Develop Bugs

[Q] Computers No longer recognize device no more recovery

So after several weeks trying to figure out what is wrong with my device I came to the conclusion that the USB port on my GNex went bad
here's a few reasons why:
-GNex No longer chargers when plugged in the wall outlet tried several OEM and non OEM USB cables
(but will somewhat charge if the phone is turned off but very slowly and has an error) It shows the battery icon then
it will flash twice the battery charging icon then back to the battery icon with the bolt in the middle and will do that through out the night.
Had a custom rom on there tried changing roms but my computer no longer recognized it and so i've installed removed various drivers
and tried different PC ports and nothing would let it recognize so I manually download a rom on the phone but it wouldn't install.
So I was finally able to odin back to factory stock but that still didn't do anything not only I can no longer go into recovery because it seems to
not have one so I'm stuck and it's getting on my nerves because the only way I can charge it while it's on is plugged into the computer.
I'm my money is that USB port on the phone is malfunctioning so I'm trying to relock the bootloader but can't find a through the terminal, because ADB does not work. Technically the phone still has manufacture warranty. So any help would be appreciated. Thanks guys

Does your computer recognize it in fast boot?
Sent from my Galaxy Nexus using xda app-developers app

I had the exact same issue with an old T989 (T-Mo SGSII). Same symptoms and everything. What got me through the insurance claim was that I told them that the phone was doing an OTA but somehow it failed and it was stuck at the ODIN screen. What really happened was the USB port gave way while restoring to stock which caused the soft brick, but after that the USB port was completely nonfunctional. Try re-positioning the USB cable, the port might be making bad contact with the pins. Other than that, I would just ship it as is since they hardly check that the phones are rooted or in your case, an unlocked bootloader.

No it doesn't recognize it in fastboot or anything it says unknown device. As far as sending it back in I've been on the samsung website trying to request a service repair, but I've also purchased the phone on CL. But I didn't have a problem with it for several weeks so I know it really wasn't a defective unit. Yeah, I thought about reposition the USB cable to no avail.
I didn't think about using that... how did you manage to get an RMA or something to get it replaced

So you can use the device itself fine? Cab you go into play store? Download booot unlocker . it locks/unlocks the bootloader from the phone itself
Sent from my Nexus Prime

Questions go in Q&A
Thread moved
Thanks
FNM

My apologies if it was in the wrong thread. Yes I'm able to use the phone fine and everything it's just the charging and recognition that's causing problems.
Another question what do I need to be able to open a repair request from samsung or how do I go about it. went to the website but all it does is take me to FAQs?

Well unfortunately boot unlocker won't work because I don't have root and I can't root my phone through ADB or anything like that because like before PCs won't recognize phone at all unless there is a method I can use through the terminal editor

I don't want to hi-jack your thread, but I am also having a similar issue.
I am running CM 10.0.0 but the cell phone will charge, but will NOT connect to the computer. I have tried two different cables and on 3 different USB ports on two different computers. I have the Samsung drivers downloaded and installed. I did not have this issue before the unlock/flash of CM. Is this is a known issue? Is there anyway around it?

I'm starting to think its a USB port issue

If it hasn't been said before, this is a very common problem, it even happens with a few Samsung phones. It's not software related, all hardware, the micro USB port is lousy.
Unless you want to work with Samsung, who, based on my experience, will probably want to charge you "because you broke it", there's the incredibly hard-to-find Pogo Dock or the inductive charging mod, which is actually kinda neat I may do that, I already have all the touchstone stuff...
There's also DIY replacement of the USB daughter board or whatever the exact term is.
In any case, Samsung *might* help you, for a decent fee and 2 weeks' (or more) time.

Yes, try to analyze USB port pins for damage, dirt, bent, anything that can cause a lousy connection (or none whatsoever)
Sent from my i9250

Yeah, I mean I would have to figure something out because I can't transfer files and the only to do it is to upload them to the cloud which is not optimal and real pain.

well out of nowhere USB starting working and charging now normally. So that's cool I'm glad now just to wait till ubuntu comes out.

[Q] Unknown device found when connecting gnex..

