Database Develop

USB issue

Hi,
I currently encounter a problem with my Optimus 2X.
I can use my usb port to load the phone but when I plug it in a computer (I tried with several computers running XP / seven / ubuntu ... and several cables). But my phone doesn't seems to be recognized by the computers.
I'm running 2.6.32.45 cyanogenmod. I wanted to go back to the original rom but my backup seems corrupted
Does anywone knows how I can go back to the original rom ? (hopping it will fix my usb issue ....)
regards.

Uninstall the old drivers, and download v3.6 from lg's site it has fixed this issue. =P
Sent from my LG-P990

Even if the coputer act like there is nothing plugged ? On several computer I used the phone wasen't recognized as a plugged peripheral (even a usb key).

I had the same problem, v3.5 of lg united driver was cqusing it , when I updated it got fixed just uninstall reboot and install 3.6 worked for a few more peps
Sent from my LG-P990

Thank's a lot it works perfectly !
I now encounter a new problem, when I try to update my phone using the LG software, it stops at about 30% (looks like it's impossible to connect the phone with the software).
Edit -> I've found an old stock rom and installed it on my phone : everything works perfectly thanks a lot !!!

Guys
I'm running CM Nightlies and I can no longer connect my phone to any pc via USB.
Some have said I would have to flash phone back to an original rom in order to fix then flash CM back over it?
Is this really only way as worried will lose all my internal drive stuff.

You can try to change your drivers it works very well !
If you wan to save your stuff without using USB you can use FTP thrue à WIFI to send stuff on your PC.

I got the same problem since about 4 months. When connecting the phone to the computer, no usb icon appears on the notification bar, also there is nothing happening in the device manager on the computer. Charging always works.
This is still confirmed after using different computers, different usb cables, different usb ports, and 4 different versions of the drivers (up to the most recent 3.6 drivers) even it should still show something even with no drivers. This also occurs in "software update" mode.
Also I tried different ways of plugging in the cable on the phone side (slow, fast, with pressure up/down/side).
This is with CM7, CM9alpha, and just for test also with MIUI.
The odd thing is, in this time span, it randomly worked about 4 times in these 4 months. Last time was just after I updated to CM9 alpha it worked the first time I plugged it in (was surprised with that), but it stopped working too.
For me it seems it's something with the usb chip set in the phone.
The problem here is, returning the phone for RMA will cause problems with CM on the phone, as they probably will say it's because of a custom rom, and there is no (easy) way to get stock rom with branding back on the phone (the only one maybe with a nandroid backup of stock from someone else?).

I'm having the same trouble as dedors. Absolutely no USB data connection. Can't get anything going in nvflash, smart flash, recovery, or when running normally. I've tried uninstall and reinstall the drivers, multiple cables, multiple computers, multiple OS including win7 xp and Ubuntu. USB debugging enabled, disabled, wiping the SD cards, trying with no external sd card. The only glimmer I've seen of it working was when I plugged it into my old XP laptop before and it prompted the computer to install a driver for the webcam that I'd mistakenly uninstalled. I tried cleaning out the USB port in case it had a bunch of lint stuck in it and the cable just wasn't sitting properly.
I don't know at what point it stopped working but it has had no serious abuse that could cause any physical damage.
Oddly it still charges just fine.
Can't return for RMA as it's running Cyanogen 9 and I've no easy way to get it back to stock. I also had this problem on Cyanogen 7. I could probably flash a stock rom onto the phone but I wouldn't be able to nvflash the original recovery.
A lot of people seem to have had USB trouble with this phone.
Happy to provide any logs that may help the diagnosis though you may have to explain how I can acquire them as I only know basic flashing.
Sorry for the lengthy first post, trying to be thorough.
Thanks in advance for any help offered.

