4Ext Recovery is a alternative to Clockworkmod (CWM) recovery. At the time of this writing it supports the following devices: HTC Sensation / XE, Incredible S / 2, Desire Z / G2, Desire S, Desire, Desire HD, Inspire 4G, myTouch 4G, Nexus One, Thunderbolt, Evo 3D GSM / CDMA, Amaze Prerequisites: Your phone should be ROOTED and S-OFF. According to the author of the app, an alternative is a unlocked boot loader. I have only used this on a rooted phone with S-Off. Do I recommend it? I can only speak for the HTC Desire HD. For this device I would say yes. While there is nothing wrong with CWM, some HTC Desire HD ROM's require 4Ext Recovery to get all the features. For example, with Android Revolution HD, if you do not use 4Ext Recovery, you wont be able to enable the over clocking daemon. Other than that it is nice, has an easy to use touch interface. This Guide This post on how to install 4Ext Recovery. In the following posts, you will find guides on the most common tasks will also be posted: How to create and restore backups, how to check md5sums and how to do a full wipe and flash a ROM Installing 4Ext Recovery You can download 4Ext Recovery Updater from this link. Two version are available. 4Ext Recovery Updater 4Ext Recovery Control I wont be discussing the differences. When you download 4Ext Recovery Updater you will get a fully functional 3 day preview of all features which is a lot better than I can do in writing. Install the app After downloading the app you will have to install it. You will have to allow installation of non-Market apps to do this. This is usually found in Settings > Security > Than scroll to "Unknown sources" Now that is installed launch 4Ext Recovery Updater. Installing 4Ext Recovery When you launch the app this is what you will see: Select Online install|upgrade. It will ask you for permission to go online and to confirm the model of your phone. If it displays the wrong model, do not proceed. Select 4Ext Recovery Touch v.18.104.22.168 RC 6. I have used this to install four ROM's successfully, and have installed another 15 or so ROM's on v.22.214.171.124 RC 5. All good. By the time you read this, there could be a later version. You can install a later version at your own discretion. In you image, all the options will appear in blue. It is yellow in the picture I posted since I already have it installed. A small window will pop up. Select Install. Its that easy. Your done.