I have this version of the firmware that was sent by Reolink when I requested the latest update.

https://drive.google.com/file/d/1en5tPatzejpKlK8C0NsMNpY8mhHQi3yg/view?usp=sharing

I usually go around my drive every now and then, cleaning up redundant stuff to save on space, so feel free to grab it and upload it somewhere else.