I can't think of any solution to your problem (in my opinion it seems like a faulty USB port, it seems to be "popular"), but I can suggest you a workaround... it's actually the workaround I've been using cuz I also have trouble with USB... get an SD card and a USB to SD card adapter...
Or that ftp/wireless trick that was mentioned above, I actually don't know how to do this but I would definitely like to

Yeah that does seem to be the case. At least I can still flash roms and so on. So long as it lasts me the rest of the year I don't mind grabbing a new one then.
Anyone who knows about logs for trouble shooting, can you suggest a way that I might try to diagnose the problem. If I can be sure the port is stuffed and nothing I can do will fix it I'm ok with that but I'd like to know whether I should keep looking for solutions or give up on it.
Cheers.

Hello,
I've got a new issue with my phone updating CM10 and today it's impossible to boot.
I've tried to plug it on my computer in order to flash it but got the same probleme as the first post : nothing happened when plugged on my computers.
Does anyone got this 3.6 drivers somewhere ? seems that the new ones from LG didn't works ....

I have the same problem
I how bought my phone (LG P990), 6 months old, used. I come home and try to connect it to the computer and it won't be recognized. Somehow I manage over that code 1809 # * 990 # to enter the menu and play with the ports I was able to connect to the computer and do the official update to 2.3.4. over LG software.Once again, this comp will not recognize phone (only charging), but using code 1809 # * 990 # and tampering on port settings it was able to connect to the computer.
Now after some time do stupidity and Root my mobile phone(SuperOneClick) and install clockwork-5.0.0.3 and via zip CyanogenMod 9. I tried all the ways that exist but pc does not recognize the phone anymore. After some time, the official ICS update is coming, and now that you can not connect the comp how to update mobile phone. I do a recovery back to the official Android 2.3.4 (I had to change the partitions, 2.3.4 and ICS use different sized partitions) and I run a mobile phone that is again official 2.3.4 and try entering the menu (1809 # * 990 #) by tampering with ports settings I tried to make comp to recognize the phone but to no avail. I tried to change the usb cable, use a different USB port on comp but nothing, no response just recharging.
After googling I managed to find recovery from ICS V28g and I managed to install it to have a functional phone. I contacted 2 service both refused to accept phone because rooted. I tried all the tricks without battery holding vol + and - to enter into APX mode, nothing then Power and vol - S / W mode that worked but comp ga would not recognize until now even that does not work (appears LG logo and when S / W should appear then goes off) and all the other tricks that I found on the internet, reinstall the drivers, I do not know what else.
Oh yeah and I noticed entering the settings on mobu System Settings / About Phone / Software Information / Baseband version - unknown
Link to image-->h_t_t_p://s1.postimage.org/9317bfezz/2013_01_11_12_36_01.jpg

Hi,
I've found an old 3.6 driver, but nothing works even with it ... I think I must change my phone -_-

USB not working as expected under custom ROMs

Hello everybody
I'm having a problem. After ditching the first custom ROM (Pure Nexus) because Sygic App kept crashing, I wanted to go back to stock but noticed that I couldn't connect to my windows box via USB anymore. It would display the Nexus 6 device with an warning sign in device Manager. Since it had worked on stock it can't be a hardware issue.
So going stock through fastboot was out because no device was found. ADB also didn't find anything. So after going to LightROM, Sygic worked but I still can't connect via USB. The Nexus 6 is displayed in Windows Explorer but no storage underneath it. ADB still doesn't work and Wug's toolkit, as a consequence, can't work with the device either. I can't fiddle with USB options either, since LightROM doesn't pop up a USB notification and I just can't find the options in system settings.
So I'd like to flash via TWRP, which is installed, but for the life of me I can't find any of the TWRP flashable stock ROMs I see mentioned on the net. Also, there ought to be ZIP update packages since OTA doesn't work on rooted devices. Where can I find those?
Thank you

