02. Then under the Software tab click MultiPHP INI Editor
03. Under select a location click domain name
You are interested in the two values post_max_size and upload_max_filesize
upload_max_filesize is the max size of a single file
while post_max_size is the maximum you can upload over all in one sitting
Default post_max_size is currently 8MB. i think its ok
like a similar steps in 4.1 simply update default memory limit 128MB to higher i.e. 250MB or 500MB within memory_limit value.
you can even update max_execution_time only if such errors once faced.