Develop Bugs

[Q] Phone not detected by computer when connected via USB

I was flashing several different ROMs last week so I could try them out first hand. I settled on Universe ROM. Now my phone is not detected at all, by any computer, whether in Android Or Odin mode makes no difference. I flashed back to Calkulin's E4GT2 ROM, which was already on my SD card, still no worky. Please help?!?!?!?!

ElectriCole said:
I was flashing several different ROMs last week so I could try them out first hand. I settled on Universe ROM. Now my phone is not detected at all, by any computer, whether in Android Or Odin mode makes no difference. I flashed back to Calkulin's E4GT2 ROM, which was already on my SD card, still no worky. Please help?!?!?!?!
Click to expand...
Click to collapse
Uninstall and reinstall drivers... Also try another usb cable (This has happened to me as well, did these steps and she worked!) I am on windows 7 about half the time (Ubuntu 12.10 the rest of the time) so i'm always able to get into it some how.

Tried that already
milky1112 said:
Uninstall and reinstall drivers... Also try another usb cable (This has happened to me as well, did these steps and she worked!) I am on windows 7 about half the time (Ubuntu 12.10 the rest of the time) so i'm always able to get into it some how.
Click to expand...
Click to collapse
Yeah, I've tried those steps before, again and again, on different PCs with different cables, using a nice high quality one now, still no dice. even when i go turn on USB Storage in settings i still get no detection by any computer. My phone only charges so i cant wipe my phone or anything because Odin never sees it.

Same here
ElectriCole said:
I was flashing several different ROMs last week so I could try them out first hand. I settled on Universe ROM. Now my phone is not detected at all, by any computer, whether in Android Or Odin mode makes no difference. I flashed back to Calkulin's E4GT2 ROM, which was already on my SD card, still no worky. Please help?!?!?!?!
Click to expand...
Click to collapse
I have a similar issue. This happened just after I rooted my phone. No USB connetion.....more or less. I'm now running Windows 8 and when I installed the drivers and connected my phone Windows starts the installation and it detects the SAMSUNG USB Composite Device and the SAMSUMG Mobile Modem but I can't access the SD card or internal memory. I changed the cable and reinstalled the drivers. I even installed Kies and it says that my device is not supported....any more ideas?

have you checked to see if you are in the "AP" mode when you dial ##8778#, you need to have a stock dialer for the codes to work on some custom roms the dialer codes will not work.
Default is set to"AP"
"AP" <----....xfer files
"CP" is used when programing to other carriers..etc...via CDMA Workshop.......
"ALL" <-----some people like to use this setting

didn't work
Unknown Zone said:
have you checked to see if you are in the "AP" mode when you dial ##8778#, you need to have a stock dialer for the codes to work on some custom roms the dialer codes will not work.
Default is set to"AP"
"AP" <----....xfer files
"CP" is used when programing to other carriers..etc...via CDMA Workshop.......
"ALL" <-----some people like to use this setting
Click to expand...
Click to collapse
I tried this as well. it was set to AP. tried setting to ALL and then back to AP. neither setting makes a difference.

Nother thought.. have you tried different USB ports as well?

YES
milky1112 said:
Nother thought.. have you tried different USB ports as well?
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Click to collapse
Yes. This problem persists not just on my PC (all ports) but laptop (same) as well as work PCs and my friends'. My phone will now only charge. No computer "sees" it. Even in Odin Mode, Odin won't pick it up.

ElectriCole said:
Yes. This problem persists not just on my PC (all ports) but laptop (same) as well as work PCs and my friends'. My phone will now only charge. No computer "sees" it. Even in Odin Mode, Odin won't pick it up.
Click to expand...
Click to collapse
I had this problem before with my Windows 7 computer.. I had to wipe the drivers from the computer.. Reinstall them again.. Changed cables and suddenly worked. (I think i did a restore back a few days to when it did work as well.) TBH i don't have many other ideas.

