2.4 Nightly Deviation Builds The Nightly builds are versions of Deviation with additional features beyond the Deviation 4.0.1 release version. The Nightly builds are provided to allow the Deviation community to fully exercise new features so the community can provide feedback and suggestions for improvement. As a user, you recognize that Deviation is a community supported software system, and members of this community can contribute by verifying, validating or commenting on the features that they've used. These builds are published when new features are added to the Deviation core feature set, when major bugs are corrected and when new hardware support is added. The nightly builds are tested but not to the rigorous extent of a full release. Please read this post! [Note: Insert hyperlink ]http://www.deviationtx.com/forum/5-news-announcements/1416-nightly-builds The ONLINE User Manual for Deviation is regularly reviewed and updated to include information about new common features. Additionally, while best efforts are made by the Deviation community to update these User Guides, this documentation MAY NOT fully describe the features of the nightly builds. Any Deviation user with an update or change to the manual can submit additions and changes. [where?] So should you load the Deviation 4.0.1 release or should you load a Nightly? Your own requirements will determine the answer to that question. If you use Walkera, Spectrum and Flysky models, and any number of variations of the WLToys V2x2 quads, the Deviation 4.0.1 release will be sufficient. If you have one of many newer small quads, or if you want support for additional hardware beyond additional transmitter modules, you should consider using the Nightly build. You can install the Nightly builds in the same way you install the Deviation 4.0.1 release. If you are also adding hardware modifications, such as switches or transmitter modules, you should install the Deviation Nightly build first and review the available features. After Deviation is running, install your hardware and modify any settings to support your modifications. This helps you determine the source of issues later for troubleshooting. 2.5 Test Builds: Test Builds are for experienced users only. The Deviation Test builds are prepared by software designers to test new features or hardware options, and require a higher level of experience. These builds may also require specific transmitter configuration or hardware mods. Some test builds require that you install the latest Nightly prior to installation. DO NOT INSTALL A TEST BUILD until you read the thread detailing the reason for that build.