Uploading file with latin characters such as á,é,í,ó,ú and ñ in Codeigniter

Uploading file with latin characters such as á,é,í,ó,ú and ñ in Codeigniter

Hi I'm having problems with the file uploading in CodeIgniter with files
that have latin characters, when I upload them the name that I echo is
correctly shown but in the folder where I upload the file the name
changes, for example I have this File:
"Tour al Volcán del Totumo y a los Manglares.docx"
When I echo the name it's shown like that but in the folder where the file
is stored is shown like:
"Tour al Volcán del Totumo y a los Manglares.docx"
I've looked everywhere and I haven't been able so solve this, also I have
made configurations such as the utf-8 charset and all that stuff.