Upgrade from v4.0 to v4.1 Remount the disk read/write (remount w). Make sure to rename or backup files that you have made changes to (rc.local or similar) and is included in this upgrade. Copy the patch to /tmp and in the /tmp directory do: tar Uzxpf /tmp/patch.40-41.tar.gz Adjust config files, restart daemons and remount the disk read-only (remount r). - - - - - - - - - - - - - - - - - - - - - - - - - - - Added or changed files (included in the tar file): -r--r--r-- 1 root root 1250 Mar 7 15:36 ./README.txt -rw-r--r-- 1 root root 5 Feb 27 16:05 ./etc/.version -rw------- 1 root root 135 Mar 7 13:32 ./etc/hosts.allow -rw------- 1 root root 641 Feb 27 16:47 ./etc/lilo.conf -r--r--r-- 1 root root 26287 Mar 7 11:54 ./etc/ssh/primes -r--r--r-- 1 root root 1156 Mar 7 12:05 ./etc/ssh/ssh_config -r--r--r-- 1 root root 1440 Mar 7 13:35 ./etc/ssh/sshd_config -r-x------ 1 root root 18389 Mar 7 13:54 ./sbin/configure* ---x------ 1 root root 90564 Mar 7 14:13 ./sbin/insmod* ---x------ 1 root root 22440 Mar 7 12:03 ./usr/bin/scp* ---x------ 1 root root 58172 Mar 7 13:37 ./usr/bin/sftp* ---x------ 1 root root 49564 Mar 7 13:34 ./usr/bin/sftp-server* ---x------ 1 root root 647436 Mar 7 12:02 ./usr/bin/ssh* ---x------ 1 root root 512688 Mar 7 15:16 ./usr/bin/ssh-keygen* ---x------ 1 root root 599456 Mar 7 12:02 ./usr/bin/sshd* Stuff that has been removed or must be changed by hand: Edit /etc/motd to change the version number. Remove: /usr/bin/ktrace /usr/bin/s*1