It usually is for 90+% of the people - unknown circumstances might interfere tho'
BTW, the link to the binaries always comes with the announcment post in Particle Firmware Updates Thread
It's good to subscribe to this thread if you want to stay informed.
The actual binaries can be found here (as already also liked to by @Moors7)
Release v0.7.0 Release (Core/Photon/P1/Electron) · particle-iot/device-os · GitHub
After download you need to find the downloaded file on your computer and flash it from there (or any more convenient place you choose to move it to) - we have no means to know where your box puts downloads and where you want downloaded files to reside after that.
No way to tell for us 