I see it has been some time since you posted.  Today I had the same issue so to help others I am replying.  A corrupt oil reset file wouldn't allow me to update my SD card.  I ran the CHKDSK utility.  Need to have admin rights on the computer.  Open the Command Prompt Admin, I did this from Cortana but you can press the Windows button and tap x also.  At the prompt (C:\Windows…) type in chkdsk d: /r where 'd' is the value of the SD card drive.  There is one space between chkdsk and 'd' and one betwee 'd' and /.  Windows will run a diagnostic and repair if possible.  It repaired my SD card and I was able to get the latest software.  If you would like a visual also, this is a good link, https://www.wikihow.com/Repair-a-Corrupted-Memory-Card#Repairing_a_Memory_Card_on_Windows_sub