The Debian system has updated its SP-level packages to version 7.11 and 8.5.
In a Linux system, Debian has a "Update" version, which is equivalent to an SP-level update package in Windows, involving Debian 7 and Debian 8. After installation, the two versions are upgraded to 7.11 and 8.5 respectively. This time, the focus is on security updates and some other problems are resolved.
For version 7.11, this service package update will be the last time, and the LTS team will be responsible for it in the future. For version 8.5, this update contains several important fixes related to AMD's Radeon graphics card crash. In addition, Debian 6 expired on April 9, February this year, and the LTS team has provided an additional two-year "life-saving" service.
For new users, because the "click Update" package exists, you only need to download the latest image to install it completely, and then you do not need to manually install the update Patch.
From: http://www.ithome.com/html/it/231233.htm
Address: http://www.linuxprobe.com/debian-upgrade-patch.html