This document shows how to upgrade from Devuan Jessie to Devuan Ascii. It assumes a working Devuan Jessie system is already installed and should not be used for migrations.
First edit the sources.list file so that the branch can be changed to Ascii.
root@devuan:~# editor /etc/apt/sources.list
Add the latest Devuan mirror and the Ascii branch as shown. Comment out any other lines.
deb http://pkgmaster.devuan.org/merged ascii main
deb http://pkgmaster.devuan.org/merged ascii-updates main
deb http://pkgmaster.devuan.org/merged ascii-security main
deb http://pkgmaster.devuan.org/merged ascii-backports main
Upgrade the Devuan keyring package to make sure you have the latest version.
root@devuan:~# apt-get upgrade devuan-keyring
Update the package index files.
root@devuan:~# apt-get update
The only thing left to do is upgrade the system.
root@devuan:~# apt-get dist-upgrade