update method :
first,see your version ,and then replace files with
View attachment 26441
if you have sql ,please remember to run
View attachment 26442
replace and run upgrade.sql
upgrade to lastest version ,like 4.3.5,
and
copy default
connect.php files to replace
copy default
to replace
finished upgrading bello.
Of course, you can also use the database comparison tool, like navicat, sqlyog etc,
and easy to upgrade your database