Permisi gan ane mau update manual dari 11.10.7.17 ke 11.10.7.18 kok muncul tulisan E: failed to verify whole-file signature E: signature verification failed Signature verification failed Instalation aborted Itu kenapa ya gan? Ane pake padfone s hitam, padahal waktu update 11.10.7.17 lancar2 aja, t