Updating Firmware on BIg IP LTM Machines From Command Line

Only 90mbps! There's a few solutions open to you here;

1) Upload the file once to a single box and then scp/sftp it from there to the other boxes; assuming they have connectivity to each other

2) Use a CLI command such as wget to pull the file directly from downloads.f5.com to each box; if each device has internet access and assuming the authorisation doesn't get in the way

3) Post a USB stick to someone local

Either way, I'd recommend you use a scp/sftp client to upload the file, not the GUI; there's less overhead. Something like pscp.