Unhappy nexus 7 (2012) WIFI FileWriteFailed

First of all i apologise if this has already been asked and solved, i have searched and each time i have drawn up a blank. I have been given the mission of reloading android back on a asus nexus 7 (2012) wifi tablet. So far i have been unsuccessful in reloading it. I have attached the details given to me by "fastboot gervar all" if it helps. all i know is it is not version 3.41 and when i attempt to flash any bootloader img i get errors. the tablet will load into fastboot mode no problem, i also get the white google image with an unlocked padlock. the unit charges showing the white charge symbol. I guess the main question is can i reload the tablet into working order, or with the errors and info provided do i give up and accept defeat?
Attached Images
File Type: jpg GETVAR-INFO.jpg - [Click for QR Code] (166.9 KB, 16 views)
File Type: jpg filewritefailed.jpg - [Click for QR Code] (164.2 KB, 16 views)