After breaking CyanogenMod on my Nexus 5 I want to flash it with a factory image but all I get is:
fastboot flash bootloader bootloader-flounder-3.43.0.0114.img sending 'bootloader' (2970 KB)... OKAY [ 0.270s] writing 'bootloader'... FAILED (remote: invalid bootloader image ) finished. total time: 0.450s
The same happens when I do
fastboot flash boot boot.img with
FAILED (remote: image is not a boot image) etc.
What could be the problem?