746

Error occurred during update process

Fronius · Solar Energy

What does 746 mean?

An error occurred during a software update process, causing the update to be interrupted and a warning message to be displayed.

Common Causes

  • Interruption during firmware update (e.g., power loss, communication error)
  • Corrupted update file

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for 2 minutes

  2. 2

    Start the update process again

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Verified technical data. Last updated: March 2026

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