Debian 8: How to update phpMyAdmin to latest stable version and use php 7.1?

Hello team!
I'm tried to update phpmyadmin to latest stable version (4.6.6), my server have the version 4.2.12deb2+deb8u2. (Debian 8 updated).

I followed the next instructions:

Code:

cd /tmp/
ls
wget https://files.phpmyadmin.net/phpMyAdmin/4.6.6/phpMyAdmin-4.6.6-all-languages.tar.gz
tar xzf phpMyAdmin-4.6.6-all-languages.tar.gz
ls
mv /usr/share/phpmyadmin/ /usr/share/phpmyadmin2/
mv phpMyAdmin-4.6.6-all-languages /usr/share/phpmyadmin
ls -l /usr/share/phpmyadmin
service apache2 restart
service mysql restart

My problem is:
The new phpmyadmin version don't read the /etc/phpmyadmin/ configuration. The reason to using /etc/phpmyadmin/ is to no be to change files over every update version.

And I want to use PHP 7.1 over the PHP version 5.6.29-0+deb8u1 (default php version on apache), I have all ready instaled PHP 7.1 using the tutorial: https://www.howtoforge.com/tutorial/how-to-install-php-7-on-debian/

The lastest phpMyAdmin version: https://www.phpmyadmin.net/downloads/

Thanks!

 

I get this from 2012, maybe this works?
http://debian-tutorials.blogspot.mx/2012/02/upgrading-to-latest-phpmyadmin-version.html

The recomendation is to use a Ubuntu repository to get update phpMyAdmin.