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CyanogenMod offers features and options not found in the official firmware distributed by mobile device vendors. Features supported by CyanogenMod include native theming support,FLAC audio codec support, a large Access Point Name list, an OpenVPN client, Privacy Guard – a per-application permission management app, support for tethering over common interfaces, CPU overclocking and other performance enhancements, soft buttons and other "tablet tweaks", toggles in the notification pull-down (such as Wi-Fi, Bluetooth and GPS), as well as other interface enhancements. CyanogenMod does not contain spyware or bloatware, according to its developers.CyanogenMod is also stated to increase performance and reliability compared with official firmware releases.
Firmware History and Development
CyanogenMod 7
CyanogenMod 7 firmware is based on Android 2.3 Gingerbread with additional custom code contributed by the CyanogenMod Team. The custom portions of CyanogenMod are primarily written by Cyanogen (Steve Kondik) but include contributions from the xda-developers community (such as an improved launcher tray, dialer, and browser) and code from established open source projects (such as BusyBox in the shell).
CyanogenMod 7 development began when Google released Android 2.3's source code.On 15 February 2011, the first release candidates of CyanogenMod 7 were rolled out on several of the supported devices.The fourth release candidate was released on 30 March 2011 and brought increased support for the Nook Color and similar devices as well as many bug fixes.On 11 April 2011, the public version of CyanogenMod 7.0 was released, based on Android 2.3.3.CyanogenMod 7.1 was released on 10 October 2011, based on Android 2.3.4.The latest stable version, CyanogenMod 7.2 was released on 16 June 2012, based on Android 2.3.7,bringing a predictive phone dialer, lock-screen updates, ICS animation backports and many bug fixes.
CyanogenMod 8
CyanogenMod version 8 was planned to be based on Android 3.x Honeycomb. However, no source code for Honeycomb was provided by Google until it appeared in the tree history of the Android 4.0 Ice Cream Sandwich source release. Since Honeycomb was superseded by Ice Cream Sandwich, the release schedule advanced from CyanogenMod 7 directly to CyanogenMod 9.
CyanogenMod 9
CyanogenMod 9 is based on Google's Android 4.0 Ice Cream Sandwich.Steve Kondik and his team have announced that they had begun work on the new release after Google released the source code of Android 4.0.1.Development on this release took longer than with previous releases due to the significance of the changes between Android 2.3 "Gingerbread" and 4.0 "Ice Cream Sandwich", and the team took this opportunity to clarify their vision for the ROM and rethink any modifications which were no longer necessary due to improvements within Android.
By the last days of November 2011, some alpha versions had been distributed, in particular for the Samsung mobile phones Nexus S and Galaxy S. On 9 August 2012, after various betas and release candidates, CyanogenMod released the finished version of CyanogenMod 9.Given that the next version of Android, 4.1 "Jelly Bean", had already been released by that point, development moved swiftly on to CyanogenMod 10. On 29 August 2012, CyanogenMod released a minor update, version 9.1.0, bringing bugfixes and an app called SimplyTapp for NFC payments.
On 4 April 2012, during development, CyanogenMod unveiled "Cid", the new CyanogenMod mascot, which replaced the previous mascot, Andy the skateboarding "bugdroid".Designed by user Ciao, Cid (C.I.D.) is an abbreviation of "Cyanogenmod ID".
CyanogenMod 10
In early July 2012, the CyanogenMod team announced, via its Google+ account, that CyanogenMod 10 would be based on Android 4.1 Jelly Bean.Nightly builds of CyanogenMod 10 were made available for many devices supported by CyanogenMod 9.Starting with the September 2012 M1 build, the CyanogenMod team began monthly "M-series" releases. At the beginning of each month, a soft freeze of the CyanogenMod codebase is put into effect; once the team deems a build stable enough for daily use, it is released under the milestone or "M" series.
On November 13, 2012, final stable builds were released for several devices.
CyanogenMod 10.1
CyanogenMod 10.1 is based on Android 4.2 Jelly Bean.Nightly versions are currently being released for an array of devices, along with M Snapshots (Monthly Snapshots) which are being released for select devices.
On June 24, 2013, the CyanogenMod 10.1.0 codebase (based on Android version 4.2.2) was moved to "stable" status, with a majority of currently-supported devices receiving stable builds on the same day.CyanogenMod's developers have indicated that they will continue the Monthly Snapshot schedule to incorporate new features until the next Cyanogenmod release. Unfortunately, many devices utilizing Samsung Exynos and Nvidia Tegra 2 SoC's were not part of the initial release.
CyanogenMod 10.2
The first nightly release of CyanogenMod 10.2, which is based on Android 4.3 Jelly Bean, began rolling out for a selected number of devices on 14 August 2013.It brings in some new enhancements to the system, such as Bluetooth Low Energy and OpenGL ES 3.0 support, a renewed Phone app, 4K resolution support as well as many security and stability improvements.
CyanogenMod 11
On 6 November 2013 the CyanogenMod team started pushing the code of CyanogenMod 11, based on Android 4.4 KitKat, to GitHub.The first nightly release of CyanogenMod 11.0 began rolling out for a selected number of devices on 5 December 2013.Since then, M-builds have been released every month for supported devices, offering a more stable experience than nightlies. With build M6 it was clarified that CyanogenMod would no longer be releasing final builds specially tagged "stable", but instead would utilize the rolling release model with M-builds representing a stable channel.
CyanogenMod 12
CM12 is based on Android 5.0 "Lollipop". On 14 November 2014, the CyanogenMod team announced that they will enable CM12 nightlies by the end of November 2014, or in early December 2014.
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