Downloading WP8.1 Preview fails on Lumia 720

[Nirmal Pushparajan]

while updating ma l720 to 8.1 the downloading session always fails like a charm
once i have downloaded 37% and suddenly it shows that can't download updates now & i again pressed check for updates after some time downloading has bben started again but now it's now starting from 17%
i patiently download the updates again and again still it won't go up to 40%
what am i supposed to do?
i have slow broadband connection is it the problem?
please do help guys

 

[Laura Knotek]

How slow is your Internet speed? Yes, slow Internet could be the cause of the failure.