Hi, i see you have vsftpd setup on ubuntu. I had to rebuild my OS ubuntu and setup vsftpd again.

I seem to have trouble with testing ftp and it completing.

The test folder is there, the test file is there but it's size is 0.

ipcamera@kabo:/data/IPCamera/garage$ ls -l
total 68
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:35 ipcamera_test20180430133456
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:45 ipcamera_test20180430134541
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:46 ipcamera_test20180430134635
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:52 ipcamera_test20180430135216
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:57 ipcamera_test20180430135752
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:58 ipcamera_test20180430135758
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:58 ipcamera_test20180430135816
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:58 ipcamera_test20180430135843
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 13:59 ipcamera_test20180430135906
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:10 ipcamera_test20180430141030
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:11 ipcamera_test20180430141101
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:11 ipcamera_test20180430141121
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:11 ipcamera_test20180430141132
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:13 ipcamera_test20180430141347
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:14 ipcamera_test20180430141428
drwxrws---+ 2 ipcamera workgroup 4096 Apr 30 14:01 test
-rw-rw---- 1 ipcamera workgroup 27 Apr 30 14:12 test1
ipcamera@kabo:/data/IPCamera/garage$ cd ipcamera_test20180430141428
ipcamera@kabo:/data/IPCamera/garage/ipcamera_test20180430141428$ ls -l
total 0
-rwxrwx--- 1 ipcamera workgroup 0 Apr 30 14:14 test20180430141428.txt
ipcamera@kabo:/data/IPCamera/garage/ipcamera_test20180430141428$

Are you using the default config for vsftpd?

using latest firmware on 410ws and 411ws, same result.