# This root was possible by the generous donations to the vacuum robot buying fund
# Especially I want to thank Vtel (https://github.com/zvldz) for his donation

# WARNING: there are reports that devices might have issues after the battery is removed.
# Before you proceed with the disassembly, check if you device is still operating correctly
# after you removed and reattached the battery.

# go to dustbuilder.dontvaccum.me and generate a firmware for your robot
# for S5 Max: https://dustbuilder.dontvacuum.me/_s5e.html
# for S6 Pure: https://dustbuilder.dontvacuum.me/_a08.html
# for S4 Max: https://dustbuilder.dontvacuum.me/_a19.html
# ^^^ DO THIS FIRST, as the shell below will timeout at some point

# connect uart to the robot (115200 baud, no flow control)
# power on the robot while pressing the "s" key. you should get into the uboot shell ("sunxi#") 
# you need to press the power button for 3 seconds for the device to power up

# force to boot system B
setenv boot_fs b
setenv nand_root /dev/nandf
setenv setargs_nand ${setargs_nand} init=/bin/sh
boot

# disable watchdog after linux is booted (you have 7 seconds)
echo 'V' > /dev/watchdog

# start required system services
mount -n -t proc none /proc 
mount -n -t tmpfs none /run
mkdir -p /run/shm
mount -n -t tmpfs tmpfs /var -o size=30m
mkdir -p /var/tmp /var/log /var/modules /var/lib/misc/ /var/lib/dhcp
ln -s /run /var/run
mkdir -p /dev/pts
mount -n -t devpts none /dev/pts
mount -n -t sysfs none /sys
ln -s /run/shm /dev/shm
echo /sbin/mdev > /proc/sys/kernel/hotplug
mdev -s
/etc/init/S01logging start
/etc/init/S02hostname start
/etc/init/S02network start
/etc/init/S02rrboot start
/etc/init/S03mountall start

# change SSID and password, skip this if your robot was already connected to your wifi before
# Hint: This WiFi needs to have an Internet connection.
echo ssid=\"your WiFi SSID here\" > /mnt/data/miio/wifi.conf
echo psk=\"your WiFi password here\" >> /mnt/data/miio/wifi.conf
echo key_mgmt=\"WPA\" >> /mnt/data/miio/wifi.conf
echo uid=0 >> /mnt/data/miio/wifi.conf
echo region=us >> /mnt/data/miio/wifi.conf
echo cfg_by=miot >> /mnt/data/miio/wifi.conf
echo 0 > /mnt/data/miio/device.uid
echo "us" > /mnt/data/miio/device.country

# this connects the robot to the wifi
/opt/rockrobo/wlan/wifi_start.sh

# cleanup log files
rm -rf /mnt/data/rockrobo/rrlog

mkdir /mnt/data/backups
cd /mnt/data/backups
dd if=/dev/nanda | gzip -9 > nanda.dd.gz
dd if=/dev/nandb | gzip -9 > nandb.dd.gz
dd if=/dev/nandk | gzip -9 > nandk.dd.gz
cd /mnt/data/backups
tar -czvf robot-backup.tar.gz *.gz
rm *.dd.gz

# Don't forget to also scp this backup to somewhere safe asap
# It might be your only hope to recover your robot if something goes wrong in the future
# If SCP don't work through the missing /usr/bin/ssh try to copy the backup over netcat
# On linux pc:
netcat -l -p 60242 > robot-backup.tar.gz
# On robot and be patient:
nc 192.168.X.X 60242 < robot-backup.tar.gz

# Click on the link in the dustbuilder email, and select start_server.php
# Don't download it. Click on it instead and a netcat-server will start on the dontvacuum.me server.
# Copy the command line which is displayed and execute it on the robot
# e.g. nc builder.dontvacuum.me $port | dd of=/mnt/data/update.tar.gz

cd /mnt/data/
tar -xzvf update.tar.gz
md5sum -c firmware.md5sum
# DO NOT PROCEED IF YOU DID NOT GET "OK" FOR BOTH FILES!!
# Write firmware for system A
dd if=boot.img of=/dev/nandc
dd if=rootfs.img of=/dev/nande

# power off the robot

# force to boot system A
setenv boot_fs a
setenv nand_root /dev/nande
setenv setargs_nand ${setargs_nand}
boot

# if update was successful, you should be able to SSH into the robot (user:root)
# after SSH, update system B
# !! DO NOT PROCEED IF THE SYSTEM SEEMS UNSTABLE OR REBOOTS !!
cd /mnt/data/
dd if=rootfs.img of=/dev/nandf

# check that you have 35Mbyte free on /mnt/data
df -h 

# this step activates valetudo
cd /mnt/data/
wget https://github.com/Hypfer/Valetudo/releases/download/2021.04.0/valetudo-armv7-lowmem -O valetudo
chmod +x valetudo
cp /root/_root.sh.tpl /mnt/reserve/_root.sh
chmod +x /mnt/reserve/_root.sh