Can I change the name of file features.tsv to genes.tsv it is said that the features.tsv from Cell Ranger v3 is analogous to the genes.tsv from Cell Ranger v2. So can I change the file name to genes.tsv for Seurat to read it? I know that Seurat has the update version 3 that can read the features.tsv, and I would like to use the old version. So if I change the file name, did it cause any problem?
You can follow the 10X instructions to load your matrix into R:
the following is a direct quote from their webpage: 


library(Matrix)
matrix_dir = "/opt/sample345/outs/filtered_feature_bc_matrix/"
barcode.path &lt;- paste0(matrix_dir, "barcodes.tsv.gz")
features.path &lt;- paste0(matrix_dir, "features.tsv.gz")
matrix.path &lt;- paste0(matrix_dir, "matrix.mtx.gz")
mat &lt;- readMM(file = matrix.path)
feature.names = read.delim(features.path, 
                           header = FALSE,
                           stringsAsFactors = FALSE)
barcode.names = read.delim(barcode.path, 
                           header = FALSE,
                           stringsAsFactors = FALSE)
colnames(mat) = barcode.names$V1
rownames(mat) = feature.names$V1



You can then create a seurat object using mat

object &lt;- CreateSeuratObject(mat, project="")