Marco2G said:
Hello everybody
I'm having a problem. After ditching the first custom ROM (Pure Nexus) because Sygic App kept crashing, I wanted to go back to stock but noticed that I couldn't connect to my windows box via USB anymore. It would display the Nexus 6 device with an warning sign in device Manager. Since it had worked on stock it can't be a hardware issue.
So going stock through fastboot was out because no device was found. ADB also didn't find anything. So after going to LightROM, Sygic worked but I still can't connect via USB. The Nexus 6 is displayed in Windows Explorer but no storage underneath it. ADB still doesn't work and Wug's toolkit, as a consequence, can't work with the device either. I can't fiddle with USB options either, since LightROM doesn't pop up a USB notification and I just can't find the options in system settings.
So I'd like to flash via TWRP, which is installed, but for the life of me I can't find any of the TWRP flashable stock ROMs I see mentioned on the net. Also, there ought to be ZIP update packages since OTA doesn't work on rooted devices. Where can I find those?
Thank you
Click to expand...
Click to collapse
If Fastboot cannot connect in the bootloader, it is nothing to do with the ROM. The ROM and bootloader are completely separate, so it is likely a USB hardware issue, or driver issue. Hardware could be PC Port, Nexus port or cable.
I recommend addressing your fastboot issue first rather than trying to work around it.

danarama said:
If Fastboot cannot connect in the bootloader, it is nothing to do with the ROM. The ROM and bootloader are completely separate, so it is likely a USB hardware issue, or driver issue. Hardware could be PC Port, Nexus port or cable.
I recommend addressing your fastboot issue first rather than trying to work around it.
Click to expand...
Click to collapse
I'm almost tempted to walk away from this whistling like I was never even here...
Even though I unlocked the device in fastboot, I completely forgot you'd have to boot into fastboot in order for that to work. As such I should have put this in the noob question thread. I do appologize for wasting your time so spectacularly.
Obviously, as soon as I did boot into fastboot, flashing stock worked like a charm.
Sorry 'bout that.

Marco2G said:
I'm almost tempted to walk away from this whistling like I was never even here...
Even though I unlocked the device in fastboot, I completely forgot you'd have to boot into fastboot in order for that to work. As such I should have put this in the noob question thread. I do appologize for wasting your time so spectacularly.
Obviously, as soon as I did boot into fastboot, flashing stock worked like a charm.
Sorry 'bout that.
Click to expand...
Click to collapse
Haha, no worries. Sometimes it is hard to see the wood for the trees.

No USB recognition at all, HELP.!

Hi, firts of all sorry for my english.
My sister give to me a BLU R1 HD 2GB RAM/16 ROM, it come without Amazon ads (so i think its OEM version). Its running BLU_R001UU_V21_GENERIC.
She told me that one day just not was recognized by PC to transfer files,photos, music. I make a wipe from recovery and still the problem no USB detection at all just charging, no sounds like new USB device was conected, no device on Device Manager.( i do this on diferents PC Windows 10, Windows 8, and Linux Elementary OS , Deeping OS)
I enable Developer Options and change MTP/PTP/Only Charge option and nothing happened; I opened the device to check the pins on the USB connector and check continuity and all seem like be perfect.
I thing that may be when was update to the last software something happen and lost USB recoginition, I want to Root the device and change Recovery but i see that the steps need connect the R1 HD to PC and make some things throw ADB console.
My question is: can i downgrade the original rom from SDcard in the actual Recovery.. to try recover the USB functions. or may be its something wrong on any internal chip that no make the USB conection.
Ty.

mykrov said:
Hi, firts of all sorry for my english.
My sister give to me a BLU R1 HD 2GB RAM/16 ROM, it come without Amazon ads (so i think its OEM version). Its running BLU_R001UU_V21_GENERIC.
She told me that one day just not was recognized by PC to transfer files,photos, music. I make a wipe from recovery and still the problem no USB detection at all just charging, no sounds like new USB device was conected, no device on Device Manager.( i do this on diferents PC Windows 10, Windows 8, and Linux Elementary OS , Deeping OS)
I enable Developer Options and change MTP/PTP/Only Charge option and nothing happened; I opened the device to check the pins on the USB connector and check continuity and all seem like be perfect.
I thing that may be when was update to the last software something happen and lost USB recoginition, I want to Root the device and change Recovery but i see that the steps need connect the R1 HD to PC and make some things throw ADB console.
My question is: can i downgrade the original rom from SDcard in the actual Recovery.. to try recover the USB functions. or may be its something wrong on any internal chip that no make the USB conection.
Ty.
Click to expand...
Click to collapse
I have not seen any other reports of usb dying after OtA update. You say you tried with different PC, what about using different usb cable?
But more bad news for your plans. If you have official v21 update, then you are not rootable anyway.

