Follow the manufacturer's displayed instructions and avoid interrupting a normal update. The expected duration and permitted actions are model specific.
What the observation means
An update can temporarily change control availability. This is different from a blank display with an unknown cause. Do not begin cooking or power-cycle repeatedly just to make the interface respond faster. Keep the exact wording and any progress indication available.
A useful next step
If it appears stuck beyond the manufacturer's guidance, contact support with the model and update message. An electrical smell, smoke or other immediate hazard still takes priority over preserving an update. Do not enter an undocumented recovery menu from another appliance model.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.