)... pressing menu key in settings > storage doesn't give you any options to choose?

In gingerbread you can only turn usb mass storage and usb debugging on/off. These settings didn't help. I'll read more about the first link you gave me and try it out.

peetyo040497 said:
In gingerbread you can only turn usb mass storage and usb debugging on/off. These settings didn't help. I'll read more about the first link you gave me and try it out.
Click to expand...
Click to collapse
This is quite challenge, root without usb connection. First idea I got to use ADB over WiFi, but this is available from ICS, not on GB.
Second idea - what I remember, some of root methods use APK installation over ADB by script. Maybe you can search for these script methods and place all required files on SD Card. Then try to execute commands by terminal on device itself to install and root.
It's just my idea, maybe wrong, maybe help.

peetyo040497 said:
So i'll need this? I asked a staff member in a service station and he said that the port isnt broken. So i need the whole thing port+flexible cable? Is that what i should do? Thanks alot. Ohh man i cant post links still: http:___//i.ebayimg.com/t/LG-G2X-Optimus-2X-P990-P999-Micro-USB-Charging-Port-Flex-Cable-Repair-Part-/00/s/OTU1WDE0MDI=/z/unUAAOxy9DRSAoTf/$T2eC16R,!wsE9suwycosBS!oTe7+VQ~~60_57.JPG
Click to expand...
Click to collapse
Yes that is what you need if you have to replace your USB port but you don't have skills to replace only the usb port.
You can try gingerbreak to root your phone, but it maybe won't work.

bitdomo said:
Yes that is what you need if you have to replace your USB port but you don't have skills to replace only the usb port.
You can try gingerbreak to root your phone, but it maybe won't work.
Click to expand...
Click to collapse
Gingerbreak works on devices with android 2.3.3 and lower. Anyways I've tried it but it didn't work.

p.valenta said:
This is quite challenge, root without usb connection. First idea I got to use ADB over WiFi, but this is available from ICS, not on GB.
Second idea - what I remember, some of root methods use APK installation over ADB by script. Maybe you can search for these script methods and place all required files on SD Card. Then try to execute commands by terminal on device itself to install and root.
It's just my idea, maybe wrong, maybe help.
Click to expand...
Click to collapse
I'm not aware of ADB and scripting. Can you give me sоme guidelines?(I'm sorry 'bout my english. I hope you understand)
p.s. I found some info about ADB. So you need ADB to control your device via commands, but you can use ADB on your computer? You say that i have to find a way to use ADB on my phone so it controls itself and roots?

peetyo040497 said:
I'm not aware of ADB and scripting. Can you give me sоme guidelines?(I'm sorry 'bout my english. I hope you understand)
p.s. I found some info about ADB. So you need ADB to control your device via commands, but you can use ADB on your computer? You say that i have to find a way to use ADB on my phone so it controls itself and roots?
Click to expand...
Click to collapse
sorry to hear about your problems but just a simple question here have u tried another computer ? i had this problem with my nexus when i connect it to the pc i couldn't transfer my stuff to it but adb worked, but when i took it to another computer both mtp and adb worked

Yes, I've tried another pc's port and it didnt find my device too. My issue isn't the same i mean that my computer doesn' recognize the phone. There are no messeges that appear on the device or computer.

peetyo040497 said:
Yes, I've tried another pc's port and it didnt find my device too. My issue isn't the same i mean that my computer doesn' recognize the phone. There are no messeges that appear on the device or computer.
Click to expand...
Click to collapse
peetyo maybe your cable isn't good and did you try to install lg drivers?
check also by device manager or computer management or a device is appeared
Sent from my LG-P990 using xda app-developers app

winstonxl2 said:
peetyo maybe your cable isn't good and did you try to install lg drivers?
check also by device manager or computer management or a device is appeared
Sent from my LG-P990 using xda app-developers app
Click to expand...
Click to collapse
Guys, the problem is not in the computer nor in the cable, it's in the phone. I'm 99% sure that it's a hardware problem. So i need to find a way to root or flash it without using usb connection.

