Leapster Explorer: Common Commands

Here are some changes to the LX's default setup that will make your life more easy.

Touching Things

Main App

I hate having the main app timeout and power down when. simply type:

touch /flags/main_app

to disable the main app on next start

You can also supply the name of an alternate main app like so:

echo /LF/djsm/djsm-start > /flags/main_app

Just note that /LF/Bulk isn't guaranteed to be mounted yet.

If your app isn't found, rcS will remove /flags/main_app to restore the default on the next boot.

Developer Mode

This turns on telnet and ftp by default, and switches to a static IP address.

touch /flags/developer

If you still want to have the automatic private ip:

touch /flags/avahi

And if you want a speedy boot (this eliminates a 6 second wait timer):

touch /flags/no8sec

Removing USB mode auto-shutdown

When USB booting, the script /usr/bin/recovery runs. On line 8 of that script is an instruction to do a forced shutdown after 600 seconds.

To remove that annoyance, simply comment-out that line:

#( sleep 600; poweroff -f ) &

Debranding

To remove the 2nd boot logo, comment out line 76 of /etc/init.d/rcS:

#imager /dev/layer0 /var/screens/LEGAL.png

To remove the startup sound, comment out line 91 of /etc/init.d/rcS:

#oss -w /var/sounds/startup.wav & # & tim end "sounds/startup.wav" &

SFTP and You

SFTP is one of the easiest ways to copy files over to your Explorer.

Configure your Explorer

Now that sshd is enabled to start on boot up automaticly we need to make a few changes to the sshd config

cd /etc/ssh
vi sshd_config

Now uncomment the fallowing and change them to yes

PermitEmptyPasswords yes
PermitRootLogin yes

Once done editing, hit the ESC key, then type :x to save and exit.

now you are ready to start sshd for the first time and generate a key, type:

/etc/init.d/sshd start

This may take a minute or two for the key to be generated so sit back and relax.

To enable SSH and SFTP permanently, you will have to carefully modify /etc/init.d/rcS. Add the following line in the same location as the telnetd and vsftpd startup (~line 138), or optionally outside the check for /flags/developer (~line 136):

/etc/init.d/sshd start; ### tim done "sshd"

and optionally disable telnetd and vsftpd by adding a # before the first slash.

#/etc/init.d/telnetd start; ### tim done "telnetd"
#/etc/init.d/vsftpd start; ### tim done "vsftpd"

Connect With your Linux Box

Ubuntu

Aquire FileZilla

Right click your network icon thingy and configure your interface

Setting it to link only will prevent the Explorer from disconnecting randomly when you plug it in.

on your explorer run

ifconfig

to see what it's ip address is. Enter that address as the host in FileZilla and set the username as: root

Congrats you now have sftp access to your explorer :)

New Kernel Copy

This may brick your Explorer and make it require a usb boot so only do this if your brave.

nandscrub -e /dev/mtd2
nandscrub /dev/mtd2
nandwrite /dev/mtd2 /usr/kernel.cbf

mtd2 is where the kernel is stored