Shutdown Xampp (Apache, and MySQl)
...$cd /c/xampp
Download desired version of MariaDB
/c/xampp$ wget http://ftp.hosteurope.de/mirror/archive.mariadb.org//mariadb-10.2.10/winx64-packages/mariadb-10.2.10-winx64.zip
Backup existing DB version
/c/xampp$ mv mysql mysql_old
Extra new verion to mysql dir
/c/xampp$ unzip mariadb-10.2.10-winx64.zip
/c/xampp$ rm mariadb-10.2.10-winx64.zip
/c/xampp$ mv mariadb-10.2.10-winx64 mysql
Retrieve old data
/c/xampp$ mv mysql/data/ mysql/data_old
/c/xampp$ cp mysql_old/data/ mysql
Retrieve old backups
/c/xampp$ cp mysql_old/backup/ mysql
Retrieve old scripts
/c/xampp$ cp mysql_old/scripts/ mysql
Reuse existing services
/c/xampp$ cp mysql_old/mysql_installservice.bat mysql
/c/xampp$ cp mysql_old/mysql_uninstallservice.bat mysql
Keep old configurations
/c/xampp$ cp mysql_old/bin/my.ini mysql/bin/
Update old settings
/c/xampp$ vim mysql/bin/my.ini
Make the following changes...
...
+ skip-grant-tables
- skip-federated
+ # skip-federated
- innodb_additional_mem_pool_size=2M
+ # innodb_additional_mem_pool_size=2M
...Finally...
Start :: Apache
Run :: xampp/mysql/bin/mysql_upgrade.exe
Start :: MySQL