ElectriCole said:
Yes. This problem persists not just on my PC (all ports) but laptop (same) as well as work PCs and my friends'. My phone will now only charge. No computer "sees" it. Even in Odin Mode, Odin won't pick it up.
Click to expand...
Click to collapse
I had the problem when I was running the ParanoidAndroid ROM, I couldnt tell you how many times I odin'd EL26 and clean flashed. My usb worked fine after flash until I installed my apps using TB. So I went app for app, installed an app, plugged into my laptop. For me it was the simi clock widget whenever I installed that it would no longer link up to computer. I uninstalled it and am now back to normal.

Same here with Jedi Jelly 4 |4.1.2||Flashbar|| 1|17
Please help.

Samsung phone are REALLY picky about what cables you use. Some cables will only charge the device when you plug into USB, others will allow you to interface with a PC. The stock cable that came with your E4GT is the best to use, also the HTC smartphone microUSB cables work too. Hit and miss with LG and Motorola cables.

Do you have extweaks on that rom? If so you can force it to hook up thru the usb settings section.
When I originally rooted the same thing happened. It was almost like it had no setting to hook up to a PC. Only fix I found was driver sweeping the pc, reinstall the drivers, and switching roms untill one hooked up again. Repeat the driver sweep for each rom. It was a hassle but it worked. Landed on the blu kuban.
E4GT on Blu Kuban FI27, running XDA app.
"This is the Droid I have been looking for!"

agent852 said:
Samsung phone are REALLY picky about what cables you use. Some cables will only charge the device when you plug into USB, others will allow you to interface with a PC. The stock cable that came with your E4GT is the best to use, also the HTC smartphone microUSB cables work too. Hit and miss with LG and Motorola cables.
Click to expand...
Click to collapse
really? because I've been having the same issue and I haven't done any mods or anything with my phone yet...pretty stock. But I took it to a boost near me and the clerk plugged it at it got detected in no time.
I plugged other devices into the same USB_port with the same cable and the port and cable seem to be fine in my computer and no go, got the latest driver still nothing, and at some point I tryed to older drivers and still nothing.
I guess i'll have to try another uUSB cable. I only have one laying around
am running Vista x64, the pc at the store was running 7 x64 btw, not sure if that makes any difference

agent852 said:
Samsung phone are REALLY picky about what cables you use. Some cables will only charge the device when you plug into USB, others will allow you to interface with a PC. The stock cable that came with your E4GT is the best to use, also the HTC smartphone microUSB cables work too. Hit and miss with LG and Motorola cables.
Click to expand...
Click to collapse
Hi ALL....
I am using Micromax A56 phone... recently my pc is not recognizing my phone for viewing files through windows explorer... but it does only charging perfectly... i am using the same USB cable and pc with which I was able to view files of storage through pc..
Can someone help me to resolve this issue....
Thank you,,,
Rajesh

I've had same issue with Samsung Galaxy S4 (I9506). After a week of trying all available custom and official rom's I've followed pariah1570 advice to uninstall some apps and it worked! Great thanks. I don't know yet which app caused this problem, but I'm installing it one by one and checking.

[Q] Epic 4G (D700), ODIN and "Unknown Device"

