'preparing to download' takes a very long time. after that some error(800700d) shows up.

[Brajendra Vikram Singh]

I'm downloading the update (presumably Denim update for lumia 630 single sim in India) on wifi network. I have enough space (2.4 Gb). The phone is running Windows 8.1, no preview for developers.
Downloading takes a lot of time around 1-2 hrs and then error shows up. I'm trying to download it again and again but in vain. Please help me:crying::crying::crying::crying:

 

[Harrie-S]

If you have a SD card get it out but i fear your wifi connection is too slow which causes the long prepairing time and download time resulting in the failure code.
Do you know your wifi speed and can you try to connect to another wifi?

 

[Brajendra Vikram Singh]

yeah, I think the wifi connection may be slow. I'll try downloading on another wifi. But I always use this connection for updating or downloading other apps, and there its speed is fair enough. Like large games are downloaded easily (200 mb in 5-6 mins). But thanks, I'll try it with another connection.