We have all heard that for a change a rom as well as their have root access it is necessary to enter the recovery mode or press ALT + s, or make a wipe or similar things, well we will try to explain each thing and install a new revery.
To get root access and for later changes of rom we need to use the recovery. The recovery is an application that works as long as we press the HOME + POWER keys at the same time with the phone off and it leaves the phone in a state prior to charging the rom, so we can change it, make a backup of it or modify the properties of the Sd card. When the phone comes from the factory, in this way the only thing that allows us is through connection to the computer and the system console and the SDK to have access to the phone to execute actions. With the new recovery The possibilities of actions to be executed from the phone itself are expanded without having to do it through linux commands on the console. We can for example and depending on the recovery installed, make backups, format sd card, repair partitions of the card, restore a saved backup, change the format of the card extensions, etc…. and only using the phone's trackball.
Los recoverys to install it depend on the type of phone we have either a HTC Magic or Htc Dream or G1. For example for the HTC Magic With 32B plate, this recovery is very complete and the available options are the ones you see in the first image. For the Htc Dream or G1 the most used is the recovery of Cyanogen which is currently on version 1.4.
To install it, the first thing you should do is download the file of the recovery obviously. Unzip it if it is compressed and put it in the tools folder of the Android SDK. These files have an .img extension.
Once you have it in the commented folder we do the following:
- you connect the phone to the computer making sure you have the drivers installed
- You turn off the phone and turn it on fastboot mode, (for the magic pressing back key + power and the g1 power key + camera button)
- You open the console and from the tools folder of the Android SDK you type the following:
- fastboot boot filename.img (where it puts the name of the file, each one writes the name of the file that has been downloaded)
With this, the phone restarts and the image with the recovery running and the options it has, it is functional but not permanently installed. If we turn off the phone and turn it back on recovery mode we will see that we have returned to the previous one recovery that we had.
To permanently install it on the phone we have to do the following:
- With the phone connected to the computer and the card mounted, you copy the recovery file to your sd card and rename it as recovery.img.
- You remove the card
- In the console and from the tools folder of the Android sdk you type
- When I finish installing it we type
adb shell flash_image recovery /sdcard/recovery.img
adb shell reboot
The terminal will restart and the screen with the phone options will appear. Every time we enter recovery mode This screen will appear with all the available options.
SOURCE | forum.xda-developers.com
