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[Q] TF101 Won't connect via USB

I'm quite confused with this one. Here's what's happened so far.
I was on AOKP Build 31 with CWM touch 5.8.2.1 and decided I want to go back to stock and start fresh. I found a mostly stock 9.2.1.17 from a thread in XDA titled "[ROM] TF101 Rooted Stock 9.2.1.17 + bootloader + modded recovery US and WW" (sorry, can't post links). I downloaded, checked the MD5, made a nandroid, wiped data/cache/Dalvik and installed the ROM. After doing that, I have been unable to get my device to connect to any computer via USB. I tried restoring my backup and also re-flashing a fresh copy of AOKP Build 31. I am able, however, to connect via ADB using TCP/IP. When I plug the device into my Windows 7 Pro, 64-bit I don't get any sort of notification or sound. When I plug the device into my Ubuntu 11.10, 64 bit I also don't have a connection showing up using the 'sudo lsusb' command. The strangest thing is that when I plug the device in the screen turns on, so clearly the USB cable is not the cause. I've tried two different Win. 7 computers, my Ubuntu box and a Fedora box (and multiple USB ports on each computer). Any suggestions?

Try this, Settings> Storage> hit the 3 dots sign at top right corner, hit USB computer connection,
Un check the MTP box and check it again. If that don't work try turning off USB debugging

Try this, Settings> Storage> hit the 3 dots sign at top right corner, hit USB computer connection,
Un check the MTP box and check it again. If that don't work try turning off USB debugging
Click to expand...
Click to collapse
Tried that on one of the Win. 7 boxes and the Ubuntu box, no success.

Have you tried reinstalling the drivers? I had to do that when I went from stock to custom rom.

This happens a lot. Something to do with the bootloader not getting flashed properly or something.
Get the full ICS ROM from Asus website and flash it.

horndroid said:
This happens a lot. Something to do with the bootloader not getting flashed properly or something.
Get the full ICS ROM from Asus website and flash it.
Click to expand...
Click to collapse
Just did that... lost root -.- stock and no usb >:/
Does anyone have any ide how i can root it now?

Get the full ICS ROM from Asus website and flash it.
Click to expand...
Click to collapse
I also tried doing this, without success. I'll try a few other things, thanks for the help though all!

You can root it (rather painfully and obscurely) by using an update.zip with the version of the firmware Razorclaw needs to work, and root in tablet and then flash in tablet. Downgrading to the required honeycomb might fix the usb too. I've never had to use ADB to do anything on my tf, aside from developing

Thing O Doom said:
You can root it (rather painfully and obscurely) by using an update.zip with the version of the firmware Razorclaw needs to work, and root in tablet and then flash in tablet. Downgrading to the required honeycomb might fix the usb too. I've never had to use ADB to do anything on my tf, aside from developing
Click to expand...
Click to collapse
How can i downgrade to honeycomb? without recovery?? and where can i find the ww version of it?

baseballfanz said:
Try this, Settings> Storage> hit the 3 dots sign at top right corner, hit USB computer connection,
Un check the MTP box and check it again. If that don't work try turning off USB debugging
Click to expand...
Click to collapse
Ive rooted a bajillion devioces and never thought to look there when my tf101 stopped connecting, ive rebooted my pc and it a hundred times
Thanks for the DOH! moment !!

no usb data. need to root -tf101

Long time listener. First time caller.
I have an issue. My tf101 lost the ability to transfer data about week ago. Meaning, its not detectable by computers or any usb device
The tablet was rooted but i returned to stock in an effort to fix the problem and lost root.
I have tried:
3 cables
4 PC's
1 linux box
The tablet charges fine and even trickle charges from usb ports
I narrowed down the problem to a partially corrupt bootloader. Or simply a bad flash(team rouges rec and revolution rom)
I think i may be able to fix the problem by flashing ClockWork recovery, but i need to get root access. Any ideas or am i just screwed?

So im screwed right?