mrmazak said:
I have not seen any other reports of usb dying after OtA update. You say you tried with different PC, what about using different usb cable?
But more bad news for your plans. If you have official v21 update, then you are not rootable anyway.
Click to expand...
Click to collapse
I tried with diferents usb cables, and nothing happened.

mykrov said:
I tried with diferents usb cables, and nothing happened.
Click to expand...
Click to collapse
Do you know if any of them are sync cables??

codyalan said:
Do you know if any of them are sync cables??
Click to expand...
Click to collapse
They are USB cables that i use on others phones (lg 4x HD and Honor 6X) and work fine with those phones but not on my R1Hd

mykrov said:
Hi, firts of all sorry for my english.
My sister give to me a BLU R1 HD 2GB RAM/16 ROM, it come without Amazon ads (so i think its OEM version). Its running BLU_R001UU_V21_GENERIC.
She told me that one day just not was recognized by PC to transfer files,photos, music. I make a wipe from recovery and still the problem no USB detection at all just charging, no sounds like new USB device was conected, no device on Device Manager.( i do this on diferents PC Windows 10, Windows 8, and Linux Elementary OS , Deeping OS)
I enable Developer Options and change MTP/PTP/Only Charge option and nothing happened; I opened the device to check the pins on the USB connector and check continuity and all seem like be perfect.
I thing that may be when was update to the last software something happen and lost USB recoginition, I want to Root the device and change Recovery but i see that the steps need connect the R1 HD to PC and make some things throw ADB console.
My question is: can i downgrade the original rom from SDcard in the actual Recovery.. to try recover the USB functions. or may be its something wrong on any internal chip that no make the USB conection.
Ty.
Click to expand...
Click to collapse
I have the exact same issue... and it happened just after an OTA Update. After that it showed it was charging only when the phone was shut down.
No USB recognition whatsoever. PC/Mac. Tried several cables.... All USB modes... Factory Reset... Nothing made it work.
I contacted BLU with the issue. As soon as I have an answer (If ever) I will let you know.
If any of you know anything about this please share it here.
Oddly enough, After a cache wipe and factory reset, I have no ads on the lock screen. The app is running on the background but nothing shows up.

elcarmi said:
I have the exact same issue... and it happened just after an OTA Update. After that it showed it was charging only when the phone was shut down.
No USB recognition whatsoever. PC/Mac. Tried several cables.... All USB modes... Factory Reset... Nothing made it work.
I contacted BLU with the issue. As soon as I have an answer (If ever) I will let you know.
If any of you know anything about this please share it here.
Oddly enough, After a cache wipe and factory reset, I have no ads on the lock screen. The app is running on the background but nothing shows up.
Click to expand...
Click to collapse
I think if we can downgrade to a official rom under the actual recovery maybe that fix the USB. But all methods are under USB connection to PC.

mykrov said:
I think if we can downgrade to a official rom under the actual recovery maybe that fix the USB. But all methods are under USB connection to PC.
Click to expand...
Click to collapse
As far as I know downgrading is not possible without making the phone unusable. If by any chance that is possible maybe an update from an SD Card can work.

MI A2 Charge Mode Only When Connected to PC

Recently I noticed that my MI A2 couldn't connect to PC in MTP to backup some photos. This didn't happened before because I was successfully flash Havoc OS and did backup photos several times ago.
I also tried to connect my phone while in TWRP but it didn't detected in Windows. I checked Device Manager while trying to connect the phone to PC there is no Android Phone device popped up like usual.
What I have tried:
- Re-flash the ROM (didn't work)
- Change the cable (didn't work even with the original cable included with the phone)
- Change to other PC (didn't work)
- Enable USB debugging (didn't work)
Additional Note:
- MIA2 in HavocOS 2.8 latest build [Android Pie]
- Windows 10 Build 1903 latest update
- Xiaomi Driver is installed as I frequently flashing my phone.
- Somehow Headphone still working using Type-C Adapter to 3.5mm
UPDATE (5/1/2021)
Hi All,
Just want to give you quick update on what happened to my MI A2 at the moment.
After looking for a fix in several month and no solution found at all, I bought a new port connector.
I tried to swapped the port myself but the problem still exist with the new port.
I even tried to use port connector for Redmi 6X (its similar but have a slight different) and yet the problem still there.
My final conclusion that this problem may be located on its mainboard. Now I have change my phone to Mi 9T Pro and put the MI A2 on my desk drawer. The phone still works and charging normally but I can't use it for work because I need it to able connect to PC.

