Similar problem with a Samsung NT5110, in an unstable state. That is it starts up, partially, and displays the reboot..factory reset.. clear cache menu.
Samsung will do a "depot" rebuild for $160 US. Thus, my attempt to reinstall from a Linux/Ubuntu 14.04 system. I do not have a keyboard for the Samsung device. The Samsung is found by lsusb, but mtp-detact fails. mtp-detect Unable to read MTPZ public exponent from ~/.mtpz-data, MTPZ disabledlibmtp version: 1.1.6 Listing raw device(s) Device 0 (VID=04e8 and PID=6860) is a Samsung Galaxy models (MTP). Found 1 device(s): Samsung: Galaxy models (MTP) (04e8:6860) @ bus 1, dev 8 Attempting to connect device(s) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1314556 Title: Unable to mount Android MTP device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gvfs/+bug/1314556/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs