You need the —a legacy desktop app Microsoft built for store kiosks. Even then, the tool often returns error code 0x80072ee7 because the update servers are now vaporware.
Windows 10 was not.
While flagship Lumias (like the 1520 or 930) with 1GB or 2GB of RAM received a relatively smooth—though still buggy—upgrade, the 630 was treated as a second-class citizen. Microsoft eventually pushed a build of Windows 10 Mobile to 512MB devices, but it was a stripped-down, agonizing experience. nokia lumia 630 windows 10 update download
Keep the phone offline. Use it as a glorious offline music player (the DAC in that thing is surprisingly warm) or a dedicated HERE Maps device. The "Windows 10 update download" for the Lumia 630 is a historical artifact—something you attempt once, swear at for an evening, and then lovingly flash back to 8.1 before putting the phone back in a drawer where it belongs. You need the —a legacy desktop app Microsoft
Some updates aren't upgrades. The Lumia 630 taught us that the hard way. While flagship Lumias (like the 1520 or 930)