Zone3 said:
Long time listener. First time caller.
I have an issue. My tf101 lost the ability to transfer data about week ago. Meaning, its not detectable by computers or any usb device
The tablet was rooted but i returned to stock in an effort to fix the problem and lost root.
I have tried:
3 cables
4 PC's
1 linux box
The tablet charges fine and even trickle charges from usb ports
I narrowed down the problem to a partially corrupt bootloader. Or simply a bad flash(team rouges rec and revolution rom)
I think i may be able to fix the problem by flashing ClockWork recovery, but i need to get root access. Any ideas or am i just screwed?
Click to expand...
Click to collapse
No, you're not "screwed" You could always just download an over-wifi file transfer app. I'm not sure what the best ones are on the Play Store, but I'd do you research if you're gonna drop a couple bucks on one. I haven't bothered since my Skyrocket is Samsung and I already get Kies Air.
I would suggest after flashing ClockWork recovery trying out some other ROMs and kernels and seeing if that fixes your problem. I would also highly suggest Team Win Recovery Project. It's been my favorite recovery so far, not to mention the touch screen interface is fantastic.

enterflux said:
No, you're not "screwed" You could always just download an over-wifi file transfer app. I'm not sure what the best ones are on the Play Store, but I'd do you research if you're gonna drop a couple bucks on one. I haven't bothered since my Skyrocket is Samsung and I already get Kies Air.
I would suggest after flashing ClockWork recovery trying out some other ROMs and kernels and seeing if that fixes your problem. I would also highly suggest Team Win Recovery Project. It's been my favorite recovery so far, not to mention the touch screen interface is fantastic.
Click to expand...
Click to collapse
Thanks for answering
Ive been using a combination of google drive and file expert for file transfer, but i cant flash any recovery or any rom or adbwireless because i dont have root anymore.

Did you try loading the official USB drivers?

Zone3 said:
Thanks for answering
Ive been using a combination of google drive and file expert for file transfer, but i cant flash any recovery or any rom or adbwireless because i dont have root anymore.
Click to expand...
Click to collapse
So you lost your recovery manager too?

enterflux said:
So you lost your recovery manager too?
Click to expand...
Click to collapse
Yep, and that appears to be my biggest hurdle in solving this issue.
Seems more than a few are having this issue as well

Zone3 said:
Yep, and that appears to be my biggest hurdle in solving this issue.
Seems more than a few are having this issue as well
Click to expand...
Click to collapse
I assume you can still get into APX mode? If so, I would try running this. It's what I initially used to root my TF101, and it doesn't require you to use your installed recovery. Basically it roots and installs CWM recovery from a script run from your computer. Let me know what happens.

enterflux said:
I assume you can still get into APX mode? If so, I would try running this. It's what I initially used to root my TF101, and it doesn't require you to use your installed recovery. Basically it roots and installs CWM recovery from a script run from your computer. Let me know what happens.
Click to expand...
Click to collapse
Yes, the tab can go into apx mode, but the computer wouldnt know if it was in apx. Pc doesn't know the tab exists when plugged in.

Zone3 said:
Yes, the tab can go into apx mode, but the computer wouldnt know if it was in apx. Pc doesn't know the tab exists when plugged in.
Click to expand...
Click to collapse
When plugged in to your computer and in APX mode, check Device Manager and see if there's any unrecognized devices.

enterflux said:
When plugged in to your computer and in APX mode, check Device Manager and see if there's any unrecognized devices.
Click to expand...
Click to collapse
Ive been through that. Its not a simple driver issue. Windows doesnt even acknowledge it as an "unrecognized usb device"
Linux does even list it with the lsusb command.
Same for mac.
There is no data being transfered. It doesnt even attempt usb handshaking...

Zone3 said:
Ive been through that. Its not a simple driver issue. Windows doesnt even acknowledge it as an "unrecognized usb device"
Linux does even list it with the lsusb command.
Same for mac.
There is no data being transfered. It doesnt even attempt usb handshaking...
Click to expand...
Click to collapse
Well, I'm assuming that this is no longer on stock firmware and/or too old to be still under warrantee. The only thing I can think of, unless someone else here can give you an answer, is that it may be a hardware problem and you'd have to send it in to ASUS to get it fixed.....

enterflux said:
Well, I'm assuming that this is no longer on stock firmware and/or too old to be still under warrantee. The only thing I can think of, unless someone else here can give you an answer, is that it may be a hardware problem and you'd have to send it in to ASUS to get it fixed.....
Click to expand...
Click to collapse
Did the OP found a solution to that? I have the exact same issue .

haha,, months after.....
But i am in the same situation...
a lost root and the USB dosnt work, exactly like the autor of this post...
any ideas?

sad_janus said:
haha,, months after.....
But i am in the same situation...
a lost root and the USB dosnt work, exactly like the autor of this post...
any ideas?
Click to expand...
Click to collapse
You need USB to root. I had the same issue and a new USB cable fixed it straight away.

