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  1. Temiloluwa

    Panasonic KX-NT551/553 latest firmwares needed

    Thank you Jack C. Please can you send a screenshot of how you were able to do a firmware upgrade of the IP phones KX-NT5xx and KX-NT3xx. Thank you for your help
  2. Temiloluwa

    Panasonic KX-NT551/553 latest firmwares needed

    Good afternoon. Please how can i do a firmware upgrade for my Panasonic KX-NT5xx series and KX-NT3xx series telephones. Your help will be appreciated

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