FILEX rewrite

Hallo,

I'm using U5A9NJQ demoboard with FILEX. I have something that doesn't work, the first time I write on a file, all is correct, but if I rewrite on the same portion of the file, the writing seems to be correct, but, when reading, the content hasn't changed. Do you have found something similar? Is there a project where is possible to have the FILEX working with this demoboard?

Thank you