Why is Lenovo's mobile phone card always wrong?
Hello, first of all, thank you for using Lenovo products. Depending on the situation you described, signature verification can be turned off or switched during recovery. If it is still unsuccessful, it should be a rom packaging problem, and a ROM can be replaced. In addition, it is not recommended that you brush your mobile phone, because there are risks, which may lead to abnormal operation of the mobile phone after implementation. Please operate with caution.