hi,
i used windows insider upgrade windows phone 8.1 10. using lumia 640
application installed tells me there no builds couple of reasons , looks not registered windows insider participant:
you have registered window insider program
your phone meets system requirement
then need alternate logon. login message prompted.
model: lumia 640 lte
windows phone 8.1 update 2
os version: 8.10.15148160
hi tungmanh,
to address concern, need more information:
- when click you have registered windows insider program, happens?
- what troubleshooting steps have done far?
- did try re-join insider program microsoft account?
regards.
Windows Insider Program / Windows Insider Preview / Windows Update / Phone
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