Quick Start

We are providing custom ROMs for you to quickly enjoy the benefit brought by PowerPhone.

# 1. Supported Smartphones

Make sure you have one of the following smartphones:

(Results shown in the paper are mostly done using racer.)

If you don't have above-mentioned smartphones, please check Smartphones Model Info to see if you can access smartphones that are similar to above-mentioned and are possible compatible to our published system images.

Or you can reconfigure a smartphone from scratch.

# 2. Tooling

You will need to install Android SDK Platform-Toolsopen in new window to access the command-line utilities we're going to use such as adb and fastboot. After downloading, unzip it to your desired location, and add it to your environment variable $PATH.

Samsung does not implement fastboot, therefore you will need Odinopen in new window (Windows GUI) or Heimdall suiteopen in new window(Multi-platform CLI)

# 3. Unlock Bootloader

On factory-setting, the bootloader of the Android smartphones is locked, meaning it can only flash signed images from the manufacturer. We need to unlock it before applying our systems. In general, by Googleing "PHONE_MODEL unlock bootloader" should lead you to tutorials of this producers. Helpful links:

• Bootloader overviewopen in new window.
• Apply for unlocking Mi devicesopen in new window.
• Unlock Motorola devicesopen in new window

Note that bootloader locks are different from the carrier locksopen in new window, though normally you will need to unlock carrier locks before unlocking bootloader.

# 4. Flash Custom Custom Recovery Image

1. Download custom recovery image from our Releaseopen in new window.
2. Reboot smartphone to bootloader mode by running adb reboot bootloader.
3. Flash custom recovery by fastboot flash recovery xxxxx.img. For Samsung smartphones, you'll need Odinopen in new window to do so.
4. Reboot to recovery through fastboot reboot recovery. For Samsung smartphones, reboot to recovery through volume keys.

# 5. Flash Our System Image

1. Download our system image (.zip) from our Releaseopen in new window.
2. Reboot into custom recovery through fastboot reboot recovery if you are in bootloader mode, or through adb reboot recovery if you are in the Android system.
3. In the custom recovery, find and enter "ADB Sideload" mode.
4. On the computer, run adb sideload xxxx.zip to install our Android distribution.

# 6. Play & Record Audios

1. Run adb root to get root privilege.
2. Run adb shell to enter the shell of the smartphone.
3. Create a playground working directory for yourself mkdir /data/tmp/.
4. Explore scriptsopen in new window in our repo.
5. Copy corresponding script to your working directory.
6. Use our scripts to play and / or record audio from/to files.
7. You can use adb pull and adb push commands to fetch / send files to the smartphone.