Unfortunately, if you have the LG L45C from Net10 and try to use the update tool from LG's website, it provides you that the software cannot be updated. For some god awful reason, this is Net10's doing and I have chewed their rears becuase of it. I have had problems from not being able to update the phone when a new system comes out for it.
Even though your phone will prompt you to install new software, it will not let you as it tells you that the package is invalid.