Modders unpack the system.img and boot.img blobs using tools such as Android Image Kitchen. Common modifications include:
I can provide a safer, step-by-step guide based on your technical comfort level. firmware acer sospiro a60 patched
If rooting is the goal, utilize patching tools on the official ROM rather than searching for pre-patched firmware. To provide more specific help, could you tell me: Modders unpack the system