I'm trying to download a lot of SRA files which are whole genome of animals. average sizes are tens of gigabytes so it takes almost a day to download one individual even if I use SRAtoolkit prefetch and than fasterq-dump. I know there are other ways like wget from FTP but FTP addresses change often and even if I use something like SRA explorer, it, doesn't receive multiple SRR so I have to do it manually. Also wget from FTP is too slow also. I'm assuming that ascp of Aspera is the fastest way, but I've been struggling to set it. I tried the aspera connect version 4.2.5 but it doesn't give me keys after installing, so I tried with lower versions.

ascp -QT -l 300m -P33001 -i $HOME/.aspera/connect/etc/asperaweb_id_dsa.openssh era-fasp@fasp.sra.ebi.ac.uk:vol1/fastq/ERR315/009/ERR3155119/ERR3155119.fastq.gz ./

This is the command I tried cause people said it worked about 5 months ago. but it gave me Session Stop (Error: Server aborted session: No such file or directory) error as if the address is wrong.

I checked in the SRA explorer for the ascp address but even if I use the code given by SRA explorer, it doesn't work. Is there someone who uses ascp for SRA downloading? could you please help me