For those who can’t solve the problem with packmule43’s solution:
1 Use this rom
2 copy /etc/apt/sources.list to your pc
3 copy apt-key to your pc
4 Use the official v0.5 rom
5 replace the /etc/apt/sources.list with the file in your pc
6 import apt-key
7 sudo apt update
and for chinese:
deb http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib
deb http://mirrors.cloud.tencent.com/debian-security buster/updates main
deb http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib
deb http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib
deb-src http://mirrors.cloud.tencent.com/debian-security buster/updates main
deb-src http://mirrors.cloud.tencent.com/debian/ buster main non-free contrib
deb-src http://mirrors.cloud.tencent.com/debian/ buster-updates main non-free contrib
deb-src http://mirrors.cloud.tencent.com/debian/ buster-backports main non-free contrib