i'm somehow sure that the real problem here is the device driver installation on your PC/Windows, not the phone...
btw which windows version are you using?
did you try checking out the AIO tool thread?
http://forum.xda-developers.com/showthread.php?t=2020737

60nine said:
i'm somehow sure that the real problem here is the device driver installation on your PC/Windows, not the phone...
btw which windows version are you using?
did you try checking out the AIO tool thread?
http://forum.xda-developers.com/showthread.php?t=2020737
Click to expand...
Click to collapse
Win 8 currently.
How would this thread help me?
I'll try installing the drivers on this laptop cause i''ve tried before on a one with xp.
P.s. With the drivers reinstalled on win 8 it doesnt work. As i said i've tried different computers, different cables and different setting.

peetyo040497 said:
Win 8 currently.
How would this thread help me?
I'll try installing the drivers on this laptop cause i''ve tried before on a one with xp.
P.s. With the drivers reinstalled on win 8 it doesnt work. As i said i've tried different computers, different cables and different setting.
Click to expand...
Click to collapse
if you read the 1st post, you might find out how could it help you... especially if you use win 8 which caused problems for many other users when trying to install the drivers or trying to flash the phone...
I - Install APX (NVFlash Recovery) Drivers if not already installed.
It starts the windows device driver wizard to help you install the drivers needed for NVFlash. It detects your system OS and gives additional on-screen instructions needed if your PC is running Windows 8.
FYI: The drivers are located under ToolKitFiles\nvflash\driver folder.
Click to expand...
Click to collapse

60nine said:
if you read the 1st post, you might find out how could it help you... especially if you use win 8 which caused problems for many other users when trying to install the drivers or trying to flash the phone...
Click to expand...
Click to collapse
I use windows 8 from a week. Anything i've done before was on a xp/ win 7. The problem isnt in the win 8 i use now. I've tried everything on my xp laptop. I have a friend who has the same phone and he can connect it to his computer so everything is fine with his computer. I've tried to connect my optimus to his computer and again it wasnt found by the computer. The problem must be in my device.
I'll try installing the APX drivers.

peetyo040497 said:
I use windows 8 from a week. Anything i've done before was on a xp/ win 7. The problem isnt in the win 8 i use now. I've tried everything on my xp laptop. I have a friend who has the same phone and he can connect it to his computer so everything is fine with his computer. I've tried to connect my optimus to his computer and again it wasnt found by the computer. The problem must be in my device.
I'll try installing the APX drivers.
Click to expand...
Click to collapse
u said that u wanted to get rid of the lg gingerbread software, and for that u dont really need to root, u could use the all in one toolkit and flash the new unlocked bootloader with cwm or twrp and install the new bootloader rom u want its as easy as that

[SOLVED]

[SOLVED]

Try updating your USB drivers. Might help or try connecting to another pc
Sent from my Le X526 using Tapatalk

DayWalker said:
Try updating your USB drivers. Might help or try connecting to another pc
Sent from my Le X526 using Tapatalk
Click to expand...
Click to collapse
Please Read the 3rd line of my post. I have said already "I have also tried formatting my le 2 and my pc but still the same"
And also as i know about these things being a developer myself and having rooted and developed some things for some few phones before, i have also tried uninstalling the drivers completely also tried installing other drivers which i find compatible. But still the Same Problem....
Can you please do 1 thing, can you use a tool named DrvBk and backup your le 2 related drivers? And then give it to me so i can try installing that...
It will be very helpful of you.
Thanks in advance.

