No, it is not unofficial bcoz X150Q has officially announced for win 10 upgrade. But X150E had problem bcoz of BLU Firmware. Blu releases Different firmware's for their WINDOWS devices, so thats why microsoft having trouble to deploy win 10 Update on OTA on X150E users. but now microsoft deploy the 15013 image in wdrt, i think they were added the X150E firmware win 10 compatibility. And thats why X150E users have only option to flash this image and download install (Upgrade Advisor IT IS THE ONLY WAY TO DOWNLOAD WIN 10 UPDATE MANUALLY FOR CURRENT SITUATION FOR X150E ONLY) Enable it and download the win 10 update THROUGH THE UPGRDE ADVISOR and enjoy. If anyone had problem with this so wait for OTA, But now i'm enjoying win 10 on my X150E. no lagging, no network issues, no lte or 4g issues, no bugs and fixes neat and clean OS.

Last edited by Aniket2787; 04-08-2016 at 12:01 PM .