With regards to the Lumia 625's looks it, well, looks like a Lumia - albeit a chunkier one than we're used to. The dimensions of 133.2 x 72.2 x 9.2mm make it the longer and wider than you might
Currently,Windows 10 Technical Preview currently works with the following phonesโas long as they have at least 8 GB of storage, Windows Phone 8.1 was already installed on the phone at the time of purchase, and the version number is 8.10.14219.341 or earlier: Lumia 430. Lumia 435. Lumia 520. Lumia 525.
The Upgrade Process Step 1: Install Windows Phone Internals. To start the upgrade process, youโll need to download and install Windows Phone Internals on your PC. Once installed, launch the application. Step 2: Unlock Bootloader. The next step is to unlock your Lumia 625โs bootloader. For that: Start by connecting your device with the PC The Windows 10 Mobile Upgrade Advisor app is not designed or intended for Enterprise customers who want to automate the upgrade process. However, the Windows 10 Mobile Upgrade Advisor app is the best mechanism to determine when an upgrade is available. The app dynamically queries whether the upgrade is released for this device model and Once your phone boots back after the flash, under โ Unlock โ header select โ Unlock Bootloader โ. Confirm by clicking OK in the prompt to switch the phone into flash mode. Now under โ Resource for Flashing โ section, click on โ Select your FFU imageโ and browse the FFU and click ok. Now click on โ Select the folder with Lumia