Performing population stratification based on GWA tutorial

Hi, I’m performing QC steps of Andries T. Marees GWA tutorial, currently I’m stuck at 7th step where you should begin the population stratification downloading a 61GB vcf.gz file of 1000genomes containing genetic data of 629 individuals from different ethnic backgrounds. Successively variants should be extracted with PLINK to obtain bim-fam-bed files.

wget ftp://ftp-trace.ncbi.nih.gov/1000genomes/ftp/release/20100804/ALL.2of4intersection.20100804.genotypes.vcf.gz

During the extraction process I learn the file is corrupted; I tried to unzip it as well but with no success. I tried to download it 4 times but it is always corrupted. Has someone found the same issue?

Tutorial: github.com/MareesAT/GWA_tutorial

Article: www.ncbi.nlm.nih.gov/pmc/articles/PMC6001694/