I'm pretty sure Tegra2 got firmware updates during its lifetime, and I know that TI do updates for OMAP.
Those updates might not make it through to consumer devices, but that used to be the case for things like GPU drivers too. Google pushed an updated SGX driver for the Galaxy Nexus with 4.1, and Apple pushes updates to their own drivers every release.
Those updates might not make it through to consumer devices, but that used to be the case for things like GPU drivers too. Google pushed an updated SGX driver for the Galaxy Nexus with 4.1, and Apple pushes updates to their own drivers every release.