Database Users

Unable to Connect N7 via USB to PC

First some background:
Playing around with some ROMs, I loaded up MIUI. I wanted to see what all the fuss was about. While installing from ROM Manager, the subsequent boot into CWM started my backup and installed the ROM. During the process CWM notified me the install was attempting to overwrite the recovery partition. I inadvertently said yes, one of the bad things about touch recovery...fat fingers.
Result:
CWM was blown away. MIUI failed to install Google Apps.
I connect the N7 up to my PC. It is not detected. No ADB available, however I can use wireless ADB so I installed ROM manager and reflashed CWM. This was were the fun began. Everything on my internal storage got nuked during the install and attempted recovery. I had to format internal storage.
No biggie, I have backups on my laptop through WUGFresh Root Kit. I will restore back to stock and start over.
Problem:
No computer I connect the N7 to detects it, regardless of USB connection method nor OS on the PC (Ubuntu, Win 7, Mint). I still have wireless ADB but that doesn't help with fastboot.
Current Status:
Currently I am running AOKP, after flashing multiple ROMs and Recovery between TWRP (current) and CWM. Also I have done many factory resets, cache cleaning, etc.
My diagnosis:
I think my boot, recovery or bootloader partition is borked due to the fat finger in CWM while installing MIUI. The added bonus...without being able to connect the N7 to any PC, I can't get into recovery unless I get lucky (1 out of 10 tries I get lucky and can get into recovery). I can get into recovery as long as I can boot into a ROM and do any common method to reboot recovery.
Question:
Now my question, does anyone have any ideas what I can do to get the USB connection working again to allow ADB/Fastboot connections?
Additional info/Review:
I have a GNex that I can ADB/Fastboot into without issue.
I have tried multiple different cables to connect to PC/Laptops.
As mentioned, I have tried multiple PCs to attempt a connection running everything from Windows 7 to variations of Linux (Mint and Ubuntu)
All the cables work fine with GNex, excluding one cable I deemed trashworthy.
I am fairly certain that the micro-USB port is fine, I can charge without issue even connected to a PC. OTG cable works perfectly fine.
I did something saying a port was open from the N7 that cause USB connection to fail. I forget what I did to find that message or what program I was using. I think I was trying to do a adb usb command from the command line on the N7.
USB Debugging is enabled.

More info:
No errors in logcat when connecting N7 to PC.

Try to do complete wipe & flash stock . My desktop has never detected the n7 but the fastboot works. I was able to flash stock using wugs toolkit.
Sent from my GT-I9300 using Tapatalk 2

That is the problem, I can't get any PC to recognize the n7 is connected. therefore, wugs root tool kit wont work. it uses fastboot and adb. without the drivers loaded and the device detected, I can't use wugs. this happens even on machines I have never plugged the n7 into.
If I could find a flashable zip of stock, that might do the trick.
I am wondering if I can use the otg cable and connect from my phone with adb? I don't think I can run fastboot commands from the phone though.
Sent from my Nexus 7 using Tapatalk 2

Doubt you could. Have you tried booting into bootloader then changing the usb port on the and also try reinstalling the drivers. When in bootloader try locating your device in device manager.
Good luck
Sent from my GT-I9300 using Tapatalk 2

panjaby said:
Doubt you could. Have you tried booting into bootloader then changing the usb port on the and also try reinstalling the drivers. When in bootloader try locating your device in device manager.
Good luck
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
even in boot manager, the device does not show in device manager on windows and it can't be seen on Linux either when looking for attached devices.
With my old viewsonic gtab I use to verify there was a device connected from command line, that doesn't work either. I'll post that command later today, just for reference.
Sent from my Nexus 7 using Tapatalk 2

OK, I have verified the problem is on the tablet side. I can connect my OTG cable to the tablet and mount my GNex allowing me to perform adb commands sent to the phone. I can not mount my tablet to the phone reversing the cable.
N7 ---> OTG ---> USB ---> GNex (works)
GNex ---> OTG ---> USB ---> N7 (fails, phone does not recognize the tablet being connected. I verified I could connect to a USB stick without issue.)
I think this narrows it down to MTP/PTP being disabled somewhere. Since it affects fastboot as well, I am assuming something in boot or bootloader. I ruled out recovery due to recovery working correctly when I can get to it.
Any ideas?

