Keep on seeking out and printing out the photos, Nanban, and keep them safe. If the rift remains long term, one day, when he is older, he will see that you always had him in your heart, and any lies that have been told about why you are not in his life, will fade away into irrelevance.
I too am facing a family rift with my eldest son. It into the fourth week now, and I have no idea how to mend it. I did nothing wrong, but somehow I was misread, misunderstood, or something. The only thing I can do for the moment is get my other son to keep an eye on him and make sure he is OK. It is much easier for me - there are no grandchildren yet.