After several attempts and failures, I finally got the latest firefox version,  non-Devuan repositories end up breaking down the system, and many of those repositories don't work.

       Steps to get the latest firefox version from a tarball package:

1.   Download the package and unpack it.

2.   You decide if you uninstall the old version, in my case I uninstalled it and it went very well.

3.   Copy the run  file of firefox to the /usr/bin/ directory ( the delete old executing file in my case)

4.   Create a folder in the /usr/share/ directory and deposit the entire folder of the unzipped firefox file, example:

# cd /usr/share/
# mkdir devuan-firefox/

# cd /home/user/Download/
# cp firefox /usr/share/devuan-firefox/

5.    Create a file with a name you choose for .desktop and add these comments to the file  created, example:

# cd /usr/share/devuan-firefox/firefox/
# nano devuan-firefox.desktop

[Desktop Entry]
Name=Firefox web
Comment=Browse the World Wide Web
GenericName=Web Browser
X-GNOME-FullName=Firefox Web browser
Exec=/usr/share/devuan-firefox/firefox/firefox %u
Terminal=false
X-MultipleArgs=false
Type=Application
Icon=/usr/share/devuan-firefox/firefox/browser/icons/mozicon128.png
Categories=Network;WebBrowser;
MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vnd.mozilla.xul+xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;
StartupWMClass=Firefox
StartupNotify=true

6.    Locate in the directory of the created folder that deposited the uncompressed firefox folder, and pass this command with the .desktop file  that created it,   by example:

$  cd /usr/share/devuan-firefox/firefox/
$  sudo desktop-file-install devuan-firefox.desktop

8.    Copy the firefox icon file from the directory icons where it is located, to the /usr/share/applications/ directory and name with the name of tha application, example:

$ cd /usr/share/devuan-firefox/firefox/browser/icons/
$ sudo cp mozicon128.png /usr/share/applications/devuan-firefox.png

9.     Create the symbolic link to the path where the file run from the application,   example:

$ cd /usr/local/bin/
$ sudo ls -s /usr/share/devuan-firefox/firefox/firefox

              That's it, with that you will see the firefox icon in your applications of start.

Edited:
This installation method is correct, I have just received an update from Firefox  and I have given permission to automatically update the latest version. Enjoy.

The system detect  on the terminal to Huawei,  but it does not display on the XFCE desktop, only the CD-ROM of huawei  is displayed on the desktop.
The CD-ROM can be manually mounted but nothing can be done because thunar does not detect the system of  the hardware of huawei. How to detect huawei in thunar and mount manually?

Hello  fungus!

Corrected the topic, and  the  detection  the  terminal result. Can you explain how I proceed to upload the image here? Thank.

Only update the system in this way # apt-get update, but firefox-esr is not updated and is in the old version of 52 in the devuan repositories.

Usually when you put other repositories in this case of Debian systemd, the system breaks down and gives many errors.

The only repositories in the sources.list file are these and none more. 

deb [url]http://auto.mirror.devuan.org/merged/[/url] jessie main non-free contrib 
deb-src [url]http://auto.mirror.devuan.org/merged/[/url] jessie main non-free contrib 

# jessie-security, previously known as 'volatile'
deb [url]http://auto.mirror.devuan.org/merged/[/url] jessie-security main contrib non-free 
deb-src [url]http://auto.mirror.devuan.org/merged/[/url] jessie-security main contrib non-free 

# jessie-updates, previously known as 'volatile'
deb [url]http://auto.mirror.devuan.org/merged/[/url] jessie-updates main contrib non-free 
deb-src [url]http://auto.mirror.devuan.org/merged/[/url] jessie-updates main contrib non-free 

GNU-Ring is the replacement for skype in Linux, only this in packages with  format .deb, and do not leave install it on devuan, it generates error.