ok, aber
Install tools
Reading package lists...
Building dependency tree...
Reading state information...
The following extra packages will be installed:
libpci3 libudev1 libusb-1.0-0
The following NEW packages will be installed:
libpci3 libudev1 libusb-1.0-0 tools
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 1.288 kB of archives.
After this operation, 3.760 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
libudev1 libpci3 libusb-1.0-0 tools
Authentication warning overridden.
Get:1 http://www.minidvblinux.de/download/5.0.0/files/ testing/main libudev1 amd64 215-~1 [32,1 kB]
Get:2 http://www.minidvblinux.de/download/5.0.0/files/ testing/main libpci3 amd64 3.2.1-~1 [24,7 kB]
Get:3 http://www.minidvblinux.de/download/5.0.0/files/ testing/main libusb-1.0-0 amd64 1.0.19-~1 [45,6 kB]
Get:4 http://www.minidvblinux.de/download/5.0.0/files/ testing/main tools amd64 0-17 [1.185 kB]
Fetched 1.286 kB in 0s (1.721 kB/s)
E: Failed to fetch http://www.minidvblinux.de/download/5.0.0/files/testing/amd64/libudev1_215-~1_amd64.deb Size mismatch
E: Failed to fetch http://www.minidvblinux.de/download/5.0.0/files/testing/amd64/libpci3_3.2.1-~1_amd64.deb Size mismatch
E: Failed to fetch http://www.minidvblinux.de/download/5.0.0/files/testing/amd64/libusb-1.0-0_1.0.19-~1_amd64.deb Size mismatch
E: Failed to fetch http://www.minidvblinux.de/download/5.0.0/files/testing/amd64/tools_0-17_amd64.deb Size mismatch
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?