Hello everyone!
If you think installing a custom ROM or bootloader unlock a device, you will need to install the Android SDK on your PC with WIndows. This tutorial works for all versions of Windows (XP, Vista, 7, or 8) but not for Mac or Linux.
Android SDK and Android Software Developer Kit is the tool used by developers when creating applications for Android. It is, in general, a number of codes to be installed in Windows to allow you to access the system from your Android from PC.
Using Android SDK, as well as developing applications, you can perform other actions such as installing ROMs, unlock bootloader.
warnings
SDK requires some prerequisites that you can see at the following link: Android SDK requirements.
It is essential to download to your PC or Java Developer Kit JDK from the following link: Download JDK.
Steps to Install Android SDK or ADB in Windows
1 - Download the file from this link: Android SDK and save it to your desktop.
2 - Extract the file and store it on the C drive so that it looks like this: C: \ android-sdk-windows. Then open SDK Manager.
3 - From there, select "Android SDK Platform-tools, revision 6" to start the installation procedure.
4 - Access to the path "Available Packages -> Third Party Accessories -> Google Inc. add-ons -> Check Google USB Driver package, revision 4 (?" Available Packages -> Third party Add-ons -> Google Inc. add-ons -> check Google USB Driver package, revision 4 ") and install it too. Then close the Manager.
5 - On your PC click Windows / Control Panel / System Properties button.
6 - Select the "Advanced system settings" (Advanced System settings) option, followed by "Environment Variables" (Environment Variables).
7 - Now let's set the variables; for it scroll down until you see "Path" (Path) - click on that button.
8 - On the Value field at the end of the LIEA add the following "; C: \ android-sdk-windows \ platform-tools, C: \ android-sdk-windows \ tools".
9 - Click Exit or Exit.
10 - Turn on your Android USB Debugging option you'll find in the Settings menu in the Options section of developers.
11 - Connect your Android to the computer via USB cable.
12 - Drivers Install Android on your computer.
13 - Access to the command prompt on your computer by pressing the Windows button and escribienedo "cmd" in the search.
14 - In the window that opens, type "adb devices". By giving you enter should see smartphone. If not, an error must have happened.
15 - If there has been an error, open "My Computer" and click on "Device Manager" or "Device Manager".
16 - A yellow exclamation mark appears next to unknown device space.
17 - Click the right mouse button on ADB and select "Update Driver Software -> Browse -> Choose."
18 - Click "Have disk -> browse".
19 - Access to the "C: \ android-sdk-windows \ extras \ google \ usb_driver and choose android_winusb.inf." Route and click on Android ADB Interface.
20 - Ignore the warnings and when the installation process has completed, reopen the cmd on your computer, type "adb devices" again; this time it should work.
That's it!
I hope that the process will work. If not, do not hesitate to discuss your problems in this thread.
A greeting!