Running BLAST+(version 2.2.31) locally for GRCH37 refseq

Question

[niharraul]

I am trying to use BLAST updateblastdb.pl refseq_genomic script to download human genomic datasets so that I can run the BLAST software locally. However, I realized these datasets would be for GRCh38 (the latest versions) and not GRCh37.

1. My question is to how to get the files for GRCh37?
2. What command should I be using to run it locally. Since I will be aligning a chunk of different DNA sequences(query sequences could be up to 5000 in number) of various length from 20 bp to say 120 bp? Since if using protein database blastp is used, blast for nucleotide database and etc.