Sony has issued simultaneous firmware updates for three of its Alpha full-frame mirrorless bodies: the A7R IVA, A7C, and A7 III. The new versions — 1.13, 2.03, and 4.04 respectively — all carry the same terse changelog: improved operational stability. Sony has offered no further detail, which is typical for this category of update. In practice, stability patches of this kind generally address issues around power management, accessory or lens compatibility, and intermittent freezing or unresponsiveness.