How to install flyme 6?

Yesterday i have read that flyme 6 has been realest and I try to check it out. Then the notification ota flyme 6 appear and I downloaded. After that I try to install but it failed it say Firmware corrupt and asking me to choose something like backup and another thing i forgot what i wrote something like root maybe. I have try many time to install it, does it an another way to install it. Sorry because my English bad. I hope you understand 😅

Looks like your connection to Meizufans was lost, please wait while we try to reconnect.