The device manufacturer can request to prolong the validity of a certificate. The request must be made within three months prior to, and three months after, the certificate‘s expiration date. For this purpose, the device manufacturer must send a completed certificate application form and a Manufacturer’s Declaration to the PICO. The declaration must contain the following statements: Declaring the unchanged conformance of the product with the tested prototype in hardware and software per the latest test report. Declaring there is no newer version of the device that uses the same device identification, i.e., Vendor ID, Device ID, or DAP-Module-ID. Otherwise, the prolongation of a certificate requires a retest.