The device must have a compatible baseband version that allows write access to the IMEI partition. Operating System:

: Open the tool and select the correct communication port (usually "USB" or a specific COM number).

installed on a Windows PC to recognize the device in "Download" or "Calibration" mode. Port Selection:

Writing to the NVRAM is risky. If the tool writes a corrupt file, or if the process is interrupted (e.g., cable disconnect, PC crash), the device may suffer a "Hard Brick" and fail to power on entirely.