Abstract: A method for upgrading firmware of a mobile terminal includes dividing a first firmware into a plurality of first firmware sections, storing a copy of at least one of the first firmware sections in the mobile terminal, loading a second firmware divided into a plurality of second firmware sections, determining whether at least one of the second firmware sections has incurred an error, loading the stored copy of the first firmware section corresponding to the second firmware section if the second firmware section is determined to have incurred an error, and executing the first firmware section or the second firmware section for executing at least one of a kernel and an operating system of the mobile terminal. The method further includes replacing at least one of the second firmware sections having an error with a corresponding replacement second firmware section if an error is determined to have occurred.