When all of the settings below are applied properly, you can import a file of any size.
The settings in PHP that you likely need to adjust are:
upload_max_filesize
– set this to a value > than your backup
post_max_size
– set this to a value > than your backup
memory_limit
– set this to a value > than your backup
max_execution_time
– set this to 0 (infinite)
Also, please read these two guides:
Yani, can you say again where to change these, or point to a link with the hierarchy? I know there’s wp-config, .htaccess, and .phpini, but not seeing this anywhere.