Now basically all Lumia has pushed WP 8.1, however, some friends said that during the update process is often disconnected, resulting in the re-download. Do not know is not my character compared positive energy, I upgrade from the preview version, to the official version of the upgrade, there is no network phenomenon, every time can be updated smoothly.
In fact, if you confirm that your Lumia has been pushed cyan, then you can use the computer to upgrade, that is, download the latest firmware to brush the machine, note that before the brush machine please back up your data , if you are not at ease, you can put the SIM card also go.
1, to the following address download a call Nokia Software Recovery tool tools, do not fear, is the official, rest assured boldly go down.
Http://download.fds-ncom.nokia.com/supportFiles/phones/files/recovery/NokiaSoftwareRecoveryToolInstaller.exe
For more information, refer to Https://expertcentre.nokia.com/en/articles/kbarticles/Pages/Nokia-Software-Recovery-Tool.aspx
2, download finished, of course, is installed, do not tell me you will not install.
3, after installation, open the Nokia Software Recovery Tool, and then with a USB phone, without shutting down the computer, directly connected on the line.
4. The software will automatically identify your Lumia model and find the latest firmware. For the version number containing the WP8.1 latest firmware, you can see here http://www.nokia.com/global/support/software-update/wp8-software-update/ wp8-availability-in-asia-pacific/
5, then directly start to download the firmware and the brush can be, very simple, are a key to complete.
You just wait for it to finish. The advantage of upgrading in this way is that if you accidentally break the network, you can start again, and you can resume the breakpoint, but also faster than downloading on the phone.
In the initial interface to launch the software, the "settings" option at the top of the window allows you to choose where to download the firmware.
Well, with this method, you will not be so vexed, hasten to rise.
Nokia Lumia upgrades Windows Phone 8.1 via PC