LG Doubleplay (lg-c729)
| Manufacturer | LG |
|---|---|
| Name | Doubleplay |
| Codename | lg-c729 |
| Released | 2011 |
| Hardware | |
| Chipset | Qualcomm Snapdragon S2 (MSM8255) |
| CPU | 1.0 GHz Scorpion |
| GPU | Adreno 205 |
| Display | 320 x 480 TFT |
| Storage | 2 GB |
| Memory | 512 MB |
| Architecture | armv7 |
| Software | |
| Original software | Android |
| Original version | 2.3 |
| postmarketOS | |
| Category | testing |
| Pre-built images | no |
This device is marked as not booting.
Contributors
- Foldmorepaper
Users owning this device
What Works
Nothing. (besides rooting and kernel building)
Using the lg-c800 device tree, I have begun work on building TWRP. It boots and adb is useable, but no further testing has been done.
What Does Not Work
Everything.
Rooting
The exploit used on the LG Esteem also works on the Doubpleplay. Please see this forum thread on AndroidCentral for instructions. [1]
The tool referenced has a dead download link, but is available through the Internet Archive's Wayback Machine. LG_Esteem_Root.zip on archive.org
The tool runs from a .bat script. Though the changes necessary to run it on linux are trivial, here is the modified script:
run.sh
#!/bin/bash
#####################################
#
# LG Esteem root script
# Linux version
#
# Exploit copyright (C) 2011 Revolutionary
# Scripting for LG Esteem by Dan Rosenberg (@djrbliss)
# Modified for Linux by foldmorepaper (@foldmorepaper)
#
#####################################
#
# Instructions:
#
# 1. Ensure you have the latest drivers installed from LG
#
# 2. Put your device in debugging mode
#
# 3. Attach it via USB
#
# 4. Run this script in the same directory as the rest of the extracted
# zipfile
#
#####################################
echo "[*] LG Esteem root script (Linux version)"
echo "[*] Exploit copyright (C) 2011 Revolutionary"
echo "[*] Scripting for LG Esteem by Dan Rosenberg (@djrbliss)"
echo "[*] Linux script by foldmorepaper (@foldmorepaper)"
echo "[*]"
echo "[*] Before continuing, ensure USB debugging is enabled, that you"
echo "[*] have the latest LG drivers installed, and that your phone is"
echo "[*] connected via USB."
echo "[*]"
read -p "[*] Press enter to root your phone..."
echo "[*]"
echo "[*] Waiting for device..."
adb kill-server
adb wait-for-device
echo "[*] Device found."
echo "[*] Pushing exploit binary..."
adb push zergrush /data/local/tmp/zergrush
adb shell "chmod 755 /data/local/tmp/zergrush"
echo "[*] Running exploit..."
adb shell "echo exit | /data/local/tmp/zergrush"
# Install the goods
echo "[*] Installing root tools..."
adb shell /data/local/tmp/sh -c "mount -orw,remount /dev/block/system /system"
adb shell /data/local/tmp/sh -c "mkdir /system/tmp"
adb shell /data/local/tmp/sh -c "chmod 777 /system/tmp"
adb push su /system/tmp/su
adb push busybox /system/tmp/busybox
adb push Superuser.apk /system/tmp/Superuser.apk
adb shell /data/local/tmp/sh -c "mv /system/tmp/su /system/xbin/su"
adb shell /data/local/tmp/sh -c "mv /system/tmp/Superuser.apk /system/app/Superuser.apk"
adb shell /data/local/tmp/sh -c "mv /system/tmp/busybox /system/xbin/busybox"
adb shell /data/local/tmp/sh -c "chown root /system/xbin/su"
adb shell /data/local/tmp/sh -c "chmod 4755 /system/xbin/su"
adb shell /data/local/tmp/sh -c "ln -s /system/xbin/su /system/bin/su"
adb shell /data/local/tmp/sh -c "chmod 755 /system/xbin/busybox"
adb shell /data/local/tmp/sh -c "/system/xbin/busybox --install /system/xbin/"
# Clean up after ourselves
echo "[*] Cleaning up..."
adb shell /data/local/tmp/sh -c "rmdir /system/tmp"
adb shell "rm /data/local/tmp/* 2>/dev/null"
echo "[*] Rebooting..."
adb reboot
adb wait-for-device
echo "[*] Root complete, enjoy!"
echo "[*] Press any key to exit."
adb kill-server
Additional Info
/proc/partitions
# cat /proc/partitions
major minor #blocks name
179 0 1912832 mmcblk0
179 1 1024 mmcblk0p1
179 2 512 mmcblk0p2
179 3 2048 mmcblk0p3
179 4 1 mmcblk0p4
179 5 4096 mmcblk0p5
179 6 4096 mmcblk0p6
179 7 8192 mmcblk0p7
179 8 4096 mmcblk0p8
179 9 8192 mmcblk0p9
179 10 8192 mmcblk0p10
179 11 28672 mmcblk0p11
179 12 28672 mmcblk0p12
179 13 4096 mmcblk0p13
179 14 4096 mmcblk0p14
179 15 462848 mmcblk0p15
179 16 1048576 mmcblk0p16
179 17 8192 mmcblk0p17
179 18 102400 mmcblk0p18
179 19 8192 mmcblk0p19
179 20 8192 mmcblk0p20
179 21 8192 mmcblk0p21
179 22 4096 mmcblk0p22
179 23 4096 mmcblk0p23
179 24 4096 mmcblk0p24/proc/mounts
# cat /proc/mounts
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/mmcblk0p15 /system ext4 ro,relatime,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p16 /data ext4 rw,nosuid,nodev,noatime,errors=panic,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p18 /cache ext4 rw,nosuid,nodev,noatime,errors=panic,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p20 /lgdrm ext4 rw,nosuid,nodev,relatime,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p21 /multimedia ext4 rw,nosuid,nodev,relatime,barrier=1,data=ordered 0 0
/dev/block/vold/179:33 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:33 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0/cache/recovery/last_log
# cat /cache/recovery/last_log
Starting recovery on Tue May 19 20:15:45 2020
framebuffer: fd 4 (320 x 720)
recovery filesystem table
=========================
0 /tmp ramdisk (null) (null)
1 /boot emmc /dev/block/mmcblk0p7 (null)
2 /cache ext4 /dev/block/mmcblk0p18 (null)
3 /data ext4 /dev/block/mmcblk0p16 (null)
4 /misc mtd misc (null)
5 /recovery emmc /dev/block/mmcblk0p17 (null)
6 /sdcard vfat /dev/block/mmcblk1p1 /dev/block/mmcblk1
7 /system ext4 /dev/block/mmcblk0p15 (null)
...Custom Recovery
WIP
Stock Recovery
Stock recovery mode performs a factory reset
Fastboot
To enter fastboot mode, reboot the bootloader from android or "charging mode"
$ adb reboot bootloader