Not sure this is the right place to post, I'm a newbie, but here it goes anyway. I have a nexus 7 that I rooted with the Nexus toolkit and I made the fatal mistake of updating android to 4.2.2 and last night I noticed that I couldnt tx files through my USB drive anymore. So I went on the forum to do a bit of resaerch and installed root checker pro and it says that root access is not properly configured. Here is the report Root Access is not properly configured or was not granted. Super User Applications Status: Superuser application - is NOT installed! SuperSU application - version 1.04 - is installed! System File Properties for Root Access: Standard Location Check Command: ls -l /system/bin/su: Result: /system/bin/su: No such file or directory Analysis: File /system/bin/su does not exist. Standard Location Check Command: ls -l /system/xbin/su: Result: -rwxr-xr-x root shell 96144 2013-02-05 14:58 su Analysis: Setuid attribute NOT present BUT root user ownership is present. Root access is NOT correctly configured for this file! Alternative Location Check Command: ls -l /sbin/su: Result: /sbin/su: Permission denied Analysis: File system permissions restricted and denied access. Alternative Location Check Command: ls -l /system/xbin/sudo: Result: /system/xbin/sudo: No such file or directory Analysis: File /system/xbin/sudo does not exist. Root User ID and Group ID Status: SU binary not found or not operating properly System Environment PATH: /sbin /vendor/bin /system/sbin /system/bin /system/xbin ADB Shell Default User: ADB shell setting for standard access, stored in default.prop, is configured as: shell (non root) user - ro.secure=1 I can see stickmount in SuperSU and when I try to moiunt manually it says busy. When I connect the drive it flashes and stickmount searches for the drive but comes back with an error message that card is not mounted or empty. I went back to the toolkit and it won't let me root becase I get stuck in "ADB is listed but offline". I tried all the steps recommended changed port, cable, verify that port 50.. is listening, rebooted device and computer, ticked and unticked usb debugging etc but no success. I'm stuck and don't know what to do next. I'm new to android, have had the tablet only for 3 months. I thought I was on top of it, but not. I shouldn't have updated, I did it with trepidation, I have to travel soon and I need the tablet to be able to read the external storage. Can anyone help please or redirect me to the right place?