Hello everyone. I got in some kind of situation that I don't have any idea what to do. I rooted my phone with autorec, installed TWRP. I used to flash some roms and yesterday found this one "[ROM][FR][5.0.1][STOCK] ★★★ FR v2.1 Beta Build ★★★ From new FR-Team ★★★". I flashed beta version, but because of some bugs I wanted to try stable version. After AROMA finished its installation i got an error in TWRP. After couple of tries, I decided to make a backup restore of KK original software. I ended up with lg logo and some error in upper left corner: "secure booting error cause boot certification verify". This happened yesterday, today it just can't turn on.. please help.