I had the same issue with stock pie, replacing the usb sub-board didn't solve anything, I'm still looking for a solution.

egantz09 said:
I had the same issue with stock pie, replacing the usb sub-board didn't solve anything, I'm still looking for a solution.
Click to expand...
Click to collapse
I just noticed this recently. The weird part is the headphone still works using adapter type-C to 3.5mm so I doubt it was physical problem with the port more like software thing.

same too
mark.dx said:
Recently I noticed that my MI A2 couldn't connect to PC in MTP to backup some photos. This didn't happened before because I was successfully flash Havoc OS and did backup photos several times ago.
I also tried to connect my phone while in TWRP but it didn't detected in Windows. I checked Device Manager while trying to connect the phone to PC there is no Android Phone device popped up like usual.
What I have tried:
- Re-flash the ROM (didn't work)
- Change the cable (didn't work even with the original cable included with the phone)
- Change to other PC (didn't work)
- Enable USB debugging (didn't work)
I suspect it may have something to do with the firmware but I haven't find any solution for this. Hope somebody can give me some suggestion about it.
Additional Note:
- MIA2 in HavocOS 2.8 latest build [Android Pie]
- Windows 10 Build 1903 latest update
- Xiaomi Driver is installed as I frequently flashing my phone.
- Somehow Headphone still working using Type-C Adapter to 3.5mm
Click to expand...
Click to collapse
i got same issue, its after update with build v10.0.13. before that version usb working fine, when i attach usb cable its can show usb option. now its only show grey (all disable). i think its bug in rom

I had this issue as well but after trying other ports it worked for me. The strange thing is that, the previous known failed ports will always not allow me to use MTP after PC reboots.
My PC is a Ryzen build if that of any help. I do not face this issue with my laptop which is an Intel build.

TechnoSparks said:
I had this issue as well but after trying other ports it worked for me. The strange thing is that, the previous known failed ports will always not allow me to use MTP after PC reboots.
My PC is a Ryzen build if that of any help. I do not face this issue with my laptop which is an Intel build.
Click to expand...
Click to collapse
My PC is also Ryzen but it wont detect in any port, also in my old laptop which is USB Port 2.0 and have Intel processor didn't work either like it used to be.

mark.dx said:
My PC is also Ryzen but it wont detect in any port, also in my old laptop which is USB Port 2.0 and have Intel processor didn't work either like it used to be.
Click to expand...
Click to collapse
I think it is worth trying to connect USB OTG and see if it works. I am curious about it.
It may also be possible that your ROM or maybe something along the way have made this issue. But hey this is just a guess. I am just as clueless [emoji853]
Maybe i would try
• Flash stock partitions except boot & system
• Format Data
• Revert back to stock (not really a [desirable] solution)

TechnoSparks said:
I think it is worth trying to connect USB OTG and see if it works. I am curious about it.
It may also be possible that your ROM or maybe something along the way have made this issue. But hey this is just a guess. I am just as clueless [emoji853]
Maybe i would try
• Flash stock partitions except boot & system
• Format Data
• Revert back to stock (not really a [desirable] solution)
Click to expand...
Click to collapse
I can't do flash at moment because I need to make backup in case of failure. This is my daily driver phone so there is important messages, photos etc.

egantz09 said:
I had the same issue with stock pie, replacing the usb sub-board didn't solve anything, I'm still looking for a solution.
Click to expand...
Click to collapse
The problem ia in the main board i used to bring my device to service centwr they change main board, if u noticed qc charger is not working and otg didnt qork as well

