>700ms is pretty bad latency in the worst case. What is your internet like, is it 4G wireless? Do you have different internet you could try? Also try the feature code a couple times, you might be having packet loss that's causing your issue.
Hmm, that's a really rare one. It means the download is getting corrupted. What is your internet connection like? Do you have some kind of nannyware like firewall or antivirus? I would try disabling that and trying the update again. I would guess that this is either something to do with...
Can you post a network test from the options pages in VCDS-Mobile, so I can see what your connection is like? When you say you can't use Mobile, do you mean it doesn't have asam data, or are you having other issues?
Now announcing that the new, improved VCDS-Mobile Assistant android app is available, and can be found here:
Better support for latest phones
More reliable auto-detect scanning...