ROMs

sudo mount -t romfs romfs.img ./romfs

Firefox OS

Tools to install firefox OS:

sudo apt-get install android-tools-adb android-tools-fastboot

Firefox OS 1.4	link (210M)
1.3, 1.4, recovery, dual boot, 2.1, kitkat	link

A few useful commands:

adb reboot bootloader
fastboot boot cw_recovery_50.img
fastboot devices

A few useful links: