4:35pm PST, April 21st
All affected 640 users, please see this thread ---> (click here)
4:30pm PST, April 15th
Many 640 users have noted that they have not been able update to the Windows 10 Technical Preview. This was due in part to new 640 device variants being launched and as such we did not have POP updates published for these devices (POP is a phone-operator-pairing, such as the Lumia 640 on Orange in South Africa). We are currently publishing update packages for all 640 devices (excluding the 640 XL which is not on the approved list due to the scaling bug).
One additional note: If your 640 is on software version 8.10.15127.138, you won't be able to update to Win10 yet. We're working on getting that fixed. It's not turned on yet so you don't end up in a bad state.
Please check for updates on these devices in the coming hours as these software packages publish to the update server. Thank you for your continued feedback!
2:15pm PST, April 11th
We have confirmed that all server publishing has completed and all users with supported devices are now able to connect and download the update software to Windows 10. If you have experienced this issue, please follow these steps:
- Ensure that your device is on the approved device list.
- Uninstall and re-install the Windows Insider application.
- Launch the application and select the Fast group.
- Reboot your device (it may do this automatically)
- Check for updates. Settings > phone update > (check for updates)
If you are on the previously Windows 10 Technical Preview build, you should receive the newest build. If you are still in Windows Phone 8, you will receive a staging update (this prepares your device to update to Widows 10), and then you will receive a second update that should be the Windows 10 software.
If you have completed those steps and are not being offered the update, please continue with the steps listed further below.
For some of our users we are seeing reports that they have a supported device but are not seeing the option to choose between the Fast or Slow ring within the Insider application.
If you are experiencing this issue, please post in this thread with the following:
Device Model (Example: Lumia 920)
Current OS version (Example: 8.10.15116.125)
Mobile Operator Name (Example: Orange UK)
Current Windows Insider App version (Example 220.127.116.11)
Any error messages seen or screen shots that would be helpful in troubleshooting