Moto G4 Play (motorola-harpia)

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Motorola Moto G4 Play
Moto G4 Play running Weston
Moto G4 Play running Weston
Manufacturer Motorola
Name Moto G4 Play
Codename harpia
Released 2016
Original software Android 6.0.1
Chipset Qualcomm MSM8916 Snapdragon 410
CPU Quad-core 1.21GHz Cortex A53
GPU Adreno 306
Display HD (720x1280)
Storage 8GB or 16GB
Memory 1GB or 2GB


  • the-returning-void


What works

  • USB Networking
  • Graphical display
  • Xorg
  • Modem (partially?)
  • SMS

What does not work

  • Wifi (wlan0 device comes up with firmware and custom kernel)

How to enter flash mode

Hold down POWER + Vol Down while booting to enter Flash Mode.



Configure your kernel and enable the prima wifi staging driver

pmbootstrap menuconfig linux-motorola-harpia

pmbootstrap build linux-motorola-harpia

On the device

apk add wcnss-wlan

/etc/init.d/wcnss-wlan start

Firmware {Wifi/Modem} (TODO: package it)

On the device extract firmware cd /lib/firmware

mkdir postmarketos

cd postmarketos

mount /dev/disk/by-partlabel/system /mnt

cp -ap /mnt/etc/firmware/* /lib/firmware/postmarketos

umount /mnt

mount /dev/disk/by-partlabel/fsg /mnt

cp -ap /mnt/* /lib/firmware/postmarketos

umount /mnt

mount /dev/disk/by-partlabel/modem /mnt

cp -ap /mnt/image/* /lib/firmware/postmarketos

umount /mnt

mount /dev/disk/by-partlabel/persist /mnt

mkdir -p wlan/prima

cp -ap /mnt/WCNSS_wlan_dictionary.dat wlan/prima/

umount /mnt

Make a link in case the firmware path doesn't include /lib/firmware/postmarketos

cd /lib/firmware

ln -s /lib/firmware/postmarketos/* /lib/firmware/


Make the necesary links for qcom_rmtfs

cd /boot

ln -s /dev/disk/by-partlabel/modemst1 modem_fs1

ln -s /dev/disk/by-partlabel/modemst2 modem_fs2

ln -s /dev/disk/by-partlabel/fsg modem_fsg

Install necessary software

apk add modem-qcom-msm-downstream-common qcom_rmtfs libsmdpkt_wrapper libqipcrtr4msmipc ofono

Start the wcnss-wlan service to initialize the wifi card (helps the modem?) /etc/init.d/wcnss-wlan start

Start a tmux for multiple windows tmux

Start qcom_rmtfs on a terminal

export LD_PRELOAD=/usr/lib/preload/

qcom_rmtfs -v

Start ofonod on another terminal

export LD_PRELOAD=/usr/lib/preload/

ofonod -d -n

Send an SMS!

export PHONE_NUMBER="<number to send sms to ex: 1234567890>"

sudo dbus-send --print-reply --system --dest=org.ofono /gobi_0 org.ofono.Modem.SetProperty string:"Powered" variant:boolean:"true"

sudo dbus-send --print-reply --system --dest=org.ofono /gobi_0 org.ofono.Modem.GetProperties

sudo dbus-send --print-reply --system --dest=org.ofono /gobi_0 org.ofono.Modem.SetProperty string:"Online" variant:boolean:"true"

sudo dbus-send --system --print-reply --dest=org.ofono /gobi_0 org.ofono.MessageManager.SendMessage string:"$PHONE_NUMBER" string:"Hello world! -postmarketOS"

Receive SMS like this (might be spammy if you have other DBus apps): sudo dbus-monitor

See also

  • Device requires msm-refresher to get a display past the boot splash, even though cat /sys/class/graphics/fb0/modes > /sys/class/graphics/fb0/mode doesn't fix the display
  • Steps outlined for Screen is blank outside of Weston is still required to get a display after the boot splash
  • Xorg starts with a blank display, to make the screen show ssh into the device and run sudo osk-sdl -t to fix display