Editing Softmod (section)

==Function==
Many softmods are [[exploit (computer security)|exploits]] combined together, known as exploit chains. The first requirement is being able to run [[code signing|unsigned code]], known as userland exploits. [[Web browser]]s are very common vectors for this, most of which use the [[WebKit]] [[browser engine]], which is notably [[open source]] and as a result, vulnerabilities are widely known. Another common vector of userland exploit are [[Saved game|savegame exploits]], which are specially crafted savegame files that exploit vulnerabilities in a game's code allowing for unsigned code. The second requirement is [[privilege escalation]], typically compromising the [[kernel (operating system)|kernel]], unlocking secure parts of the system. Depending on the security architecture, additional privilege escalation may be required, such as defeating a [[hypervisor]].

Other examples of softmods are maliciously signed firmware, such as custom firmware on the [[PlayStation 3]], which was made possible due to the master key being released, or gaining control of a process that is very early in the boot cycle, such as the Fusée Gelée [[Boot ROM]] vulnerability for the [[Nintendo Switch]].

Softmods may be permanent (e.g. custom firmware) or temporary (e.g. homebrew enabler) that persist until powering off. Softmods are especially popular among video game consoles, in which they usually enable a [[homebrew (video games)|homebrew environment]] that allow execution of unsigned code. Compared to installing a [[modchip]], a softmod is generally preferred (if available) due to not requiring having to open up the device and perform [[soldering]], which could damage the device hardware. However, attempting to softmod can still damage a device, especially if instructions are not followed correctly. In some cases, it can lead to [[brick (electronics)|bricking]].

Softmods may be used to install or load an alternative operating system (e.g. a [[Linux distribution]]) on a device, as well as reinstate functionality that was removed from the official firmware, such as "OtherOS" on the PlayStation 3.

If a softmodded console connects to its online service, (such as [[Nintendo Switch Online]] on the Nintendo Switch) the console may be banned from the service permanently. Softmods void [[warranty]] due to tampering with device function and as a result, vendors will not honour any existing warranty policy if sent in for repair.