三星oem7Oem7F7B Oem7 special models for the alternate version, average user please use Oem7F7 version for activation, a handful of models such as the Samsung R428, please use this alternate version for activation.-Oem7F7B Oem7 special models for the alternate version, average user please use Oem7F7 version for activation, a handful of models such as the Samsung R428, please use this alternate version for activation.