Okay i have seen similar posts around, and I apologize if this bothers anyone but when I post a thread asking for help, its because I've tried most solutions and have gotten nowhere. I recently bought one.of.these devices and I have to say for an old 1GHz device, its pretty darn smooth! (Got it for my girl who broke her phone. Cost $20 MINT screen, and some scuffs.on the trim believe it or not, fully functional, clean ESN)
I love for all devices in the house to be rooted and off that dreaded Gingerbread android. I have been stuck since i got it trying to use ODIN to flash CWM, and root it to flash a JB based rom. Problem is i installed the drivers, got the ODIN version required, have the CWM tar file, etc, the phone gets detected while on in ADB, normal file transfer way and so on. BUT Download Mode? Nope, i get the dreaded "Unknown Device" issue.
Now as I always read before annoying others, I read that switching the USB cable helps. I've tried 8 USB cables, and no go. 2 Samsungs (i read those are #1 NO GOs), 3 LG cables (device doesnt appear at all), and 3 non brand. No good.
I know Mobile Odin wont work, I rooted it using Framaroot.apk for now, but I need CWM for the rom flashing part.
So now that its 2013, is there really no other way other than ODIN? I tried using ROM Manager, it flashes but doesnt do a thing except boot into stock recovery (miracle no bricks or bootlooping). If I had Linux on my PC, will it get detected or its just the darn cable?
OR is there a specific USB cable brand I should go for that is guaranteed to work? I dont mind buying it just have been waiting to make sure.
Any help or advice is greatly appreciated.

Most people recommend using a BlackBerry cable
Sent from my SPH-D700 using Tapatalk 2

jeffreyjicha said:
Most people recommend using a BlackBerry cable
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
Thank GOSH I read your response in time! I am currently at BestBuy and was going to buy a totally different brand USB. Hopefully they have them here.

Crossvxm said:
Thank GOSH I read your response in time! I am currently at BestBuy and was going to buy a totally different brand USB. Hopefully they have them here.
Click to expand...
Click to collapse
I use this cable and have had zero issues. http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=5458&seq=1&format=2

Well there's good news and bad.
Got an official BlackBerry USB cable.
Bad is the device is STILL not recognized.
The drivers have been properly installed, there is no updating the drivers manually, effing Windows won't let me. What the hell can I do now?
If only Mobile Odin worked, or there were other methods, I wouldn't be going thru this mess...
Like where did I go wrong?
I would swap out Windows to Linux, but I don't see how that will get the device detected.
Matter of fact I was trying to install a Linux based OS from my flash drivd, and it corrupted it. Theres 8gb Ill never see again...
Any other ideas? Will Linux pick up the device?
EDIT: This USB unlike the others BRIEFLY detects it as a USB Device, then goes back to unknown when I uninstall it thru Device Manager

Crossvxm said:
Well there's good news and bad.
Got an official BlackBerry USB cable.
Bad is the device is STILL not recognized.
The drivers have been properly installed, there is no updating the drivers manually, effing Windows won't let me. What the hell can I do now?
If only Mobile Odin worked, or there were other methods, I wouldn't be going thru this mess...
Like where did I go wrong?
I would swap out Windows to Linux, but I don't see how that will get the device detected.
Matter of fact I was trying to install a Linux based OS from my flash drivd, and it corrupted it. Theres 8gb Ill never see again...
Any other ideas? Will Linux pick up the device?
EDIT: This USB unlike the others BRIEFLY detects it as a USB Device, then goes back to unknown when I uninstall it thru Device Manager
Click to expand...
Click to collapse
Are you plugging into a port directly on the motherboard? (IE: A port on the back of the machine.) Using an emulated port or hub can cause this at times.
FYI, there are 2 drivers. One is for when the phone is fully booted in Android. The other is the driver when in download mode. Have you tried using another machine?
Sent from my Nexus 7 using Tapatalk 2

I think your issue is driver related. I had similiar issues and updated the wiki with the drivers that ended up working for me.
Sent from my SPH-D700 using xda app-developers app

Help please!

