The appliance may restrict operation during an update. Interrupting a normal process can create a different problem from the original feature issue.
What the observation means
Keep the complete message and progress indication. Do not start cooking or repeatedly power-cycle just because the interface is temporarily unavailable.
A useful next step
Follow the stated procedure and contact support if it stalls beyond the manufacturer's guidance. Immediate hazards still take priority: smoke, electrical smells or fire require the appropriate response. Do not enter an undocumented service or recovery mode from another model.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.