Cannot connect via USB - LG Optimus L90

Hey there,
I've had this issue since I updated to lollipop and it's been really bothering me. When I try to connect my phone to laptop via usb it connects and I can see phone in device manager, but I can't access the files and media. It just says it's charging and that's it. If I click on it nothing happens. I have tried lot of things, usb debugging on , tried LG PC suit, tried some usb drivers etc. So basically PC recognizes phone, but I can't get to MTP mode and access the files. Is there anything I can try or do?? This is really annoying issue. :crying:

helps said:
Hey there,
I've had this issue since I updated to lollipop and it's been really bothering me. When I try to connect my phone to laptop via usb it connects and I can see phone in device manager, but I can't access the files and media. It just says it's charging and that's it. If I click on it nothing happens. I have tried lot of things, usb debugging on , tried LG PC suit, tried some usb drivers etc. So basically PC recognizes phone, but I can't get to MTP mode and access the files. Is there anything I can try or do?? This is really annoying issue. :crying:
Click to expand...
Click to collapse
Go to settings -> Storage -> Hit the three dots in top right -> USB Computer Connection -> See if you have MTP box checked.

Thank you. Though, there is no menu when I open storage, this is all I can see. No three dots.
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helps said:
Thank you. Though, there is no menu when I open storage, this is all I can see. No three dots.
Click to expand...
Click to collapse
My bad, first you need to connect the phone to the pc via usb.

I did connect it and nothing changed Still not showing three dots

helps said:
I did connect it and nothing changed Still not showing three dots
Click to expand...
Click to collapse
Try a factory reset maybe that helps.

Related

[Q] Rooting and the ADB Interface shows but...

Noob question for sure, sorry. I'm studying up and getting ready to root my Droid Bonic. I have installed the Motorola Device Manger for drivers. I checked the device manager per the instructions and yes with debugging on and the Media device (MTP) on the ADB Interface, "Mot Composite ADB Interface" does show in my device manager but I see there's an issue of some sort with "Portable Devices/ MTP !" Should I be concerned with this?
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Thanks,
Marty
Sys Version 6.7.246
Android Version 4.0.4
Build 6.7.2.223
Windows xp SP3
martyslc said:
Noob question for sure, sorry. I'm studying up and getting ready to root my Droid Bonic. I have installed the Motorola Device Manger for drivers. I checked the device manager per the instructions and yes with debugging on and the Media device (MTP) on the ADB Interface, "Mot Composite ADB Interface" does show in my device manager but I see there's an issue of some sort with "Portable Devices/ MTP !" Should I be concerned with this?
Thanks,
Marty
Sys Version 6.7.246
Android Version 4.0.4
Build 6.7.2.223
Windows xp SP3
Click to expand...
Click to collapse
I'm thinking it should say "Droid Bionic" but not sure how to get it to show?? Maybe it wont in xp?
Any idea's??
-Marty
XP has a really hard time enumerating and loading the drivers for the MTP device. You can basically ignore it for the purposes of manipulating the phone as all the other interfaces for fast boot and diagnostic mode etc. load properly and function under XP.
cellzealot said:
XP has a really hard time enumerating and loading the drivers for the MTP device. You can basically ignore it for the purposes of manipulating the phone as all the other interfaces for fast boot and diagnostic mode etc. load properly and function under XP.
Click to expand...
Click to collapse
Thank You !
cellzealot said:
XP has a really hard time enumerating and loading the drivers for the MTP device. You can basically ignore it for the purposes of manipulating the phone as all the other interfaces for fast boot and diagnostic mode etc. load properly and function under XP.
Click to expand...
Click to collapse
Thank You !

