So I hadn't really messed with my tablet in quite some time, but I recently came across a ROM I wanted to try (Team EOS 4 - Nightlies TF101 ). My tablet was already rooted running TWRP 2.4. I tried connecting my tablet to my PC to copy the ROM over to my microSD, but it would not recognize as a MTP Device. It would show up under USB Controllers in Device Manager, but as Unknown. I tried to reload the drivers, but was unable to get them to load. I just figured something was going on with my PC. So I copied the ROM straight to my microSD card and put it back in my tablet and flashed. Something went wrong (probably user error), because the tablet would't boot afterwards. So I thought no big deal, I'll just use EasyFlasher and take it back to stock. Put my tablet in APX Mode, but same thing. Unrecognized USB Device. Tried loading Naked Drivers, but it didn't see my tablet as compatible device. So I connected it to my laptop, same thing. So then I downloaded the stock firmware, put it on my MicroSD card, put the card back in my tablet and flashed it back to stock through TWRP. It booted up just fine, but I ran out of time to mess with it because I had to be at work. I just took my tablet and cable with me to work and figured I'd do it there if I got a chance. Later in the day, I connected it to one of our PCs at work, and now it wont ever recognize anything at all is being plugged in. Tried on multiple PCs and even brought it back home, and same thing. Tried to scan for hardware changes, and still nothing. What are the chances there is something wrong with my cable? I have rolled the cable up and carried it around with me in my pocket multiple times. The fact I can't get it to be seen as a MTP and / or APX device is what makes me think it could possibly be my cable. Any suggestions?
Thanks in Advance.
emoti0n
Yeah first thing to try would be the cable. Sadly there's no other way to access APX than through USB. I'm guessing if you can push/pull using ADB or other tools, the tablet itself is just fine.
I bought this cable and it works fine for both data and charging, it just takes a long time to arrive.
Lethe6 said:
Yeah first thing to try would be the cable. Sadly there's no other way to access APX than through USB. I'm guessing if you can push/pull using ADB or other tools, the tablet itself is just fine.
I bought this cable and it works fine for both data and charging, it just takes a long time to arrive.
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Thanks for your reply Lethe6. I was able to get in-touch with a friend I hadn't talked to in awhile and use his cable (TF300) and it worked just fine as MTP and APX. I even flashed back using EasyFlasher. Also thanks for the link. It's worth the wait IMO. I was scared to order just any ol'cable and find out that it only works as a charging cable, and not data.
Sweet, glad it all worked out!
Related
Used Nvflash to root a while back ago. Worked flawlessly.
Started having problems where the TF was not connecting up to the PC (both laptop and desktop). No problems charging. I know there's something going on cause when I plug the TF into the USB port, the screen comes on. When I unplug it the screen comes on.
Thought it possibly was the the ROM (Prime 1.7). Wiped caches and re-installed. Nothing. Wiped data & caches and re-installed Prime 1.7 from scratch. Nothing. Wiped data & caches and installed Prime 1.6. Nothing.
Everything works fine other than I cannot get the TF connected (detected) on the PC and I cannot get into APX mode. I'm sure they're related. Did a search for not being able to get into APX mode and found a couple but no help.
I can get into recovery and see the tf in adb. Don't know what else I should be looking at.
[Update]
Just got the TF back from Asus. Missed it sooo much.
The ticket inside said they couldn't find any problems with it.
By the time the TF was off to Asus, I got my extra charger and cable. Tried the new usb cable and bam, device found. Most likely I was in APX mode but due to the cable, would have never known. The odd thing is the cable charges both the TF and the dock perfectly. All that for a f-n cable.
Now I'm fighting with Asus to replace my cable.
I hope this finds its way into others having the same issue.
Are you trying with a Linux machine or Windows?
Make sur you have all the required drivers installed for windows. APX requires additional ones....
On linux you will not see the device automatically when in APX but you can execute the nvflash script
Unfortunately I only have Windows machines.
When I press Volume Up + Power, I get nothing. It doesn't detect there's an APX device in my device manager for me to even install the drivers.
Also tired Volume Up + Volume Down + Power and nothing
Went back to total stock and I still can't get into APX mode and can't connect to the PC.
Talked to Asus support and they're stumped. Was told they had to research and get back to me.
Sent from my HTC Glacier using XDA Premium App
This just happened to me. I booted HC then went to applications. Disabled/re-enabled USB debugging, then I went to device manager on windows and clicked "Scan for Hardware changes". It worked after that.
Tried that method as well.
Sent it off to Asus on a RMA. Crossing my fingers
Sent from my HTC Glacier using XDA Premium App
So this just randomly happens to me the day before I am supposed to sell it to someone. I went to nvflash it back to stock and noticed this issue. You said you restored it back to stock before you sent the RMA in, how did you go about doing so? I'd like to get it fixed so I can sell a functional unit.
