So i was having issue getting hey cortana to work and read a post that going back to 8.1 and setting Hey Cortana and then upgrading to the latest RS build 14361 will resolve the issue. So i downgraded to win phone 8.1 on my L1520.downloaded the upgrade advisor and now i cant download the upgrade, it would go halfway and tell that there is server or internet connection error, my internet is perfectly fine i have 20+MB download speed. tried several restarts and been waiting for 2 days now and still not working, im just cant stand the look of 8.1 and if i use the insider to get win10 i wont get redstone, can someone tell how this can be resolved or anyone else having this issue with upgrade.
If you use Insider Preview you will get Redstone builds. Update Advisor give you Threshold.