[Q] Following Goldcard method: Stuck on "Checking . . ." screen

I'm stuck on this screen in the "usb host mode":
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I allowed it a full hour or so and nothing happened.
Took the battery out and gave it another try -- same result.
Since this whole thing involves using USB, I don't understand why it's saying serial.
Found an old topic about a similar problem on a different phone --- the person solved it saying it was a problem with the connector:
When I try to reinstall the ROM also (Power + OK button) I am getting "serial" showing at the bottom of the screen instead of "USB"
Click to expand...
Click to collapse
On the phone itself the female usb connector had 2 of the 5 "connectors" entangled with each other inside.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=518049
I've pretty thoroughly inspected all the usb cables/connectors and they all look fine.
Edit: I have also used Zune software to transfer pictures etc. from the phone to my computer with no problem over USB.
Any suggestions? Thank you.
Bump.
I'm really lost here. I've tried countless flash drives and microsd cards/adapters. I am thinking of making a new cable, but I really think that the cable I have now is fine (since it recognizes that something is connected). One time I even tried formatting a flash drive to NTFS just to see what it would say --- it detected the flashdrive but then said that there is no ROM available. Of course when it's formatted to FAT32, it gets stuck on the "checking... serial" screen.
Check list
You must use
Y-Cable
Card reader
1GB MicroSD or SD (don't bother with 2GB)
you can try with USB drives, but I haven't tried myself, some people claim it worked, again: 1GB usb drive
The best tutorial about this:
http://forum.xda-developers.com/showthread.php?t=1597837

[Q] Can't get MTP to work

Hi,
I have been trying to connect my Nexus 6 to my work pc but I just can't get the MTP file copying mode to work properly. I have used the latest Google USB driver and actually it's not so bad. With USB Debugging turned ON, I see "Android Deivce > Android ADB Interface" properly installed in device manager. I even see my phone's serial no. when I type "adb devices" in command prompt. BUT the bloody MTP mode just refuses to work. It keeps showing up in Device Manager as "Other devices" > MTP, with a question mark next to it.
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When I switch USB debug off, there's no Android ADB Interface, and the unknown MTP entry in "other devices" transforms to "Nexus 6", again with a question mark next to it.
I have tried to manually install the proper driver but for starters, if I just select the folder where the .inf files are located Windows don't seem to anything inside it and when I force it to use that file ("Show All Devices > Have Disk") it only shows ADB and Bootloader drivers:
So what am I suppose to choose there in order for MTP to work as it should?
Have you tried other pc or laptop??
Yes, the phone shows up correctly in all modes on my home pc.
Just for giggles you ought to download the Nexus toolkit and let it go find the drivers it thinks it needs to work. afterwards you could just delete the tool. http://www.wugfresh.com/nrt/
Sent from my Google N6 on VZ
DebianDog said:
Just for giggles you ought to download the Nexus toolkit and let it go find the drivers it thinks it needs to work. afterwards you could just delete the tool. http://www.wugfresh.com/nrt/
Sent from my Google N6 on VZ
Click to expand...
Click to collapse
I did that to no success but in the end, I just tried a different USB2.0 port and it worked, all drivers installed correctly. Now the weird thing is I can read from the internal memory of the phone, I can delete stuff from it, but when I try to copy something to it it says: "Error copying. The device has either stopped responding or has been disconnected" so I can't yet copy to it. This is driving me crazy right now...
I have this issue this morning. Right click and Update Drivers > Browse For Drivers > Let me pick > Portable Devices > Standard MTP Device > MTP Device.

Recover data from encrypted Z3c with broken screen?