Thanks
I'm also facing the same problem with my pc/laptop not detecting the TF101. The service center is of no help and they just give me the usual answers - try other pc, check the cable etc.
Moreover, I cannot go into recovery mode even with all the necessary drivers installed. Only a green droid with an exclamation mark.
I've no problem rooting the tf on older firmware. Wondering if the bootloader is locked.
I think it sounds like the usb cable as the op said it fixed his issue. I'm looking around for one to test on.
Sent from my DROID BIONIC using xda premium
Im on prime 1.7 and just experienced difficulty connecting, but can still charge. I just started the troubleshooting and found this thread. Disappointed, yet happy that its probably only the cable.
Well do you get any response from your computer? Anything, like a sound? a error installing drivers? a unknown device? Are you using the docking keyboard? Also this may not be the case but make sure you dont have a USB hub or anything extra on it. You can also try connecting it to the computer and open device manager and click scan for hardware changes. See if something new comes up. I have a couple more extensive ways of testing but let me know if this helps.
frankc123 said:
Well do you get any response from your computer? Anything, like a sound? a error installing drivers? a unknown device? Are you using the docking keyboard? Also this may not be the case but make sure you dont have a USB hub or anything extra on it. You can also try connecting it to the computer and open device manager and click scan for hardware changes. See if something new comes up. I have a couple more extensive ways of testing but let me know if this helps.
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I recently tried to flash to different rom and got stuck in the Asus screen. And now I can't do anything with the tablet. It only shows as unknown devices on my pc. Any thought what happened and how to fixed it? I'm really appreciate your help
Whenever I take out the battery, hold up and down, and plug in the cable, I get unknown device, not APX device. When I go ahead and try to point that to my APX driver, out says that it's updated. I uninstall, reboot, and try again, and get the same results.
What is going on?. Got the phone from someone, I'm guessing, botched the flash, now, I don't even have an option too switch between charging and mass storage.
Going crazy...I just want the phone back to stock do I can do it right myself
Are you using the same port you installed the drivers on, if you are then try reinstalling. Usually you have to use the same usb port for the phone to be recognized or it will show it trying to identify the device and throw up errors like your getting.
If you want the phone back to stock you can always hit up the rom for recovery thread and when followed correctly will low level flash your g2x to gb 2.3.3 ota rom.
Sent from my LG-P999 using xda premium
I would, but I have no USB connection to PC at all. My phone will only charge. I don't even have to option for mass storage or charge in settings.
kichoufumetsu said:
I would, but I have no USB connection to PC at all. My phone will only charge. I don't even have to option for mass storage or charge in settings.
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go to settings/applications/development and make sure android debugging is checked, then plug into pc by usb. Also did you install lg drivers for your phone?
Sent from my LG-P999 using xda premium
I did install drivers from LG. And I've.tried.with debugging on and nothing works. I believe IM also stuck on the stock recovery as well.
Check under the HDMI output protective cover and make sure there's nothing in there shorting any of the pins.
Sounds crazy, but I had the exact same problem as you, and it turned out there was a bit of metallic debris (little piece of something) rattling around under the HDMI cover that was shorting the pins. Took it out, worked great after that.
Good idea...I never would've thought about it...but alas, that isn't the problem.
so you downloaded the apx drivers, all you need to do is go to device manager and manually update the apx device so you can do the rom for recovery method.
Sent from my LG-P999 using xda premium
got it....i finally got my hands on another charge/usb cable. for some reason, that was the problem. thanks for yall's ideas. though i do find it hilarious, that on two different forums, i had said that i had the drivers installed, and that the phone would ONLY charge when i plugged it into windows...everyone tells me to install the drivers.
as much as people on this site tell you to read the thread, very few people do. lol...
now i've got CWM recovery flashed, but when i try to choose to restore my stock zip, it tells me md5 mismatched
I am trying to connect via USB to my PC, not having much luck. I've tried several micro USB cables, and tried plugging them into every USB port on my PC.
When I plug in, and view "Devices and Printers" in Windows 7 32-bit, I can see a total of 6 LG devices show up:
LG Android Phone
LGE p999DW USB Device
LG Android (modem)
LG Android (NMEA)
LG Android (Serial)
Android Sooner Single ADB Interface
But literally every second some of them fall off the list and some reappear, sometimes they are all present for 1 second, sometimes none of them are present, and every combination in between.
I have no ideas left here. Uninstalled the LG driver from control panel, and reinstalled. Tried brushing out the USB port on the phone, as well as the old NES 8-bit blow method, no luck. Lots of cables tried all of which have worked in the past, no luck. Anyone have any thoughts?
Put the phone in apx mode by taking out the battery, holding vol +/-, plugging in the phone and waiting until the driver is ready.
Apx mode won't reconnect if dropped. .. I would guess a bad USB connector if the problem exists.
