[Nexus 7 Q&A, Help & Troubleshooting] funkyo0o:
Working APX driver for Nexus 7 and nvflash?

I am sorry i am posting this with out a solution i am experiencing a similar problem,my theory I have tried all kinds of "drivers" from different people and even the oem's sites and nothing, I think that the key to a succesful driver to nvflash.exe communication would be getting not only a successfully installed APX driver but the specific information of the APX Interface of the specific device.An example of what I mean is suppose you download the Universal _Naked_Driver_0.73.zip.Next you open unzip it.Then you would change the "\VID_" and "\PID_" to the specific "Hardware ID" that you see in device manager assuming you have a nexus7 and have already pressed the power+up volume button for 7-15 seconds.Well in device manager you can right click the unknown device "APX" then select properties and select "Details" tab then click the arrow to the right of the drop down list and select "Hardware Ids" then now there should be a string of numbers that i assume are unique on every machine that proceed after the "\VID_" and "\PID_" entries.You can open the "android_apxusb.inf" file and change the ID's in the .inf file so that the add hardware wizard can install your driver. You can go through the "add hardware wizard" in windows once windows detects your device by using the power+up button for about ten seconds the go into device manager and righ click "APX" then select update driver and it is gonna be asking you for permission to check windows update, I sperosnally select n"no not this time", then click next, then select "install from a list or a specific location" then next ,then I personally select "don't search.I will choose driver to install" then next, then I select show all devices (that option takes a little longer while windows scans for them but who cares), then click the "Have Disk" button on the middle right, then hit the browse button to navigate in explorer to the folder where your "android_apxusb.inf" file is.If a list of already detected drivers appear you may need to look in the "C:\Windows\Inf" folder and look for any other usbgoogle driver you may have tried to install for the nexus7 under "oemXX.inf".Please open each one of those oemXX.inf files and check that they are not .inf files of important software drivers you have installed and need or you will be hosed.Then delete them and the corresponding .pnf file so that windows can update the driver list in the update wizard and start fresh.Now I personally have had success installing many "APX" drivers this way but none of them allow me to use the nvflash tool with a different response other then "Unknown Device Found" error message, but that might be another different story or might not be, given that nvflash is what you would be using in that "APX" mode in windows in the attempt to "un-brick" it.I have pointed add hardware wizard to the Universal _Naked_Driver_0.73 .inf file and get the "ASUS Transformer Prime TF201 APX Interface" installed but it does not work with my Nexus 7.I even tried chnged the "ASUS Transformer Prime TF201 APX Interface" name in the .inf file to "Google Nexus 7 APX Interface" and modified it under the "[Strings]" section at the bottom of the "android_apxusb.inf" file but nothing.I modified the "android_winusb.inf" file in the "[Google.NTx86]" section (because my machine is 32 bit) and supplied my devices "Hardware Ids" and nothing... nvflash.exe would return "unknown device found", I wonder if there is some "%GoogleNexus7APXInterface%" that would really get nvflash to change "unknown device found" to somthing which would imply the Nexus 7 device was recognized.I did not see any errors when this the "ASUS Transformer Prime TF201 APX Interface" was installed and ddevice manager properties reported it as "Working Properly" so you guys get the point.I am really curious as to any work around for this issue.I have been up day and night for weeks googling a solution because I want to use the --sbk parameter for restoring my device with nvflash.exe but no luck.I am limited to the nvflash.exe pogram only because i did not have any "blob" files backed up.I have tried every button combo for strange amounts of time and all but nothing.Nor fast boot not adb.I was forced to serach for help here http://xdaforums.com/showthread.php?p=50448998 because i gave up. Please reply and i adamittly and sincerly thank you in advance.