Hi guys,
The screen on my Z3C is broken.
I brought it to a repair shop, but they were unable to repair it, they've tried 4 different displays and the touch-input would not work.
So now i'm trying to recover my data, but i was using the Android encryption.
I can boot the phone into recovery and connect to it via ADB.
Is there any way to unlock and mount the data partition in the adb shell?
Or is there a way to unlock and mount the partition on my linux box if i dump the partition to my computer via netcat?
Thanks in advance!
If you can boot up normally you can connect a mouse with an USB OTG cable and unlock your phone that way.
Alcedii said:
If you can boot up normally you can connect a mouse with an USB OTG cable and unlock your phone that way.
Click to expand...
Click to collapse
You have any tips if connecting mouse doesn't do anything? My Z3c has broken screen and only 1/3 of the screen is accepting touch, so I can't unlock the pattern to acces my files on PC. Phone doesn't have USB debugging enabled so I can't use ADB to "hack off" the pattern.
Alcedii said:
If you can boot up normally you can connect a mouse with an USB OTG cable and unlock your phone that way.
Click to expand...
Click to collapse
Yeah !
My z3c touch part has been water damaged, but I've been able to put my logitech mouse/keyboard wireless adapter...
I'm not able to save the phone, but it helps me to unlock the phone and save my data !
Antoine
tzelch said:
Hi guys,
The screen on my Z3C is broken.
I brought it to a repair shop, but they were unable to repair it, they've tried 4 different displays and the touch-input would not work.
So now i'm trying to recover my data, but i was using the Android encryption.
I can boot the phone into recovery and connect to it via ADB.
Is there any way to unlock and mount the data partition in the adb shell?
Or is there a way to unlock and mount the partition on my linux box if i dump the partition to my computer via netcat?
Thanks in advance!
Click to expand...
Click to collapse
I know how to fix Your phone. Had 2 pieces last month with same issue.
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Just remove this capacitor and make jumper in place of it.
100% working solution. It's just safety capacitor and sometimes it fails at screen changing.
You just need to take of shield from motherboard, cut out one corner to expose this capacitor, desolder it and make jumper.
Give me some info if it helped.

Is my XZ3 Hacked?

Hi everyone,
I installed infected flashtool app wa strying to flash my xz3, usb debugging was activated when windows detected a malware from the computer during flashtool setup while my phone was plugged, is there any possibillity to be hacked? and if so, is wipping data and factory reset would solve the problem? thank you all.
Rvn.
I believe so. If not we can solve anything here lol
Of course it's possible
ID the issue. Isolate your backup data drives from both machines until proven clean.
A factory reset won't get rid of flashed malware... a hacker's wet dream.
If so you need reflash with a clean rom copy.
Pachacouti said:
I believe so. If not we can solve anything here lol
Click to expand...
Click to collapse
Lol, after some pain and suffering...
Lol, but In android even if usb debugging activated you need to approve the access to it whenever a computer going to use it, a window pop up on your phone to either approve or deny which it didn't appear at all. So I'm safe I think?
ravncool said:
Lol, but In android even if usb debugging activated you need to approve the access to it whenever a computer going to use it, a window pop up on your phone to either approve or deny which it didn't appear at all. So I'm safe I think?
Click to expand...
Click to collapse
Well it isn't going to kill you, so you are safe.
As for the affected device(s)... they are scared.
Trust Windows security?
I mean, deny/allow window appears on phone not windows, I didn't allow because it didn't appear at all lol, sorry for my English
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I didn't get this at all, so computer got no access through USB debugging then phone is safe right loool
Dont feel safe JUST yet...
If the adb window for granting keys does not show, that could be a warning sign, that adb MAY still be hacked (if hacked at all)
disconnect fone, go into developer options. look for revoke permissions, then plug fone back in, tell me if you see the window again?
Sometimes it goes into the background and you cant see it in time so it shuts you out...
If all goes well, on pc,
adb shell (should give grant window in fone)
settings put secure install_non_market_apps 1
settings put global adb_enabled 1
settings put global setup_wizard_has_run 1
settings put secure user_setup_complete 1
settings put global device_provisioned 1
settings put global development_settings_enabled 1
then even after a flash, if you never flashed your bootloader, you wont need to continually grant keys
Thanks for your time and answers brother..
But to make it more clear, I wasn't at a point where it had to show up (ADB window on phone), I just opened the app flashtool, I have seen it getting online stuff from GitHub and getting ready, after that it started detecting the phone after Malware Warning appeared on windows, at this time I just removed the phone and it wasn't into any mode. Only usb debugging was active.
I hope I make it more clear, and waiting your answers. Thanks a lot.
You've a virus in your pc, so fone wont allow you to connect until you remove virus ?
Deal with the virus first, then we'll probably find out your fone is fine...
Flashtool MAY be seen as a virus in windows so you may need to disable some security settings, it may not be a virus at all :O
Edit, best doing flashtool offline btw
I love you man, really I appreciate your time and help, now it's fine. I understand. Thanks a lot guys.

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