I received this email reply from support:

The file size is more than 2 GB so it can't be download through Internet Download Management, so please use FTP to download.

But i don't know why 2GB is not downloadable to my computer?

2GB shouldn't be a problem to be downloaded via HTTP unless that is some sort of restrictions with your web host, which can be possible if they're restricting many things in return for providing more budget end hosting.

I'd try asking them and doing research to figure out whats wrong.

Cheers

Myabe They limit the Internet Download Management

Most likely it's the file size limit for Apache - that always used to be 2GB for the older versions. Any reason why you can't use ftp to download it, as they suggest?

Apache (so Http) has some file limits, 2GB or 4GB sometimes. I'm not surprised you can't download it via Internet Download Manager (it's not "management" :))

IDM can also download via FTP, so you better do it that way. Limit the connections to 4 per file before starting download.

Actually FTP is the better way for downloading files in any case, and when you have the chance. FTP is the "File Transfer Protocol", leave file downloads to it. Http is "Hyper Text Transfer Protocol" and you better transfer hypertext (html code) via it, not big files.

2GB shouldn't be a problem to be downloaded via HTTP unless that is some sort of restrictions with your web host, which can be possible if they're restricting many things in return for providing more budget end hosting.

I'd try asking them and doing research to figure out whats wrong.

Cheers
I'm using your hosting, and i want to download the file now.

Please help, thanks!

2GB is the limit for programs using signed 32-bit integers to keep track of the size. 4GB is the limit for unsigned 32-bit integers. The problem is probably with the software you are using.