When i connect my gnex to the computer, a msg pops up saying "device connected has malfunctioned........". But when i connect my Xperia X8,it works normal and fine with all adb and fastboot functions working normal.
I tried uninstalling drivers but it failed too Moreover,whenever i connect my device with android debugging enabled,nothing happens..It only charges my phone via usb but adb doesn't works.I see no response whenever i connect my phone..pls help me..
one more thing, i tried flashing 4.2.2 factory image..but for flashing image also my computer needs to recognise my phone..pls help me

Strange I would clean the USB port re seat the battery and maybe try on a different pc.

freakb18c1 said:
Strange I would clean the USB port re seat the battery and maybe try on a different pc.
Click to expand...
Click to collapse
Ya its strange..I tried each n everything including cleaning ports and changing too!! The most weird part is except my GNEX, all my other devices works fine

I have been dealing with this very same issue for about a month.
So far, without any success, I've tried:
- connecting my gnex to computers running windows 8, windows 7 and Ubuntu. (Removed and reinstalled all drivers using multiple routes.. Gnex toolkit, Samsung drivers, pdanet etc.)
- I've cleaned the USB port multiple times (gentle toothpick, canned air, rubbing alcohol)
- I've disassembled the phone and very carefully removed the USB flex cable to check for damaged ribbon cables.
- reverted to stock ROM
- tried both CWM and TWRP recoveries
I'm now out of ideas. However, there is a replacement USB flex cable on amazon for roughly $7. This is my next and probably final option as I'm no longer on contract with any service provider and use my gnex as a WiFi/sip device.
Sent from my Galaxy Nexus using xda premium

georgeascott said:
I have been dealing with this very same issue for about a month.
So far, without any success, I've tried:
- connecting my gnex to computers running windows 8, windows 7 and Ubuntu. (Removed and reinstalled all drivers using multiple routes.. Gnex toolkit, Samsung drivers, pdanet etc.)
- I've cleaned the USB port multiple times (gentle toothpick, canned air, rubbing alcohol)
- I've disassembled the phone and very carefully removed the USB flex cable to check for damaged ribbon cables.
- reverted to stock ROM
- tried both CWM and TWRP recoveries
I'm now out of ideas. However, there is a replacement USB flex cable on amazon for roughly $7. This is my next and probably final option as I'm no longer on contract with any service provider and use my gnex as a WiFi/sip device.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Is your problem fixed now?

One more weird situation has begun..my gnex charges itself(even though i haven't connected any charger)..it actually doesn't charges but it seems as if i am really charging it! This happens after every few minutes..

No. Still without success. Have not yet ordered the replacement part.
If your biggest issue is transferring files though, there are several apps like Google drive and dropbox that can come in handy as well as file explorers that allow network access over WiFi (I'm about to us ES file explorer to transfer a 2gb file... Hopefully)
From what I've read here on xda and elsewhere, this issue will likely lead to a complete failure of the USB port, meaning no charge either. Best of luck to you that this doesn't happen.
**edit - if you are already rooted, be careful not to undo it, because I've not found a way to root without USB. Also, there is ADB over WiFi, I just haven't messed with it.
Sent from my Galaxy Nexus using xda premium

Exactly ! i am facing the same situation i.e. sometimes my phone charges and sometimes doesn't..even when connecting to computer ,adb doesn't work and it may charge the phone sometimes..
Is my gnex's USB port damaged or is it software related issue?

http://www.ifixit.com/Guide/Repairi...+LTE)+Micro+USB+Charge+Port+&+Main+Mic/9641/1
Sent from my Galaxy Nexus using xda premium
The phantom charge is another symptom of the faulty USB port. I've yet to experience it myself.
Here's more about it:
http://code.google.com/p/android/issues/detail?id=23789
And the part: (I think)
http://www.amazon.com/gp/aw/d/B009X6CZJG/ref=mw_dp_mpd?pd=1

georgeascott said:
http://www.ifixit.com/Guide/Repairi...+LTE)+Micro+USB+Charge+Port+&+Main+Mic/9641/1
Sent from my Galaxy Nexus using xda premium
The phantom charge is another symptom of the faulty USB port. I've yet to experience it myself.
Here's more about it:
http://code.google.com/p/android/issues/detail?id=23789
And the part: (I think)
http://www.amazon.com/gp/aw/d/B009X6CZJG/ref=mw_dp_mpd?pd=1
Click to expand...
Click to collapse
What does "phantom charge" means?