Shotg1 said:
The problem ia in the main board i used to bring my device to service centwr they change main board, if u noticed qc charger is not working and otg didnt qork as well
Click to expand...
Click to collapse
Slightly off-topic, does locking the BL and flash the stock ROM enough for the warranty to be "valid"?

does anybody using custom kernel have this issue ? I'm thinking to flash Hex kernel might solve the issue

mark.dx said:
does anybody using custom kernel have this issue ? I'm thinking to flash Hex kernel might solve the issue
Click to expand...
Click to collapse
Its issue of main board

mark.dx said:
does anybody using custom kernel have this issue ? I'm thinking to flash Hex kernel might solve the issue
Click to expand...
Click to collapse
Did you already clean your usb port?
You can carefully do that with a toothpick or something.
Sounds a little silly, but really there could be a lot of dirt in there. Resolved many connection and charging issues that way already.

Phil_Smith said:
Did you already clean your usb port?
You can carefully do that with a toothpick or something.
Sounds a little silly, but really there could be a lot of dirt in there. Resolved many connection and charging issues that way already.
Click to expand...
Click to collapse
Hi thanks for the suggestion but the port look clean to me. I borrowed my brother Pocophone charger somehow it keeps on off with the charge, but when i used mine its fine

It is not a hardware issue it is a kernel issue...upon boot a "chargeonlymode" file is created in sbin folder... I am a rookie at this but after a month of digging, 2 mia2's and 4 charger modules later, something is focing our phone into chargeonlymode. If i can find the solution I will post it

sparkplug619 said:
It is not a hardware issue it is a kernel issue...upon boot a "chargeonlymode" file is created in sbin folder... I am a rookie at this but after a month of digging, 2 mia2's and 4 charger modules later, something is focing our phone into chargeonlymode. If i can find the solution I will post it
Click to expand...
Click to collapse
I'm thinking to flash Hex Kernel to my phone but I still afraid it will bootloop.

Have you been able to solve the problem?
The same thing happens on my MI MIX 2S.

kof97 said:
Have you been able to solve the problem?
The same thing happens on my MI MIX 2S.
Click to expand...
Click to collapse
Hi, unfortunately no up until now.
I'm still using my phone just fine though but I still cannot connect it to PC.

I have the same problem but the file transfer works and the charge does not, I can't get back to stock because arb4 is active now is a mi 6x

broken USB and root

Hi
My 3t is oem unlocked, but the USB port is broken (you can charge, but pc will not see the device at all). Is there any way at at all to root it. A Google search doesn't give any useful hints.
P. S. I have tried several cables. Dash charge does not work either, only normal charge. I replaced the USB pcb in hope to solve the problem, but no good.

sunsetdk said:
Hi
My 3t is oem unlocked, but the USB port is broken (you can charge, but pc will not see the device at all). Is there any way at at all to root it. A Google search doesn't give any useful hints.
P. S. I have tried several cables. Dash charge does not work either, only normal charge. I replaced the USB pcb in hope to solve the problem, but no good.
Click to expand...
Click to collapse
I'm assuming you don't have TWRP installed, right?
You are screwed if you can't get your PC to connect to your phone to use the fastboot command.
But...
!! Warning - dangerous !!
You might be able to get the unbrick tool to connect to your phone (it uses a different way of connecting). And you could use it to flash TWRP to the recovery partition.
If you get things wrong you can really, really mess up your phone.
So, how badly do you want to root your phone?
Sent from my OnePlus 3T using XDA Labs

It is not the end of the world if it bricks. Is this unbrick tool also a pc based tool? Because I honestly think the USB chip is dead. Again dash charge is non functional.
No I don't have twrp, I lost it last time it updated update: just tried the unbrick tool. Pc will not detect the device at all

sunsetdk said:
It is not the end of the world if it bricks. Is this unbrick tool also a pc based tool? Because I honestly think the USB chip is dead. Again dash charge is non functional.
No I don't have twrp, I lost it last time it updated update: just tried the unbrick tool. Pc will not detect the device at all
Click to expand...
Click to collapse
Sorry to hear that.
Sent from my OnePlus3T using XDA Labs