Duvel

Hello
Can you help me please
I'm bricking Dahua VTO4202F-P with TFTPServer and I'm getting
Client 192.168.1.108:3541 root\failed.txt, File not found or No Access

commands.txt is as bilow
tftp 0x82000000 kernel.img; flwrite
tftp 0x82000000 partition-x.cramfs.img;flwrite
tftp 0x82000000 romfs-x.squashfs.img; flwrite
tftp 0x82000000 data-x.squashfs.img; flwrite
tftp 0x82000000 web-x.squashfs.img; flwrite
tftp 0x82000000 sign.img; flwrite
sleep 5

The quieter you become, the more you are able to hear.