So I have the Tmobile variant of the S3 and I have tried everything and spent countless hours trying to fix my problem. My phone will not connect to my computer after I tried with different cables and going through the phone utilities. I also did what other forums said and I had no luck. The binary count is at 10 because I tried to root this phone long time ago and I was unsuccessful. The device is not rooted because I checked if I had root access. The phone will only charge when I connect it to the computer and I need it to update to the stock 4.3 from Tmobile using odin. Any help??

rrravipatel said:
So I have the Tmobile variant of the S3 and I have tried everything and spent countless hours trying to fix my problem. My phone will not connect to my computer after I tried with different cables and going through the phone utilities. I also did what other forums said and I had no luck. The binary count is at 10 because I tried to root this phone long time ago and I was unsuccessful. The device is not rooted because I checked if I had root access. The phone will only charge when I connect it to the computer and I need it to update to the stock 4.3 from Tmobile using odin. Any help??
Click to expand...
Click to collapse
Are you using cables bought with chargers? Or are you using quality "Data Cables"? Also, try different USB ports on the computer. Uninstall and reinstall drivers from Device Manager. If it will charge, but not transfer data, it sounds to me that its either a cable issue, or a driver issue. (Could be a bad port on the phone as well, but this is less likely)

DocHoliday77 said:
Are you using cables bought with chargers? Or are you using quality "Data Cables"? Also, try different USB ports on the computer. Uninstall and reinstall drivers from Device Manager. If it will charge, but not transfer data, it sounds to me that its either a cable issue, or a driver issue. (Could be a bad port on the phone as well, but this is less likely)
Click to expand...
Click to collapse
Yeah I tried all of that and I still had no luck

If you are stock, unrooted, can't you just use the software update in settings > about device?
When connected to the computer, what does it say in device manager?
Can you try on a different computer? If it also does not work on another computer, it may be more likely that there is a problem with the port on your phone.

rrravipatel said:
Yeah I tried all of that and I still had no luck
Click to expand...
Click to collapse
I would try downloading the drivers from the Samsung website. It doesn't really sound like it would be a problem with the phone. Also try switching between MTP and PTP and waiting a couple of minutes in between to see if the computer installs the phone correctly.

You can get drivers from my Sig if you want to try several different versions. Just make sure you uninstall through device manager.

Hi
I recommend you try re installing your cell phones drivers on your computer or flashing your ROM correctly. Try updating the device manually.

DocHoliday77 said:
If you are stock, unrooted, can't you just use the software update in settings > about device?
When connected to the computer, what does it say in device manager?
Can you try on a different computer? If it also does not work on another computer, it may be more likely that there is a problem with the port on your phone.
Click to expand...
Click to collapse
I tried to do all that with the drivers but the phone will not connect regardless.

Sounds like its either cables or usb ports then. See if you cant get a hold of an actual data cable, preferably a samsung replacement. Then try that on every usb port on the computer.
And for the drivers, are you uninstalling them through device manager before trying a different version? In my driver repo at least try the oldest and the 2nd and 3rd from the newest if you haven't already.
If none of the above works you may need to consider either reformatting and reinstalling Windows, or try to do this on a friend ir family members computer.

Unknown Device connection to pc

All I want to do is flash back to stock, I feel like I am gonna lose my my mind or go buy a new phone. I have mostly spent a solid 10 hours of time trying to get it to work.
I have been endlessly looking, searching, trying all these different methods to get my ls980 to connect to my pc. So basically everytime I have hooked it up it comes up as unreconized or unknown device doesn't connect.
List of things: Latest LG mobile drivers I have installed them through there exe and tried to install them manually when the ! comes up on the device. I have tried my laptop and my desktop every usb in all of them. I have tried the stock cable, and about 8 other different cables. I have tried it in debugging mode with mtp and without debugging. I tried the support tool as well. Tried composite usb setting.
I guess I am at a loss at this point to what even to try besides sending it to be repaired. Which I don't feel like it's a phone problem and I am just missing something I can't find, I say this because the phone charges perfectly fine and no damage to the usb port at all. If anyone has good information or just a direction I can go will be greatly appericated.