By phantom charge, I mean that symptom you described of your phone saying it is charging even when it is not plugged in.
I have ruled out software issue for my phone, and likely your phone as well but that is your decision. To me, this is definitely a hardware issue.
The part I linked to is twice as expensive as I remember. Perhaps do some more searching for a better price.
Sent from my Galaxy Nexus using xda premium

[Q] 32gb Flo with USB OTG and data issues

Hey folks, I have a N7 with some issues. I'm bashing my head against the wall on this one. I bought a 2nd gen N7 with a broken screen from some crook on eBay. He neglected to discuss it's other problems, however this is what I have. I replaced the screen, but even before doing so I found that a USB OTG mouse was not recognized (it works on my 1st gen), then I tried my little BT keyboard, BT wouldn't pair... Plug the tab into a PC and the PC completely ignores it. No device in device manager, I can even go to the port the tab is on is device manager and it shows nothing, not even current draw. The tablet does however charge on the PC, and it for some reason thinks that it is on AC charging, not USB. I have tried this on several computers with almost identical results. On a PC with USB 3 ports though, device manager sees it, just says that the device is unrecognized and may have a hardware problem.
So, I managed to get it to connect MTP one time by slightly twisting the USB cable. I then determine it must have a bad USB port, so I ordered some SMD USB sockets when I got other parts for a different project. I replaced the USB port tonight, and nothing changed, it is exactly the same. No data, always thinks it's on AC. On a whim I tried USB while in the bootloader, and it installs the fastboot drivers just fine and I am able to send fastboot commands.
After finding this, I figure it has to be something software or firmware related, so I flash it via fastboot back to bone stock. Reboot system and still no data connection, still thinks it's always on AC. I'm about at my wits end with it. I know there are other ways to move data to the tablet, but only having access to ADB via wifi is lameo and I happen to use USB host.OTG a lot.
Does anyone know what I am missing? I'm thinking it has to be something in the firmware at a level deeper than most the roms and images go. The PO is had it unlocked and cleanrom flashed. I have since tried AOKP, stock 4.4.4, now PA.
On a side note, if there is no fixing this SOB, do any of you know which of the flo roms have native wifi ADB? At least that will help...
Thanks,
Jason

No one has any ideas? No one else has had this issue? What it seems to me is that it is stuck in "USB fast charge mode" that's the only reason I can think that it would think it was on AC still even when on USB. I have tried three different kernels though now and enabled USB fast charge then disabled it, but it doesn't help.
Is it possible for someone to have put it in fast charge mode and made it stick regardless of kernel changes?
Just looking for ideas. Thanks folks!
Later,
Jason

I have exactly the same issue as yours! I couldn't connect my N7 via USB to PC. Gave me USB device not recognised error. I even fastory reset it. However, one time I did twist the USB cable and my device was recognised and it seemed to work fine during that day. I also managed to flash Android L developer's preview on top of that. The following day I started getting the same issue and haven't been able to resolve ever since. Even in fastboot, my device doesn't get recognised. It's the most frustrating thing ever!

Yeah, it definitely sucks. I was convinced it was the USB socket since twisting brought it alive that one time. However, I replaced my connector and it is the same. I then took it apart again and inspected all the traces and solder joints near the USB connector. I was still certain that the twisting meant it was a physical problem. It wasn't until much later that I found that fastboot worked.
I have done a ton of research trying to find an answer, but most everyone just pawns it off as a driver problem. I have tried every fix those people have offered, but it is never seen by the PC on USB 2, and only shows up as "device not recognized" on USB3. I have tried several different computers, but today I'm going to try an old XP machine. Several people seem convinced these issues are due to Win7. I'll let you know if I find anything.
Later,
Jason

jacampb2 said:
Yeah, it definitely sucks. I was convinced it was the USB socket since twisting brought it alive that one time. However, I replaced my connector and it is the same. I then took it apart again and inspected all the traces and solder joints near the USB connector. I was still certain that the twisting meant it was a physical problem. It wasn't until much later that I found that fastboot worked.
I have done a ton of research trying to find an answer, but most everyone just pawns it off as a driver problem. I have tried every fix those people have offered, but it is never seen by the PC on USB 2, and only shows up as "device not recognized" on USB3. I have tried several different computers, but today I'm going to try an old XP machine. Several people seem convinced these issues are due to Win7. I'll let you know if I find anything.
Later,
Jason
Click to expand...
Click to collapse
Try flashing 4.4.2 factory image. Maybe it starts working. For me, issues started 4.4.4+. currently I am stuck on Anroid L preview