frederuco said:
You need USB to root. I had the same issue and a new USB cable fixed it straight away.
Click to expand...
Click to collapse
hmmm, I'll try when I can get a new cable = (
but from what I've read some have tester with multiple cables and even so the USB dont work,,

sad_janus said:
hmmm, I'll try when I can get a new cable = (
but from what I've read some have tester with multiple cables and even so the USB dont work,,
Click to expand...
Click to collapse
If you have another PC you can try hat is the only other suggestion I have.

frederuco said:
If you have another PC you can try hat is the only other suggestion I have.
Click to expand...
Click to collapse
thanks
yeah, of curse i tried
but no luck. i try everything,
APX dosnt work, USB it is invisible for windows, in any way

USB port broken, unable to flash boot.bin

My phone died and requires me to flash boot.img in order to bring it back to Android. To my surprise, I couldn't get it to go, and after some testing it seems my USB port is having an issue where it won't connect data, but will charge. Both of my computers with seperate USB cords are stating that the USB device has malfunctioned. Does anyone know of a good solution? I know there are the pogo pins on the back, but I don't know if there is anything that connects to them or if they transfer data. Is my only option at this point looking for someone to do a USB port repair for me? Any ideas would be very welcomed. Thanks!

Not sure exactly what your problem is? Boot.bin? What exactly is that?

RollTribe said:
Not sure exactly what your problem is? Boot.bin? What exactly is that?
Click to expand...
Click to collapse
Probably boot.img
Sent from my HTC One XL using xda premium

serotoninzero said:
My phone died and requires me to flash boot.img in order to bring it back to Android.
Click to expand...
Click to collapse
Where is it now if not Android? There are only certain instances that the computer will recognize it. Try a different computer as well (fresh install of HTC drivers).

chris948 said:
Where is it now if not Android? There are only certain instances that the computer will recognize it. Try a different computer as well (fresh install of HTC drivers).
Click to expand...
Click to collapse
Sitting at the bootloader as well as TeamWin recovery usb mount. Both times comes up as USB device not recognized.

serotoninzero said:
Sitting at the bootloader as well as TeamWin recovery usb mount. Both times comes up as USB device not recognized.
Click to expand...
Click to collapse
You are trying to go into fastboot, right, and not just regular bootloader.

USB broken.. Can I root/flash recovery?

Hey all,
My USB broke i guess. I tried different cables and different computers, but nothing recognizes the device at all (not anything in device manager).
My TF700 is unlocked, so no warranty I want to flash a custom ROM, but my tablet isn't rooted and has stock ROM and recovery. Anything I can do or is my only option to get it fixed by asus?

jeroenpico said:
My USB broke i guess. I tried different cables and different computers, but nothing recognizes the device at all (not anything in device manager).
My TF700 is unlocked, so no warranty I want to flash a custom ROM, but my tablet isn't rooted and has stock ROM and recovery. Anything I can do or is my only option to get it fixed by asus?
Click to expand...
Click to collapse
Try cleaning the connector - at least it helped someone I know who even used an external battery charger for his phone for a few months because he thought USB was broken.

_that said:
Try cleaning the connector - at least it helped someone I know who even used an external battery charger for his phone for a few months because he thought USB was broken.
Click to expand...
Click to collapse
I tried this, but it doesn't seem to help. It's only the usb connection not working, I still can charge the tablet.
I've also tried my girls TF300 which works with all my cables and my computer, so I'm afraid it's the usb connector on my tablet.
But there is no way to get root acces or a custom recovery without usb?

jeroenpico said:
But there is no way to get root acces or a custom recovery without usb?
Click to expand...
Click to collapse
You could try to downgrade to 10.6.1.14.8 by putting the firmware zip on a microSD card (there are guides about details how to name the zip that I don't remember right now), then you could root it with Motochopper, and then you can install a custom recovery using dd to mmcblk0p4 and rebooting.
The problem: No safety net. If something goes wrong in the process, the normal way to fix it is fastboot via USB - if your USB doesn't work, then the tablet would be bricked.

Motochopper won't work if there is absolutely no USB connection since you have to run it from your PC
Sent from my DROID4 using Tapatalk

_that said:
You could try to downgrade to 10.6.1.14.8 by putting the firmware zip on a microSD card (there are guides about details how to name the zip that I don't remember right now), then you could root it with Motochopper, and then you can install a custom recovery using dd to mmcblk0p4 and rebooting.
The problem: No safety net. If something goes wrong in the process, the normal way to fix it is fastboot via USB - if your USB doesn't work, then the tablet would be bricked.
Click to expand...
Click to collapse
I need working USB in order to achieve root acces with motochopper right?

berndblb said:
Motochopper won't work if there is absolutely no USB connection since you have to run it from your PC
Click to expand...
Click to collapse
ouch, didn't think about that.

