Because the version of the garbage system vivo is too low, mine can't be installed either. The vivo system has not updated the special code for several years, and some software can't be installed. It's no use looking for their customer service. Just to let you know, the update time of each machine version system is fast or slow! Mom sells batches and feels that they have given up the old machine now. Regardless of us, we will never buy the brand vivo again. It's just a pit. Now I don't know how to load a fast film, alas.