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Changes to Bootloader, Recovery, and the joy of unlocking Introduction

Edit by David Spalding

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Introduction
Android phones, particularly the developer-friendly Nexus models from Google, are especially suited for unlocking and tinkering with. The OS, based upon Linux, is modular enough to allow replacement and upgrading of particular components of the firmware: bootloader, recovery, boot, radio, etc. [ … ] Team Win (TWRP) and ClockworkMod (CWM) are the most popular third party ''recovery'' replacements, and are available for many Android devices. [ … ] How often these are updated, and how accessible to the user, will vary from one manufacturer to another, and from one model to another. [ … ] === Tools === [ … ] The basic tools for working with a Android device is the Google Android Software Development Kit (SDK), which included tools like adb (Android Debug Bridge) and fastboot. There are third party "lite" versions of the basic tools for most operating systems. Some GUI tools take the complexity out of using command line tools to perform common operations. [ … ] == Warning == [ … ] Unlocking, flashing, rooting your phone may void the warranty. You are also at risk for "bricking" (rendering inoperable and irreparable) your phone. You assume full liability and responsibility for attempting to follow any of these steps. [ … ] == Further Information == [ … ] '''Google Nexus''' * [http://developer.android.com/tools/device.html|Google Nexus: Using Hardware Devices] * [https://source.android.com/source/running.html#booting-into-fastboot-mode|Google Nexus: Booting into fastboot (bootloader)] * [https://code.google.com/archive/p/adb-fastboot-install/|ADB Fastboot Install (MacOS, Linux)] '''XDA developer forums''' * [http://forum.xda-developers.com/showthread.php?p=42407269#post42407269|ADB Fastboot for Windows] * [http://forum.xda-developers.com/|XDA Forums] *
Android phones, particularly the developer-friendly Nexus models from Google, are especially suited for unlocking and tinkering with. The OS, based upon Linux, is modular enough to allow replacement and upgrading of particular components of the firmware: bootloader, recovery, boot, radio, etc. [ … ] Team Win (TWRP) and ClockworkMod (CWM) are the most popular third party ''recovery'' replacements, and are available for many Android devices. [ … ] How often these are updated, and how accessible to the user, will vary from one manufacturer to another, and from one model to another. [ … ] === Tools === [ … ] The basic tools for working with a Android device is the Google Android Software Development Kit (SDK), which included tools like adb (Android Debug Bridge) and fastboot. There are third party "lite" versions of the basic tools for most operating systems. Some GUI tools take the complexity out of using command line tools to perform common operations. [ … ] == Warning == [ … ] Unlocking, flashing, rooting your phone may void the warranty. You are also at risk for "bricking" (rendering inoperable and irreparable) your phone. You assume full liability and responsibility for attempting to follow any of these steps. [ … ] == Further Information == [ … ] '''Google Nexus''' * [http://developer.android.com/tools/device.html|Google Nexus: Using Hardware Devices] * [https://source.android.com/source/running.html#booting-into-fastboot-mode|Google Nexus: Booting into fastboot (bootloader)] * [https://code.google.com/archive/p/adb-fastboot-install/|ADB Fastboot Install (MacOS, Linux)] '''XDA developer forums''' * [http://forum.xda-developers.com/showthread.php?p=42407269#post42407269|ADB Fastboot for Windows] * [http://forum.xda-developers.com/|XDA Forums] *
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