So I guess I got two options?
1. Pay Asus for fixing my tab
2. Trying to live with the laggy stock...
Thnx anyways!

This is probably a stupid suggestion but I'm good at making those, is there any way he could copy the required files to a micro SD then insert the card back into the tablet and then use a terminal emulator to update his recovery?
Sent from my GT-N7105 using XDA Premium 4 mobile app

fatboyinlycra said:
This is probably a stupid suggestion but I'm good at making those, is there any way he could copy the required files to a micro SD then insert the card back into the tablet and then use a terminal emulator to update his recovery?
Click to expand...
Click to collapse
I think for rooting you need at least a shell with the "shell" user account (which has more privileges than a normal app), but the terminal emulator runs under its own app user account.

A bit of an emergency...

Hey there, guys and gals,
I'm having a bit of an issue here, and it's somewhat serious.
The issue is as follows. I have Android 5.0.1 on my Nexus 5. When I connect my computer to my laptop... nothing.
Nothing at all. It doesn't show up in device manager, not even as unknown. Fastboot doesn't detect it, nor does ADB. I can't do anything, and it's scaring me. I don't know how I could have broken it, but I need to know how to fix it.
I'm happy to do whatever to get it working, so please help...
Update: Tried to factory reset, to see if it would fix the issue. It's stuck "Erasing...", and won't go further. I'm afraid my phone may be hard-bricked... Is it possible to reflash these using JTAG, and if so is there anyone that can assist with that process?

CypherX1389 said:
Hey there, guys and gals,
I'm having a bit of an issue here, and it's somewhat serious.
The issue is as follows. I have Android 5.0.1 on my Nexus 5. When I connect my computer to my laptop... nothing.
Nothing at all. It doesn't show up in device manager, not even as unknown. Fastboot doesn't detect it, nor does ADB. I can't do anything, and it's scaring me. I don't know how I could have broken it, but I need to know how to fix it.
I'm happy to do whatever to get it working, so please help...
Update: Tried to factory reset, to see if it would fix the issue. It's stuck "Erasing...", and won't go further. I'm afraid my phone may be hard-bricked... Is it possible to reflash these using JTAG, and if so is there anyone that can assist with that process?
Click to expand...
Click to collapse
Is it stock or what? are you rooted?

Also , keep in mind that the factory reset can take up to 30 minutes.
IMO it sounds like a busted cable/usb port on either side / incorrect drivers.
Edit : JTAG is not possible on our devices , access is locked from the chipset itself.

Are u on Windows 8.1 if so I had a problem with Windows thinking that my phone was a acer and I had to go the driver settings and manually tell it that it was a ADB USB connection then it would connect fine also could be USB cable I found the nexus 5 to be very picky about cables

Sometimes I get that but it solves by going into dev and checking and unchecking usb debugg, but sounds more like a busted usb plug

Have you considered that you may be using incorrect drivers on your PC? This issue can be caused by having improperly installed drivers.

dkconor said:
Have you considered that you may be using incorrect drivers on your PC? This issue can be caused by having improperly installed drivers.
Click to expand...
Click to collapse
Alxhn said:
Sometimes I get that but it solves by going into dev and checking and unchecking usb debugg, but sounds more like a busted usb plug
Click to expand...
Click to collapse
xstokerx said:
Are u on Windows 8.1 if so I had a problem with Windows thinking that my phone was a acer and I had to go the driver settings and manually tell it that it was a ADB USB connection then it would connect fine also could be USB cable I found the nexus 5 to be very picky about cables
Click to expand...
Click to collapse
Niflheimer said:
Also , keep in mind that the factory reset can take up to 30 minutes.
IMO it sounds like a busted cable/usb port on either side / incorrect drivers.
Edit : JTAG is not possible on our devices , access is locked from the chipset itself.
Click to expand...
Click to collapse
AndreIrawan97 said:
Is it stock or what? are you rooted?
Click to expand...
Click to collapse
Right. I'll address you all at once for ease.
Firstly, the USB connector functions fine. My USB-OTG cable still allows me to access files on a flash drive.
Secondly, drivers can't be an issue in this case. It won't even enumerate the device in device manager. As if the phone simply isn't plugged in.
Thirdly, Win8 isn't the issue, as I"ve had this phone connected to this computer many, /many/ times.
So it must be a problem within Android 5.0.1
But here's the problem. In order to install anything else, I'd have to install a recovery. In order to that, I need root. In order to root, I need USB. I'm lost, guys...

