A lot of people are running into a "missing system.img" error when trying to flash the Android 5.0 factory image. After struggling with it for over an hour I found a solution. All you have to do is flash the .img files manually. When you extract the factory image you'll have a .zip file. Unzip that and you'll see all the .img files. Move the radio and bootloader .img files into the same place you just extracted the zip. Now it's just a matter of running commands. fastboot flash bootloader <bootloader file name here>.img fastboot flash radio <radio file name here>.img fastboot reboot-bootloader fastboot flash recovery recovery.img fastboot flash boot boot.img fastboot flash system system.img (this one will take the longest) To perform a full wipe do this: fastboot flash cache cache.img fastboot flash userdata userdata.img That's it. Reboot your phone fastboot reboot Has anyone else ran into this error?