by S.Hashem Hejazi.
I uploaded last version .tgz and extracted it on the server.
then installation started.
but
I faced following error on the database setting page:
QOUTE
Error: Database connection failed
It is possible that the database is overloaded or otherwise not running properly.
The site administrator should also check that the database details have been correctly specified in config.php
Warning: mysqli::mysqli() [mysqli.mysqli]: (28000/1045): Access denied for user '<database-user>'@'localhost' (using password: YES) in /home/<myhostname>/public_html/moodle/lib/dml/mysqli_native_moodle_database.php on line 76
UN-QOUTE
and installatin can not continu...