I am having trouble transferring files to flash drive or sd card using usb. If it is less that 1GB it will transfer but larger files will start to transfer but when it gets to like 15% the speed meter will go to zero and usually pop up with an error that something went wrong and then I cant access the flash drive or sd card unless I disconnect it. I tried to make a bootable usb drive with windows 10 and it fails. When I tried to update my gps the same thing it wil get about half way through and sit there.