In theory it should, but most common people probably would never try anyways. Also on lot those devices if you open them up there are probably some JTAG pins so

In theory it should, but most common people probably would never try anyways. Also on lot those devices if you open them up there are probably some JTAG pins somewhere that can let you do a lot and even change things if you wanted. Not a lot a devices are locked down to the extent of iDevice. The chips Apple makes has fuses they blow inside the chip that prevent it booting/running unsigned code. You can't load your own keys or anything unless you have apples private key or get them somehow to sign some software for you. A lot micros do have fuses that are similar to prevent firmware from being dumped to protect IP, but when you talk to such devices via like JTAG you can often still tell it load code from external memory and such and not from ROM. This of course depends on the chip, but in my experience most the time it's not as insanely locked down as apple does. --EDIT-- Like if you look here on this wiki article on JTAG: https://en.wikipedia.org/wiki/JTAG#Connectors https://en.wikipedia.org/wiki/JTAG#Connectors You can see two pictures of some netgear products that have JTAG pins that you can connect to that then let you take control of the device with. This how you have to some times load alternative firmware on some Routers and such. If people didn't do this projects like OpenWrt would not exist. Although, for a lot routers you don't have to connect to jtag pins directly.