Rishabh Rao said:
Please Read the 3rd line of my post. I have said already "I have also tried formatting my le 2 and my pc but still the same"
And also as i know about these things being a developer myself and having rooted and developed some things for some few phones before, i have also tried uninstalling the drivers completely also tried installing other drivers which i find compatible. But still the Same Problem....
Can you please do 1 thing, can you use a tool named DrvBk and backup your le 2 related drivers? And then give it to me so i can try installing that...
It will be very helpful of you.
Thanks in advance.
Click to expand...
Click to collapse
Well i thought you only formatted le2 anyway yeah i supposed i could. Ill See to it
Sent from my Le X526 using Tapatalk

I dont think its the driver problem. The might be the USB code running on the phone is failing. I was unable to find driver(INF file with VID and PID) for LEECO Le 2(You can find PID/VID using USBVIEW). Suggest to use AIRDROID or SHAREIT that is if your WIFI is working Or USB OTG(I thing you have thought this).

DayWalker said:
Well i thought you only formatted le2 anyway yeah i supposed i could. Ill See to it
Click to expand...
Click to collapse
Thanks

caldran said:
I dont think its the driver problem. The might be the USB code running on the phone is failing. I was unable to find driver(INF file with VID and PID) for LEECO Le 2(You can find PID/VID using USBVIEW). Suggest to use AIRDROID or SHAREIT that is if your WIFI is working Or USB OTG(I thing you have thought this).
Click to expand...
Click to collapse
Yes but im just confused about 1 thing i even did factory reset and even full wipe and flash on my le2 and also usb works well in fastboot mode. So i can't figure out what's the problem.....
And also i would have got the driver INF file
But the phone is just giving no driver to my pc
And pc says device descriptor request failed. So means pc can't even identify phone. so how can i get the pid or vid cause i dont even have any drivers....
And share it or airdroid wont work for me as my pc doesn't have a wifi card
So rerouting file thru my modem would be very slow for transferring file of more than 10 gb size. So it would take hours maybe for that
So only solution i have now if usb not solved is to buy a new usb otg cable as my old one got ripped. So if i dont get any solution within a few days, then thats my only option :crying:

Rishabh Rao said:
Thanks
Click to expand...
Click to collapse
Here's the link of my Driver Backup. Hope it would help.
https://drive.google.com/open?id=0B_U5K4aTA3J3cWQ1Y2tTajc3Nms

First check your pc usb port is work perfectly

sandip121 said:
First check your pc usb port is work perfectly
Click to expand...
Click to collapse
Please Read the Post properly and then comment..
I have said already
IF according to u my pc usb port is not well, then how could i connect it in fastboot and how could it work there?
And also i have even tried it in different ports but still the same.

What happened with the drivers? Were you able to get your phone back to work?
Sent from my Le X526 using Tapatalk

DayWalker said:
What happened with the drivers? Were you able to get your phone back to work?
Sent from my Le X526 using Tapatalk
Click to expand...
Click to collapse
No actually not
My usb is still the same
But @caldran gave me the idea of using airdroid
And thats working well
I dont get speeds of usb with it
But atleast
Something is better than nothing right...
So i gotta live with it....

Anyway thanks for ur help

Hey bro, try pda.net

BhaiDon said:
Hey bro, try pda.net
Click to expand...
Click to collapse
Bro if you dont know the solution, then please dont give foolish answers....
Read the full post again before answering please......:silly:
And if phone will disconnect as soon as connected even in AT mode then how could PdaNet Work, BTW FYI i tried it already.... By my AIO Toolkit.

Bro, My Le2 was also not connecting to PC..same problem as you
But Then I tried pda.net both on my pc & phone..and whooooop....my phone connected to pc
And by the way, I am new to XDA, but not foolish....
I run my own mobile repair centre at Ahmedabad:good:

BhaiDon said:
Bro, My Le2 was also not connecting to PC..same problem as you
But Then I tried pda.net both on my pc & phone..and whooooop....my phone connected to pc
And by the way, I am new to XDA, but not foolish....
I run my own mobile repair centre at Ahmedabad:good:
Click to expand...
Click to collapse
Bro im sorry if i hurt u by any means, i didn't mean it.
I just wanted to say that PdaNet doesnt work for me
And actually i thing ur problem was with drivers.
But now i realize mine isnt
My problem is maybe in the usb port/hardware of my le2
It connects well in fastboot mode
But now when i connect in android or recovery mode it says not recognized
Anyways thanks for trying to help me
Sent from my Le 2 using XDA Labs

Rishabh Rao said:
Bro im sorry if i hurt u by any means, i didn't mean it.
I just wanted to say that PdaNet doesnt work for me
And actually i thing ur problem was with drivers.
But now i realize mine isnt
My problem is maybe in the usb port/hardware of my le2
It connects well in fastboot mode
But now when i connect in android or recovery mode it says not recognized
Anyways thanks for trying to help me
Click to expand...
Click to collapse
Its alright bro

I don't know if this'll work for you
i had the same problems all i did was Right click and updated driver then
click on browse driver
then click on let me pick
Then select MTP USB driver and then click next
It worked for me and it may be too standard but try it might work

lesterjoel123 said:
I don't know if this'll work for you
i had the same problems all i did was Right click and updated driver then
click on browse driver
then click on let me pick
Then select MTP USB driver and then click next
It worked for me and it may be too standard but try it might work
Click to expand...
Click to collapse
No bro it doesn't work.
Tried a 100 times already

OTG drive not being detected on rooted note 8

Recently I rooted my mobile,
I used to connect my OTG before that without any problems, but now it's not being detected at all
Any solutions?
I tried restarted while device is connected, and turned on off USB debugging
Nothing happens

ahub1988 said:
Recently I rooted my mobile,
I used to connect my OTG before that without any problems, but now it's not being detected at all
Any solutions?
I tried restarted while device is connected, and turned on off USB debugging
Nothing happens
Click to expand...
Click to collapse
Is device (usb flash/hdd) formatted to Fat32 or ExFat? For an ntfs device you'll need an app for that, no native ntfs support
Sent from my God Mode 8

Try using it on another android device. If it works then there is an issue with the custom OS installed on your device.

It is in Fat 32
I tried another USB too
also changed type to exFat32
nothing happens
Initially stock firmware, now deluxeROM
dosen't work

ahub1988 said:
It is in Fat 32
I tried another USB too
also changed type to exFat32
nothing happens
Initially stock firmware, now deluxeROM
dosen't work
Click to expand...
Click to collapse
What file manager are you using to try to read it?
I use Es-Explorer but i see many people using the app X-Plorer.
Give one of those apps a try.
Sent from my God Mode 8

louforgiveno said:
What file manager are you using to try to read it?
I use Es-Explorer but i see many people using the app X-Plorer.
Give one of those apps a try.
Click to expand...
Click to collapse
Astro and stock file manager

Can you charge your device using the stock charger that came with your device?

iceepyon said:
Can you charge your device using the stock charger that came with your device?
Click to expand...
Click to collapse
Absolutely without problems

ahub1988 said:
Absolutely without problems
Click to expand...
Click to collapse
Try using a different OTG drive and see if you have the same problem. Could be an issue with that drive.

iceepyon said:
Try using a different OTG drive and see if you have the same problem. Could be an issue with that drive.
Click to expand...
Click to collapse
Done that not working .

ahub1988 said:
Done that not working .
Click to expand...
Click to collapse
In that case try manually reinstalling the OS back onto your device. As there is a chance that something went wrong with the rooting process.

iceepyon said:
In that case try manually reinstalling the OS back onto your device. As there is a chance that something went wrong with the rooting process.
Click to expand...
Click to collapse
I reinstalled OS now it says connected and then disconnected , it goes for cycle for few times and then not gets detected . Will try in another mobile

I connected my OTG to other Android device and got same error, then
I formated my OTG in Mac and re connected to my mobile, it got detected once then again it is not getting detected
In both device, but now again it's not getting detected in my mobile but being detected in other mobile .
Other mobile has USB setting which I am sharing here, I can't seemed to find these settings in my mobile while it is connected to OTG