I just had an idea does towel root work on 5.0 if so u could try that?

xstokerx said:
I just had an idea does towel root work on 5.0 if so u could try that?
Click to expand...
Click to collapse
Hmm... That might work. I'll take a look. But if it succeeds, then something gets broken later in the process, this thing is a paperweight, right?
Edit: According to http://forums.androidcentral.com/an...29-rooting-nexus-5-towelroot.html#post4125236 Towelroot will never be possible on Lollipop. I didn't go much further than that though...

Ya I just read that to bummer
Edit: as of now there is no way to root without pc sounds like u may have some sort of hardware failure I'm guessing only way to fix is to send it in and that's 150 bucks min

xstokerx said:
Ya I just read that to bummer
Edit: as of now there is no way to root without pc sounds like u may have some sort of hardware failure I'm guessing only way to fix is to send it in and that's 150 bucks min
Click to expand...
Click to collapse
Well... This happened when I updated via OTA (after reinstalling the stock recovery) to 5.0.1 after 5.0. I did this all over USB. Immediately thereafter, it quit. I got it to boot, btw. The erasing problem fixed itself, and it's now running, but the USB is still stuffed. This is sounding more like software than hardware. Almost as if whatever chip talks via USB lost it's own firmware somehow.

Cable or driver 95% sure. Did you try connecting it to a windows 7 /linux pc ? And ... u can never be sure but try connecting to a usb2.0 port. I had those issues when I accidentally plugged my cable in my frontal panel ( usb3.0)

A few months ago I had the same problem, my phone got not recognized by adb or fastboot. I played around a whole day with drivers and stuff like that. At the end I found a post on the internet describing that not all USB cables are able to do adb connections and I should try the original USB cable that came with my Nexus 5. So I looked for that particular cable and hey presto it worked right away.

And 2$ usb cables do break over time. They might still charge , but one cold solder joint and no connection

CypherX1389 said:
Secondly, drivers can't be an issue in this case. It won't even enumerate the device in device manager. As if the phone simply isn't plugged in.
Click to expand...
Click to collapse
So you are correct. I didn't see that in your post, my bad.

Have you tried with another cable maybe?

Make sure you have either MTP or PTP checked in Settings/Storage/USB computer connection.

Niflheimer said:
Cable or driver 95% sure. Did you try connecting it to a windows 7 /linux pc ? And ... u can never be sure but try connecting to a usb2.0 port. I had those issues when I accidentally plugged my cable in my frontal panel ( usb3.0)
Click to expand...
Click to collapse
Georg2808 said:
A few months ago I had the same problem, my phone got not recognized by adb or fastboot. I played around a whole day with drivers and stuff like that. At the end I found a post on the internet describing that not all USB cables are able to do adb connections and I should try the original USB cable that came with my Nexus 5. So I looked for that particular cable and hey presto it worked right away.
Click to expand...
Click to collapse
Telyx said:
Make sure you have either MTP or PTP checked in Settings/Storage/USB computer connection.
Click to expand...
Click to collapse
Alxhn said:
Have you tried with another cable maybe?
Click to expand...
Click to collapse
Niflheimer said:
And 2$ usb cables do break over time. They might still charge , but one cold solder joint and no connection
Click to expand...
Click to collapse
I've tried multiple cables. I KNOW that this cable is fine for ADB, because it works fine for my other devices. All of them. I may be marked a newbie on the forums, but I'm really not one. When I first signed up for this account I was, but that was in what... '07?
I've tried:
Drivers (Obviously won't work.)
Cables
Rebooting
Factory Reset
Different Computers
Linux
Windows
Switching USB connection modes
Toggling Dev Mode/Debugging on/off
Nothing works. It HAS to be a software issue on the phone. I don't think anyone read it, but it's almost as if the IC that handles USB connections has lost it's firmware. I don't think that can happen, honestly, so it must be whatever's in the ROM that TALKS to that IC that's causing the issue. Problem is, I don't know how to fix the ROM without USB connection and Fastboot.

CypherX1389 said:
Nothing works. It HAS to be a software issue on the phone. I don't think anyone read it, but it's almost as if the IC that handles USB connections has lost it's firmware. I don't think that can happen, honestly, so it must be whatever's in the ROM that TALKS to that IC that's causing the issue. Problem is, I don't know how to fix the ROM without USB connection and Fastboot.
Click to expand...
Click to collapse
Its unlikely that the ROM will be the cause if the USB port suddenly stops working.
Do you have a custom recovery?
If not, then not much you can do except send it in for repair/replacement.