Replicant

h1. Galaxy S (I9000) Installation

*Warning: installing an operating system, such as Replicant, may void your device's warranty and will erase the data stored on the device.*

h2. Prerequisites 

In order to install Replicant on your device, it is assumed that you have a computer running a GNU/Linux operating system and everything necessary to connect your device to the computer through USB available. Moreover, it is assumed that anyone performing the installation knows how to use command lines in a terminal and has basic knowledge about it.

h2. Before the installation

Some preliminary steps may be necessary to achieve best compatibility with your device. These steps may require more advanced technical skills than the rest of the process: make sure you know what you are doing!

h3. Flashing the Android 2.3 partitioning layout

If your phone is currently running Android 2.2, you need to upgrade it to a newer version, at least Android 2.3 or it will be impossible to flash Replicant to the device.

h3. Installing CyanogenMod

It is required to install CyanogenMod prior to Replicant as it'll solve possible issues with the modem image (the modem image bust me installed in @/radio/modem.bin@ and symlinked to @/dev/block/bml12@).

You can find official CyanogenMod installation instructions at: http://wiki.cyanogenmod.org/index.php?title=Install_CM_for_galaxysmtd

h2. Downloading the files

The first step in the installation process is to download and set up the files that will be used to install Replicant to the device. The files must be downloaded on your computer first.

1. Find out what the latest image is: check out the @Last image@ part of the general table on [[GalaxySI9000]]

2. Download *all* the files listed for the device (including the checksum and the signatures) on [[ReplicantImages]] for the latest image

2. Make sure you have added the [[ReplicantReleaseKey|Replicant release key]] to your GPG keyring

3. Check the signature of the files:

<pre>

gpg --armor --verify path/to/replicant-4.2-galaxysmtd.sig path/to/replicant-4.2-galaxysmtd.zip

gpg --armor --verify path/to/recovery.img.sig path/to/recovery.img

</pre>

4. Make sure the check succeeds, *do not install anything if it doesn't*!

5. Check the checksum of the files:

<pre>

md5sum -c galaxysmtd.md5

</pre>

6. Make sure the check succeeds, *do not install anything if it doesn't*!

h2. Installing heimdall

The heimdall tool is required to flash the recovery image to the device.

Instructions to install heimdall: [[ToolsInstallation#Heimdall|ToolsInstallation]]

h2. Copying the files to the device

There are two means of pushing the system zip to the device:

* Using the storage of the device

* Using the ADB tool to perform sideload

h3. Using the storage of the device

You can either complete this step by using the device's internal storage or by using an external micro-SD card.

h4. Using the internal storage

1. Make sure the device is started up and has an Android system running

2. Connect the USB cable to both the computer and the device

3. Enable USB mass storage on the device

4. Mount the mass storage on the computer

5. Copy the @replicant-4.2-galaxysmtd.zip@ file at the origin of the mass storage

6. Safely unmount the mass storage on the computer

7. Disable USB mass storage on the device

h4. Using a micro-SD card

1. Connect the micro-SD card to the computer (e.g. using an USB card reader)

2. Mount the micro-SD card on the computer

3. Copy the @replicant-4.2-galaxysmtd.zip@ file at the origin of the micro-SD card

4. Safely unmount the micro-SD card on the computer

5. Disconnect the micro-SD card from the computer

6. Insert the micro-SD card in the device (make sure it is turned off before inserting the card)

h3. Installing ADB

Instructions to install ADB: [[ToolsInstallation#ADB|ToolsInstallation]]

h2. Preparing the device

The next step in the installation process is to prepare the device for heimdall mode.

1. Make sure the device is completely turned off and the USB cable is disconnected from the device

2. Start the device by holding the following key combination: *Volume down, Select, Power*

3. Hold the key combination until the device shows *Downloading*

4. Connect the USB cable to both the computer and the device

h2. Installing the images

Now that both the computer and the device are set up, it is time to actually install the images to the device.

1. Install the recovery image to the device:

<pre>

heimdall flash --KERNEL path/to/recovery.img

</pre>

2. Make sure the device reboots to recovery

3. Select *install zip* (using the volume keys to navigate and the power key to select)

h3. Using the storage of the device

h4. Using the internal storage

4. Select *install zip from internal sdcard*

5. Select the system zip: *replicant-4.2-galaxysmtd.zip*

   Note: if your device was running Android 4.2 and later, it may be located in the *0* directory

6. Confirm the installation

h4. Using a micro-SD card

4. Select *install zip from sdcard*

5. Select the system zip: *replicant-4.2-galaxysmtd.zip*

   Note: if your device was running Android 4.2 and later, it may be located in the *0* directory

6. Confirm the installation

h3. Using ADB sideload

4. Select *install zip from sideload*

5. Back to the host computer, load the system zip with sideload:

<pre>

adb sideload path/to/replicant-4.2-galaxysmtd.zip

</pre>

6. Make sure the file is being transfered

h3. Completing the installation

8. Select *Go Back* (if necessary) to get back to the general menu

8. Select *wipe data/factory reset*

9. Confirm the data wipe by selecting *Yes -- delete all user data*

10. Select *Reboot system now* to reboot the device

*Your device should now be running Replicant!*