nope, 30K/s is the max speed for a 250kbps connection. If you were downloading it from a different faster source, then you might be able to utilize your 1.5mbit download speed
He can only upload at 30kb/s, so even if he send it somewhere else it wont be faster than that.
You might be able to download each individual file faster, but it will still be limited as a whole by his 30kb/s.