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I should also consider the potential for the link the user found to be phishing. They need to be cautious about visiting any link that isn't directly from IBM or Lenovo's official support. Phishing attacks often exploit old hardware support queries. ibwrb304n firmware update link
Given the age and lack of support for this router, consider upgrading to a modern router. This will provide: If you have searched for ibwrb304n firmware update