I have a strange issue i am unable to solve. it don't remind it being pointed out in this thread.

I have some files with accent characters in their name, like é è à â, and the like.

Problem is those chars are displayed as white diamond shapes with ? inside. i am aware it is a locale issue, but am unable to pinpoint the sourceand solve this.
Also, i can't manage the files properly. like i can't delete or rename them.

I have the same when i connect via ssh on the phone, also in media app and also in my ftp android client, in gallery app, videos with accent are shown as "Oops, cannot display thumbnail"

I already checked my locale.conf file and set all as en_GB.UTF8

Did someone experience the same and can provide advice?