Nokia X Flasher is a software tool that is used to communicate with your Nokia X Android phones and desktop computer via USB cable. The Nokia X Flasher tool makes it easy to flash a new custom Recovery, flash a stock or custom ROM, boot to bootloader, wipe the device completely and return it to the stock ROM if needed.
Nokia X Flashing tool is similar to Odin for Samsung Galaxy devices. You can use it to flash system, boot, recovery and fastboot for Nokia X Android smartphone. This Windows application is easy to use, however in order to run this tool you need .NET Framework 4.0 installed on your PC. Below is a detailed instruction, which will help you use the Nokia X Flashing tool.
Warning: Before using this tool, do a backup of all your important data (contacts, call logs, SMS, Access Point Names (APN) settings and other data) from your Nokia X device.
Instruction to use Nokia X Flasher:
1. Download the Nokia X Flasher and run it on your computer (download from here).
2. Connect your device to the computer via USB cable (always use original USB cable) and then click on “Detect Device”.
3. Once your devices is detected, you can select the files such as system, boot, recovery, variant, data, cache and pre load and flash using it. Keep in mind that you can’t install all files at once. You need to flash one-by-one. That’s it!
For your information, with the Nokia X line-up, Nokia has surprised everyone by making an Android smartphone. This brightly colored handsets, blessed with the stylish design and excellent build quality for which Nokia is known, offers something completely different in the smartphone category. (source)