Also if the PC is overclocked turn that off. It messes with USB.
Sent from my LG-P999 using XDA
sound like a connection problem, either with the cable or your physical port on the computer
So it's connecting fine in APX mode, it stays connected in Devices & Printers. But I can't run the LG Mobile Support Tool from there, I've got to boot into Android. As soon as I boot into Android and connect USB, it's dropping the various device profiles in and out of Devices & Printers ever second.
Does it seems odd that I get a good solid connection in APX mode, but not when connecting with Android booted? Seems if the problem was with the USB connector on the phone, it would be an issue all the time.
Any other suggestions? I've tried going back to stock recovery and stock ROM, same issue. I'm really just trying to get the baseband update.
robbieas said:
So it's connecting fine in APX mode, it stays connected in Devices & Printers. But I can't run the LG Mobile Support Tool from there, I've got to boot into Android. As soon as I boot into Android and connect USB, it's dropping the various device profiles in and out of Devices & Printers ever second.
Does it seems odd that I get a good solid connection in APX mode, but not when connecting with Android booted? Seems if the problem was with the USB connector on the phone, it would be an issue all the time.
Any other suggestions? I've tried going back to stock recovery and stock ROM, same issue. I'm really just trying to get the baseband update.
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So you can safely say that the connector is good and cable its good. This suggests a software problem... either in Android or PC.
You can try the cleanup batch tool but I doubt it would solve the issue. Does not hurt to try though.
Sent from my LG-P999 using XDA
Are all of your Lg Drivers up to date?
No luck there either. Seems like a hardware problem, but it works fine in APX, only cutting in and out once Android boots.
I've been having the exact same issue.
Sent from my LG-P999 using XDA
Great, we've got strength in numbers!
So I've tried everything. I've flashed to stock recovery and OS, uninstalled the LG driver and reinstalled, multiple USB cables, different machines, USB debugging on/off, and every combination of things I can think of.
Sucks if if it's a hardware issue. Out of warranty period and I don't want to pay $130 or whatever the insurance deductible is for something so small... but I can't get 2.3.4 loaded without getting USB connected.
I'd be sure it's a USB connection problem, if I didn't get a smooth steady connection in APX mode. I've used NVFlash several times without issue.
Yeah I've only noticed it since i got the 2.3.4 update.
I've tried all my usb ports, and it will pop-up.
Last night i finally got it to let me decide to turn usb mass storage on but when I opened my computer nothing was showing up.
Just got a replacement g2x today after a long battle with my old one's usb port. When i was troubleshooting, I found that vmware and blackberry drivers can cause conflicts.
Try plugging in the phone and removing the drivers for all the LG devices you see in device manager.
btw... brand new replacement phone, if i move it the slightest bit while connected windows will play the disconnect/reconnect sound. I think LH just screwed up in the port design...
There's a funky greenish sticker around the usb port on this new one. Not sure what thats all about... cant tell if this is a refurb either.
Finally got mine to stop. I did a system restore on my laptop and it was good
@captmorganz the green sticker was on both my originals, and to check for the refurbished or not there is a code on the back under the battery by the screws that shows p999dw for original and something close but another letter at the end for refurbished, can't think right now since I've been at work for about 15 hours doing nothing and drinking coffee for the past 5 haha, excuse the rant.
Sent from my LG-P999 using xda premium
I'm currently on Beans 13 rom and noticed that I cannot connect my phone to my computer via usb, all it will do it charge, I will not get a notification to use usb mass storage or anything like that. I uninstalled the drivers, rebooted my computer and phone, installed the drivers again and still does not give me the usb notification.
I then remembered that I did a nandroid on Beans 12 so I loaded that up and tried connecting to my computer and had the same exact issue. I took my phone to my roommate's laptop who also has a verizon S3 and tried connecting to his laptop. Still just charges, no notification.
I connected his S3 using the same exact cord to my computer and my computer recognizes his phone (although he is 100% stock).
I decided to try and Odin back to 100% stock. I loaded up Odin on my computer (Win 7 Pro 64 bit) and rebooted my computer into the odin/download mode and my computer/odin didn't recognize my phone. At this point I am at a lost. I have a suspicion that maybe the usb port on my phone went bad but in order to replace it with Verizon, I need to odin back to stock. Any one have any ideas?
I apologize if this has been covered before, I used the search and didn't see anything relating this.
NITRO_2 said:
I'm currently on Beans 13 rom and noticed that I cannot connect my phone to my computer via usb, all it will do it charge, I will not get a notification to use usb mass storage or anything like that. I uninstalled the drivers, rebooted my computer and phone, installed the drivers again and still does not give me the usb notification.
I then remembered that I did a nandroid on Beans 12 so I loaded that up and tried connecting to my computer and had the same exact issue. I took my phone to my roommate's laptop who also has a verizon S3 and tried connecting to his laptop. Still just charges, no notification.