Dirty Grimace said:
All I want to do is flash back to stock, I feel like I am gonna lose my my mind or go buy a new phone. I have mostly spent a solid 10 hours of time trying to get it to work.
I have been endlessly looking, searching, trying all these different methods to get my ls980 to connect to my pc. So basically everytime I have hooked it up it comes up as unreconized or unknown device doesn't connect.
List of things: Latest LG mobile drivers I have installed them through there exe and tried to install them manually when the ! comes up on the device. I have tried my laptop and my desktop every usb in all of them. I have tried the stock cable, and about 8 other different cables. I have tried it in debugging mode with mtp and without debugging. I tried the support tool as well. Tried composite usb setting.
I guess I am at a loss at this point to what even to try besides sending it to be repaired. Which I don't feel like it's a phone problem and I am just missing something I can't find, I say this because the phone charges perfectly fine and no damage to the usb port at all. If anyone has good information or just a direction I can go will be greatly appericated.
Click to expand...
Click to collapse
Is your device functioning normally, besides from this? Also, did you use the T-mobile drivers?

tabp0le said:
Is your device functioning normally, besides from this? Also, did you use the T-mobile drivers?
Click to expand...
Click to collapse
It works just fine, only notable thing that I never figured out was why OTA updates don't ever take, it's still on ZVC. I tried the T-mobile d802 drivers as it was suggested by another post I saw on here.

And you've removed all drivers to android and lg for it.

secret.animal said:
And you've removed all drivers to android and lg for it.
Click to expand...
Click to collapse
Correct, I uninstalled them, tried new ones a couple different ways from other posts, and removed them and tried again. Right now I just have them all uninstalled. Trying to figure out if it's something that's stopping it. In error I did forget that a couple times it reconized it but would :fail to start code 10.

Which version of windows are you running? On both desktop and laptop???

secret.animal said:
Which version of windows are you running? On both desktop and laptop???
Click to expand...
Click to collapse
Windows 7 64-bit home premium on both.

Dirty Grimace said:
Windows 7 64-bit home premium on both.
Click to expand...
Click to collapse
OK, that shouldn't be the problem. Zvc yet updates do not take.
Is it rooted?
And it is running on sprint network?

secret.animal said:
OK, that shouldn't be the problem. Zvc yet updates do not take.
Is it rooted?
And it is running on sprint network?
Click to expand...
Click to collapse
Long story short, it's on ZVC, even with other updates that came up it would never update past it. I took it into sprint several times they didn't know why, I did root it as one guy said that was an option, I used stump root, but then I unrooted as I felt I was getting into something too complicated. It is on the sprint network, about 90% of the time and all the times I tried to update previous to the root/unroot. But I am not trying to update it since the root, mostly trying to restore to stock and start overish.

I'm thinking maybe a virtual machine with Linux might find it. If it can then there is something. And maybe we can redo the partitions and such.

secret.animal said:
I'm thinking maybe a virtual machine with Linux might find it. If it can then there is something. And maybe we can redo the partitions and such.
Click to expand...
Click to collapse
I will check with a couple guys see if I can find someone with a machine with Linux this weekend. Thanks a lot for you on going help.

I have this phone at least for another year. So at least someone out here is still willing to help.

secret.animal said:
I have this phone at least for another year. So at least someone out here is still willing to help.
Click to expand...
Click to collapse
I was unable to find anyone outside local computer store that I know. Kind of problem finding that in rural midwest. I also tried installing drivers in vista compatability as that was suggested no luck..

Dirty Grimace said:
I was unable to find anyone outside local computer store that I know. Kind of problem finding that in rural midwest. I also tried installing drivers in vista compatability as that was suggested no luck..
Click to expand...
Click to collapse
As for driver removal, one thing I remember with the nexus devices. There is wugfresh nrt, nexus root toolkit. Let me see which application or program they loaded for removal before reinstall of drivers. I know they have 2 places you check into.
Dang, I'll have to try to load them via a windows emulator. I'm running Linux right now.

secret.animal said:
As for driver removal, one thing I remember with the nexus devices. There is wugfresh nrt, nexus root toolkit. Let me see which application or program they loaded for removal before reinstall of drivers. I know they have 2 places you check into.
Dang, I'll have to try to load them via a windows emulator. I'm running Linux right now.
Click to expand...
Click to collapse
Let me know.. I am kinda at the point where I might try to find someone to flash it back to stock, and just activated my old phone til it gets back.. like I am past the point of frustration and no legit just don't get why, since all my other devices have zero issues connecting.

