im not looking to use n9tweak, i rather use terminal i have flasher or change the config withtin the folders or settings
To change it you should add a line 'maxAttachmentSize=xxx' (where xxx is a size in MBs IIRC) in a 'General' section of the file /home/user/.config/Nokia/Fenix.conf. So, it should looks like: [General] maxAttachmentSize=20