I connected his S3 using the same exact cord to my computer and my computer recognizes his phone (although he is 100% stock).
I decided to try and Odin back to 100% stock. I loaded up Odin on my computer (Win 7 Pro 64 bit) and rebooted my computer into the odin/download mode and my computer/odin didn't recognize my phone. At this point I am at a lost. I have a suspicion that maybe the usb port on my phone went bad but in order to replace it with Verizon, I need to odin back to stock. Any one have any ideas?
I apologize if this has been covered before, I used the search and didn't see anything relating this.
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Click to collapse
I'm having the exact same problem with my GS3. The problem started after I flashed Beans B13 as well. I directly downloaded MDOB (it's a stock rooted ROM) and flashed it, but I am still having the issue. I haven't been able to figure it out either. Hopefully someone on here can help us out!
Well I think I solved the problem - at least for me. I tried the USB cable from my Dad's Droid X. Plugged the phone into the computer and everything works. No errors and the drivers installed correctly. I tried the cable that came with my phone (the one I have always used and has worked up until now) and it doesn't work. I get the error with it, but as soon as I use the one from the DX again, it works! Not sure why that is but I would say give it a try for sure! Let me know if it works for you too!
By the way, I got the idea from this thread:
http://forum.xda-developers.com/showthread.php?t=1719539
Take a look if trying the new cable doesn't work!
DROIDLOVERX2 said:
Well I think I solved the problem - at least for me. I tried the USB cable from my Dad's Droid X. Plugged the phone into the computer and everything works. No errors and the drivers installed correctly. I tried the cable that came with my phone (the one I have always used and has worked up until now) and it doesn't work. I get the error with it, but as soon as I use the one from the DX again, it works! Not sure why that is but I would say give it a try for sure! Let me know if it works for you too!
By the way, I got the idea from this thread:
http://http://forum.xda-developers.com/showthread.php?t=1719539
Take a look if trying the new cable doesn't work!
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Thanks for replying back! I meant to add a post. I got my phone working again. My roommate and I took apart the tip of my usb cable (the one that came with the phone) and noticed the green wire was broken off, so we soldered it back on and my phone was able to connect to my computer finally. Although it wasn't a strong connection and kept disconnecting.
For now I'm using a different cable from my hp touchpad and it's working perfectly fine so everything is all good now
Sent from my SCH-I535 using Tapatalk 2
NITRO_2 said:
Thanks for replying back! I meant to add a post. I got my phone working again. My roommate and I took apart the tip of my usb cable (the one that came with the phone) and noticed the green wire was broken off, so we soldered it back on and my phone was able to connect to my computer finally. Although it wasn't a strong connection and kept disconnecting.
For now I'm using a different cable from my hp touchpad and it's working perfectly fine so everything is all good now
Sent from my SCH-I535 using Tapatalk 2
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Click to collapse
That's good to hear! I guess both of our cables just went bad from use or something. Wish I would have tried another cable sooner instead of spending 4 hours installing and uninstalling drivers and wiping and installing ROMs over and over trying to solve the issue! :silly: But good thing we both figured it out! :victory:
I'm having the same problem as well...have now tried 4 different cables, hard reset, and every USB port on my machine and my buddy's computer to no avail. I verified the cables were 'good' on my buddy's gf's gs3 and it worked fine...just wont see mine. Charges just fine just no go on getting any data pass through it seems???
Hi
I recently bought a Desire S from a friend. I went about rooting it but when I plugged it into my PC it is not recognised at all, literally nothing pops up on the phone or the PC.
I've checked the settings in the phone and USB debugging is enabled and I always changed default connection type.
I have even booted into Hboot and plugged the USB in, but still nothing.
The phone charges perfectly fine and I've tried plenty of different cables. My other Android phone works perfectly when plugged it.
I'm starting to think its a hardware issue, anyone else heard of this? common problem? any fixes?
Thanks
Re install htc sync and drivers, then remove sync and try again
“Pressure is something you feel when you don't know what the hell you're doing.”*―*Peyton Manning
I have the same problem, sort of. When I plug mine in all is well at first, but give the phone one tiny nudge (or just wait a few minutes) and it goes back to charge-only mode. It's probably a slightly loose connection somewhere in the USB port on your phone.
To be sure, try if it works in Linux. The Linux USB stack sucks infinitely less than what Windows uses.
Thanks for the replies. I tried Ubuntu but exactly the same (it worked with my Nexus 4)
Thats a little annoying, thankfully charging still works, just unsure how long that will last for! plus I cant root it! but I dont exactly need it rooted but I tend to do it anyway.
I've sorted it now. It was a loose ribbon cable, plugged that back in after taking the phone apart and its working.
Bootloader unlocked and custom recovery flashed. Ready to rock.