irecovery -f logo.img4
irecovery -c "setpicture 0x1"
irecovery -f ramdisk.img4
irecovery -c ramdisk
irecovery -f devicetree.img4
irecovery -c devicetree
irecovery -f trustcache.img4
irecovery -c firmware
irecovery -f kernelcache.img4
irecovery -c bootx
A firmware image that contains a minimal operating system for certain tasks, named as such because it is stored temporarily in memory rather than permanently on disk