The author and publisher of this article are not responsible for any damage or issues that may arise from using the SC7715 IMEI Tool. Users are advised to use the tool at their own risk and follow the manufacturer's instructions carefully.
While finding a "good paper" (likely meaning a reliable guide or working link) for this specific legacy chipset can be difficult due to outdated links, here are the current reliable options: SC7715 IMEI Tool (Legacy)
Locate your original IMEI (usually on a sticker under the battery or on the original box).