Quick update, I asked Scott at Asus if he could give us any ideas, he said base don everything I told him that I had tried that it seems likely that it is a hardware problem with the USB board. I'm still not convinced, but the USB board is going to be my last resort.
Other than that, I tried the tab on a win XP computer and XP sees it as "unrecognized device" says that the USB needs unplugged/replugged and if that doesn't work to replace the device... I would think that the data pins are shorted or something, but mine works in fastboot, that is what has me stumped!
I'll try flashing 4.4.2.
Thanks,
Jason

Well, I just flashed back to 4.3.0 which looks to be the original software for this device. It did not behave any differently. I guess I am going to have to look into a new USB board. The things are expensive though, hopefully I can catch a decent used one for a good price. I'll let you all know if I order one and if it solves it.
Later,
Jason

New board is expensive. *sigh*

Yes they are, and I wouldn't trust ebay as far as I could throw it. I would hate to buy a used one and find out it has the same issue. I have another email into Scott asking if it is possible to buy parts direct from ASUS, and if so, what the board might cost. I'll keep you posted.
Later,
Jason

I heard back from Scott at Asus. They do not sell any parts. He suggested eBay... I guess I will start a saved search and see if I can catch one for a reasonable price. I can't see dropping $80 on a USB board. I guess if it doesn't fix it I could resell it... Still is retarded. This will make what this tablet has cost me much more than a brand new one Damn the crooked eBay sellers!!!
Later,
Jason

jacampb2 said:
I heard back from Scott at Asus. They do not sell any parts. He suggested eBay... I guess I will start a saved search and see if I can catch one for a reasonable price. I can't see dropping $80 on a USB board. I guess if it doesn't fix it I could resell it... Still is retarded. This will make what this tablet has cost me much more than a brand new one Damn the crooked eBay sellers!!!
Later,
Jason
Click to expand...
Click to collapse
Oh that's awful! I can't believe they don't sell replacement parts! I guess I have to live with a broken N7. I just hope Google pushes official L release OTA to devices running L preview.

I had a similar issue once. Turned out that MTP mode wasn't selected. Storage >Menu button > MTP should be selected.

S3 (T-Mobile) has no OS installed and PC will not recognize it.

I'll try to keep this short as possible but will answer questions as needed if I get any replies.
This happened a while back, after I had gotten a brand new Note 3, so this isn't my primary device anymore. I was messing around with it after I'd gotten my new phone and somehow during the process of wiping/installing a ROM I royally screwed up and in the end, my S3 (T999) all of a sudden has no OS on it, and as an added bonus, it cannot be detected by any PC. I don't recall exactly how this happened, but in the several devices I've owned, and the several hundred roms I've probably flashed, no mistake I've ever made has ever looked like this.
I guess potentially good news is that it does turn on, and I can get into both stock recovery and download mode, but when I connect it to the PC, no PC knows wtf it is, and gives a "USB Device Not Recognized" error every time. PC doesn't recognize it so it obviously doesn't know what drivers to use, etc.
Can I repair this myself? I figured since it boots into recovery/download I may have a chance but it looks quite bleak. I have tried absolutely everything I can think of, so I will greatly appreciate anything that maybe points me in the right direction of what to do, unless it's a total loss.

Does the phone charge when connected to a power source? You tried computers with different operating systems? Tried different USB cables and USB ports on the computers?
It could be a damaged USB port.

audit13 said:
Does the phone charge when connected to a power source? You tried computers with different operating systems? Tried different USB cables and USB ports on the computers?
It could be a damaged USB port.
Click to expand...
Click to collapse
It happened a while ago so I can't recall exactly how many PC's it's been attempted on, but I'm pretty sure I've tried this on at least two or three other PC's. It is something to try again however, and I will double check. That, and different USB cables. It never occurred to me this could just be a bad USB port/cable. My next step was going to be to try it on a Linux VM as I don't have a computer right now running Linux.
Also, I charged it for a few minutes using a battery pack and I was surprised to see the battery LED light up red.. if I remember correctly that means it's charging.

