I have added an auto updatable pass to wallet. As soon as it is added I am able to receive the registration request. When there is change available for the pass I am able to trigger push notification to registered device via APNS. I am also able to receive the consecutive call about serial numbers. In the final call made from device to /v1/passes endpoint , server is sending the pass with these headers - Content-Type, Content-Disposition, Last-Modified however the pass is not getting updated. There are no logs received on /v1/log endpoint. From a MacBook when I hit the same endpoint, I am able to download and open the pass. Anything else that is needed on the headers so it can work on device? Is it necessary to have change description in the updated pass so that pass can update on device?