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Mark Matney, 07/25/2019 04:21 AM
add section with instructions for choosing a device

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h1. ReplicantInstallation
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h2. Installation overview
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The installation of Replicant is several steps:
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* First you install a [[RecoveryImage|Replicant recovery image]].
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* Then you download Replicant and use the recovery to install it.
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h2. Obtain a supported device
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Replicant can only be installed on one of the [[Index#Supported-devices|supported devices]]. Please make sure that you have the correct device model before proceeding.
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*The model number on your device must exactly match the model number specified on the Replicant wiki page for that device.* For example, if you want to use the [[GalaxyS2I9100|Galaxy S 2]], you must obtain the GT-I9100 model (not SGH-I777, etc.).
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h2. Backup your data
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Before attempting to install Replicant, you need to backup everything you can from the device as most of the data will be erased during the installation.
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You can skip this step if you have no data you want to keep.
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h2. Recovery installation
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To install the Replicant recovery, follow the instructions on the [[RecoveryInstallationWithHeimdall|Recovery installation with Heimdall]] wiki page.
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h2. Wipe the existing system, cache and data partitions
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Once this is done, you then need to wipe the existing system, cache and data partitions. This is to ensure that the partitions are formatted correctly.
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h3. Wipe system partition
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To wipe the system partition, once you are in the recovery:
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# Select Advanced
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# Select Wipe system partition
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# It will ask you to confirm the wipe, so you will need to select Yes to confirm it.
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# Press the back key to get back to the general menu
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h3. Wipe cache and data partitions
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To then wipe the cache and data partitions:
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# Select Factory reset
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# Select Wipe data (keep media)
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# It will ask you to confirm the wipe, so you will need to select Yes to confirm it.
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# Press the back key to get back to the general menu
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h2. Using the recovery to install Replicant
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Installing Replicant can be done either by:
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* [[InstallOrUpgradeReplicantWithoutAComputer|downloading the installation files the device, without the need of a computer]]
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* [[InstallOrUpgradeReplicantFromMicroSD|using a computer and a microSD]]
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* [[InstallOrUpgradeReplicantFromInternalStorage|using a computer and the internal storage to store the installation files]]
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Once this is done, you will need to do a factory reset.
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h2. Factory reset
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To do a Factory reset, you need to be in the recovery.
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# Select Factory reset
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# Select Wipe data (keep media)
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# It will ask you to confirm the wipe, so you will need to select Yes to confirm it.
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# Press the back key to get back to the general menu
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h2. Reboot the device
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Once the factory reset is done, you can then reboot the device.
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In the recovery:
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# Select Reboot system now to reboot the device
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# Your device now has Replicant installed!
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h2. Backup the modem data partition (called EFS)
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Some of the devices supported by Replicant have a partition that contains the modem data (called EFS).
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Now that Replicant is installed, it's a good idea to do a backup of it if your device has one.
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This way it would be way easier to restore it if it becomes corrupted ("it can sometimes happen with Replicant":https://redmine.replicant.us/issues/1869).
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For a list of devices that have a modem data partition, and for instructions on how to do a backup of it, see the [[BackupTheEFS|BackupTheEFS]] wiki page.