Bricked nexus 7 please read!

Hi,
I. Have gotten myself into quit a frustrating situation. My nexus 7 was unlocked, rooted and had several different custom roms installed at various times and had never had a problem. But then one time in particular, when trying to flash a rom (which I can't even remember which one it was,) after the rom had "successfully" been flashed, it rebooted to the splash screen, which it stayed at for a very long time; before just turning into a series of flashing vertical lines that never end. I can use the power+vol- method to get to fastboot, but not recovery; it would appear that my recovery has been wiped as I get the same google splash screen loop as when I try to boot. My problem is that nothing I do allows me to successfully connect the device to my pc (w7, 32bit.)
I have uninstalled any conflicting drivers, un/re-installed the proper drivers from like 7 different guides, I have also tried two different nexus root toolkits. I even tried to use a Linux machine to no avail. I have switched USB cables, everything I have tried has not worked. This is by no means my first foray into android devices, I even freshly installed my android SDK and still my computer just fails to recognize the nexus 7 in fastboot mode.
Any tips or advice would be a godsend. Thanks.

This sounds like a issue a few people have been having.. As far as i know as of a week ago there is no solution . You need to flash the boot-loader it sounds like. There is a thread about this. Search for NV FLASH .. OR APX MODE. Sorry for being lazy and not looking for the thread for you..
They may have some things in that thread that you have not tried.

Turn your Nexus off and plug it into your computer. Does your Nexus start charging? A completely bricked Nexus wouldn't charge. If it starts charging, then try turning it on into Fastboot mode.
Sorry, I'm no dev. Just a random thought to try. But if your Nexus can charge you shouldn't be fully bricked, hopefully. At least this is what I think.

When you say your computer fails to recognise the device...
If you open your device manager in Windows and then plug in the nexus 7 in fastboot mode, what happens? Does it show up in the device manager in any category? Even with a yellow exclamation mark or as unknown device?
Sent from my Nexus 7 using Tapatalk 2

My bro bricked his N7
He was rooted and unlocked, flashed a rom now it bootloops on the logo. Now when doing adb devices, it doesnt detect the device when in bootloader, went to device manager and shows problem with driver. Tried other drivers but says its up to date. Thing is I just upgared his friends N7 with the same drivers so I know thats not a problem.
It wont go into recovery either. Now when it is bootlooping, the decive is recognised when doing adb devices. So can I flash a factory image when it is bootlooping or does it have to be in fastboot?

TRY THIS
from powered down,
hold VOL- and POWER for ten seconds,. then let go of POWER and still hold down VOL-

dramdrum said:
When you say your computer fails to recognise the device...
If you open your device manager in Windows and then plug in the nexus 7 in fastboot mode, what happens? Does it show up in the device manager in any category? Even with a yellow exclamation mark or as unknown device?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
it doesn't even acknowledge that I plugged anything in to the computer at all.

chismay said:
TRY THIS
from powered down,
hold VOL- and POWER for ten seconds,. then let go of POWER and still hold down VOL-
Click to expand...
Click to collapse
Just goes to bootloader?
Edit seems to be working now even though when doing adb devices in fastboot it doesnt list the device id

In fatboot mode you don't have adb access - down load a recovery image and name recovery.img
Hold shift and right click in the folder recovery.img is in
Choose open command here, in cmd type
fastboot devices
If you see your serial number proceed
fastboot flash recovery recovery.img
When finished reboot to recovery and flash rom of choice
ps, you have had to either change your path in enviromental variables to include platform-tools from the sdk or have both fastboot.exe and recovery.img in the same folder that cmd is pointed to
Sent from my HTC Vision using xda premium