Yes, as long as the led stays on and is red, it is charging.
Report after you've had a chance to conduct more tests.

no USB recognition

Hi.
After searching and testing for hours I don't know how to proceed...
I can't access my phone via USB anymore. The phone isn't detected, no change in device manager on Win7. Only Win8.1 says it found an unknown device.
Quick Charge also does not work like before, but normal charging works stable on every cable.
On the phone, no connection info pops up. I had to set MTP in the developer settings. But it does the charging vibration.
Some testing before, the device was detected in about 1 of 10 tryings, but only with the original cable.
But now, this also doesn't happen anymore.
It worked for about 4 times in a row, after I flashed a 20g flashable kdz over the 20d, but stopped working then.
Could the method that activates MTP functionality be corrupted? (in download mode it also doesn't work)
This all happens between updating to mm and now.
The phone is unlocked and rooted. I use an extended battery and a SD card. A reset didn't help.
The pins of the port look ok. None of the solutions I found did help.
Could the controller or parts of the port be destroyed?
Could my Aukey QC 3.0 car charger do some harm to the device? Maybe when being connected while starting the engine or something like this?
Is the warranty for hardware problems like this void when unlocking the bootloader?

Phantom272 said:
Hi.
After searching and testing for hours I don't know how to proceed...
I can't access my phone via USB anymore. The phone isn't detected, no change in device manager on Win7. Only Win8.1 says it found an unknown device.
Quick Charge also does not work like before, but normal charging works stable on every cable.
On the phone, no connection info pops up. I had to set MTP in the developer settings. But it does the charging vibration.
Some testing before, the device was detected in about 1 of 10 tryings, but only with the original cable.
But now, this also doesn't happen anymore.
It worked for about 4 times in a row, after I flashed a 20g flashable kdz over the 20d, but stopped working then.
Could the method that activates MTP functionality be corrupted? (in download mode it also doesn't work)
This all happens between updating to mm and now.
The phone is unlocked and rooted. I use an extended battery and a SD card. A reset didn't help.
The pins of the port look ok. None of the solutions I found did help.
Could the controller or parts of the port be destroyed?
Could my Aukey QC 3.0 car charger do some harm to the device? Maybe when being connected while starting the engine or something like this?
Is the warranty for hardware problems like this void when unlocking the bootloader?
Click to expand...
Click to collapse
Don't know if that will actually help but just give FWUL a try.
Link http://tinyurl.com/FWULatXDA
This is a live ISO where you don't need any drivers etc. If you have a physical defect it will not help but to exclude windows + driver issues it's worth a try
#
Sent from my LG-H815 using XDA Labs

I gave that a try but it didn't help.
I am totally confused, which type of (bad) usage could result in such a behavior...
It also do not detect my Flir One thermal cam anymore.
How can I figure out if it is based on soft- or hardware?

im having a very similar issue with my g4 , it charges very slowly and shows charging from a USB source instead of AC when plugged to a charger, quickcharge stopped working, and my pc wont recognize it.
i think the problem is a damaged usb port

unleashurfreak said:
im having a very similar issue with my g4 , it charges very slowly and shows charging from a USB source instead of AC when plugged to a charger, quickcharge stopped working, and my pc wont recognize it.
i think the problem is a damaged usb port
Click to expand...
Click to collapse
Today I was in a repair shop for mobiles and the guy heated up the internal pins of the usb port with a soldering iron to exclude a problem with the connection there, but it didn't help.
Next would be to electrically meassure the external pins against the internal pins, to be sure there is nothing broken. But I think, I will send it to LG to check the device for the concrete issue.
The guy at the service said, it could be that some of the flashs did destroy the function which calls up the data connection and that they can do a complete reflash without using the usb port.
But... he also said that the diagnosted issue could be out of my warrenty due to the unlocked bootloader.
If you want to exclude the usb port as a problem, it is quite easy to change the usb port for someone with a good soldering equipment. The port itself does only cost a pocket money and there are some detailed videos on youtube for this. good luck ^^

Phantom272 said:
Today I was in a repair shop for mobiles and the guy heated up the internal pins of the usb port with a soldering iron to exclude a problem with the connection there, but it didn't help.
Next would be to electrically meassure the external pins against the internal pins, to be sure there is nothing broken. But I think, I will send it to LG to check the device for the concrete issue.
The guy at the service said, it could be that some of the flashs did destroy the function which calls up the data connection and that they can do a complete reflash without using the usb port.
But... he also said that the diagnosted issue could be out of my warrenty due to the unlocked bootloader.
If you want to exclude the usb port as a problem, it is quite easy to change the usb port for someone with a good soldering equipment. The port itself does only cost a pocket money and there are some detailed videos on youtube for this. good luck ^^
Click to expand...
Click to collapse
Thanks i think i'll give this a try