Samsung Galaxy S21 Ultra. Solution for Stuck in Odin flash.

Hi. First: This is my first post on this site. I probably post this at the wrong place. if this is the case, please let me know.
Anyway. Quick: Unplugged every usb device possible beside mouse before starting the odin flash process. Could work for Magisk / TWRP and other flash issues.
Long:
I tried to Root my S21 Ultra with Magisk for a while and always failed at odin. i always got stuck at some place during the flash process. different places though.
as i researched, i found a lot people with the same issue and a lot hints how to fix it like "try a different cable, try a different usb port, try a different odin version, check your firmware etc."
i tried all of the solutions but none worked.
after i bricked my device the second time and was not able to recover it with the kinda shady hack unbrick tool that actually worked perfectly the first time
( Thanks FRP Hijacker By Hagard. Awesome software : 3 Shady name and look though XD )
i pushed on with trying odin over and over again cause i could not break it a lot more at that point. just shortly unplugging and reconnecting my usb. sounds stupid, but kinda worked. got different results sometimes and came pretty far sometimes. kinda. even tried Heimdall and one for linux. qodin or something. i even tried to make it trough a virtual machine. but well. it seemed that everything worked, but was kinda unstable. as if the connection would randomly cut in and out sometimes. at the end, it probably was ether the usb stick for my wireless headphones, the usb for my wireless keyboard or the sim-usb that i used for my internet. And well. I unplugged everything beside my wired mouse and it worked. instantly and perfectly fine ^^ even found the custom youtube app with add block that i was looking for. So yea. Afther a couple months it finally worked XD hope that helps someone or something aha. Thanks ^^

My piece of shltsung s21 supershlt stuck too. First, I can't upload 6gb file via usb, i did it via cloud, then stuck with odin on super.img, all night with this crap. FRP helps turn on download mode, but nothing else. When it stops downloading, when I move the usb plug (this in band new **** and it has a slack), it starts to work.

mARximUS said:
My piece of shltsung s21 supershlt stuck too. First, I can't upload 6gb file via usb, i did it via cloud, then stuck with odin on super.img, all night with this crap. FRP helps turn on download mode, but nothing else. When it stops downloading, when I move the usb plug (this in band new **** and it has a slack), it starts to work.
Click to expand...
Click to collapse
sounds familiar. tried to unplug every unnecessary usb cable before flashing? tried with other cables, ports and another computer? different versions of odin? odin with and without admin rights? tried to flash with / over trwp?

Finally, after all night, on 6 in the morning, after many tries, I did it. Looks like a broken USB port, but it is brand new. Micro movements of the plug help in this. Small movements, but not pulling the plug. That's all I did when it stopped downloading.
PS Unlock this piece of shot cost me too much time. My next phone will be iphone. This is my last try to have a free Android phone. Android does not free anymore, so there's no difference between andriod and locked iphone. But the iPhone has the advantage, it is truly safe. And only one company spies on you. In Android, everyone spies on you, and everyone can do whatever they want with your phone. Except you, only you are incapacitated.

Which version Magisk do you have 23 or 24 ?
Is there any reson to install v24?
If you have v24, did you succeed hide magisk, to install banking app ?

i have 24.
my reason was youtube and because im a nerd XD
bank apps "can" work. watched this video: VIDEO
and installed "Universal SafetyNet Fix" and "Shamiko"
but it wont work on some samsung related apps like "samsung pay" n "samsung pass" cause they linked to knox or something. ^^

I want to flast the original firmware on my s21 ultra
but Im always stuck on LDFW, i did unplug everything
use another cable even use a laptop
still the same case..do you guys have any idea?