Help, fastboot can't recognize device

Hi there,
I've tried root my Nexus 10 today, I've unlocked the bootloader first, then use the fastboot root the device.
However, when I reboot the device, it was stuck on the symbol "X".
I thought it might something wrong, so I try to flush the 4.2.2 ROM from Google.
When I using the fastboot flush the system.img, it got an error, so I terminate it.
After I reboot the device, my computer can't recognize the device anymore.
Currently my Nexus 10 can still get the fastboot mode, the only problem is that fastboot and adb both can't see my device on my computer.
I tried on Mac and Windows 8, same result..
Help! Any suggestions?
Thanks.
Update:
I change another cable which I use on my kindle, then every thing goes well...
Thanks

Rsd lite does not detect my device

ok so im on kitkat with root and unlocked BL. i have to get back to JB because i want to install a custom rom which runs on JB bootloader.
The problem: The problem is that RSD LITE does not detect my device. i successfully installed all the drivers turned on USB DEBUGGING and everything is working great even my device shows up in ADB when i type adb devices the serial number of my razr m comes so adb is perfectly working. but RSD LITE does not detect my phone as i have to flash JB in order to install the custom rom. i installed drivers rebooted my pc did everything still no success. anyone who is willing to help me will be really appreciated. also i have checked several times. however i noticed someting in the windows device manger theres an unknown device detected under other devices. but my phone is transfering data perfectly and adb seems to be working.
NOTE: my cable is 100% fine as i rooted many phones with this and ran commands such as flash recovery etc so my cable is 100% perfect please dont tell me to change the cable
Thanks , Peace.

Is your device in fastboot mode? I only ask because you mentioned USB debugging... Check out this thread for details on how to use rsd it even has pictures...
We cannot teach people anything; we can only help them discover it within themselves.

ezknives said:
Is your device in fastboot mode? I only ask because you mentioned USB debugging... Check out this thread for details on how to use rsd it even has pictures...
We cannot teach people anything; we can only help them discover it within themselves.
Click to expand...
Click to collapse
OKAY SO FINALLY my device is coming up in rsd lite. there is a trick to do it. ADB INTERFACE driver is must as i saw that ADB INTERFACE installed in my pc when i plugged the phone in. and then i rebooted to to fastboot and yes RSD LITE shows a device connected in AP FASTBOOT .
THE NEXT THING IM IN STUCK IS: RSD LITE says that XML file is either broken etc. i have replaced the xml file did everything and still RSD LITE says its broken. Please help.
OKAY SO I SOLVED THE ISSUE BY DOWNLOADING A FRESH COPY OF THE XML/SBF because mine was corrupted. it was missing a little file, thats why RSD LITE was saying its broken.

USB not detected bad port?

I know what your thinking another newb not installing drivers properly or hasn't changed to file transfer mode.... This is not the case. I been installing adb and USB drivers since the og droid.
I have a real problem here....
I been on custom ROMs and wanted to fastboot back to stock however none of my computers are detecting my phone... Tried on 2 windows 10 x64 and one windows 7 x64 with same result. None even pop up a notification or ding a sound that the phone has been plugged into it. Nothing in device manager either. The phone charges at least I have also tried 4 different cables granted 3 came in a bundle pack that I do not trust but reviews state although not full speed they should do data....
Now here is the kicker:
If I turn off my phone and boot to the bootloader my 3 computers detect a device has been connected but the drivers fail and say something about the device signature can't be recognized. I have tried disabling the device signature validation in windows 10 with no luck and also windows 7....
Tried manually installing the drivers but says not compatible with device hardware
At this point I'm baffled luckily I'm rooted twrp and can download files to install directly but I rely heavily on fastboot as my goto if something goes wrong I'll be hosed!
I did factory reset and even flashed another custom rom to see if it was the ROM I was using.
Please help if you have any ideas to try. I have yet another cord coming Friday just in case the offchanse the main went bad and the other three from the bundle pack are ****

Sending back to google I hope they don't mind the custom rom, unlocked bootloader and twrp recovery lol