I could not download files on the 32gb partition Microb, I can only download to removable memory, but only with Opera I can download directly, this problem occurs for a file download via microb.

Before I could download to the removable memory, now I cannot, but only with Microb, Opera works fine.
Now since then I have seen errors in other applications, eg in Freeoffice I can not open the application. Only be opened from x-terminal accessing as root.
Please could help me.
If I have to flash the phone, as you would without losing applications or data.