"Erro: Boot Certification verify" HELP

Good day Guys, I am new to the forum and I need your help, I have a LG Optimus L7 II in which I was doing a Hard Reset and now he no longer starts, is showing the message " Erro: Boot Certification verify,secure booting erro! Cause: boot Certification verify "and then displays a lilac screen to try conseter I tried to install the stock rom but when I put the download mode in cell appears this same screen with this same mistake and will not, even to carry him this appearing this screen. Could you help me, please? I have been desperate.

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by rowe.frieda
2 hours ago
Last post by grant.rico
4 hours ago
password reset
Started by nhoppe
Last post by schuster.remington
4 hours ago
Last post by xkihn
2 hours ago
Last post by jacobs.priscilla
2 hours ago
Last post by virgil74
51 minutes ago
Last post by elena.jakubowski
2 hours ago
Last post by thompson.edward
1 hour ago
Last post by jmetz
1 hour ago