Updating Lumia 640

jisto1215

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Aug 14, 2015
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Got a Lumia 640. Want to update it to windows 10. It's running on wp 8.1 ver 8.10.15148.160. Can I directly update to w10m build 10586.494
 
Any idea about how much size it has?

in addition to the 1.7Gb total OS update size, there will be dozens of apps which will need to be updated and that can take a lot more data too depending on the apps, so expect a total of 3GB to be used up easily
 

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