Things have become more and more unclear for me regarding the nature of the boot process of many smartphones. Sometimes people misinterpret what I'm asking. Sometimes people only have vague knowledge of a particular smartphone's hardware-based restrictions or if it has any to begin with. In light of this, I will try to phrase this post as clearly as I can.
I remember reading that the bootloader from the Nexus 4 was able to work on the LG Optimus G, allowing arbitrary kernels to be loaded. I cannot remember if it was in an article by someone reporting on the hack or in a post by the developer of the hack. It was never specified if it was the first-stage bootloader. Assuming that it was the first-stage bootloader, then this would lead me to believe that the boot ROM, the immutable mask ROM that is part of most processors used in smartphones, on the LG Optimus G will load arbitrary (i.e., unsigned or signed with different private key) code. In other words, it leads me to believe that I can modify the LG Optimus G's official bootloader and it would not be rejected (at least by the processor).
Is this the case with the LG G4? Is the first-stage bootloader verified by the phone's processor on startup? Does anyone know the configuration of the fuses on the processor that it uses (assuming it has any)?
I remember reading that the bootloader from the Nexus 4 was able to work on the LG Optimus G, allowing arbitrary kernels to be loaded. I cannot remember if it was in an article by someone reporting on the hack or in a post by the developer of the hack. It was never specified if it was the first-stage bootloader. Assuming that it was the first-stage bootloader, then this would lead me to believe that the boot ROM, the immutable mask ROM that is part of most processors used in smartphones, on the LG Optimus G will load arbitrary (i.e., unsigned or signed with different private key) code. In other words, it leads me to believe that I can modify the LG Optimus G's official bootloader and it would not be rejected (at least by the processor).
Is this the case with the LG G4? Is the first-stage bootloader verified by the phone's processor on startup? Does anyone know the configuration of the fuses on the processor that it uses (assuming it has any)?
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