In this guide it is assumed that one has android tools, such as adb and fastboot installed, also Linux is assumed but it should work also on windows with minor modifications.
The phone used was unlocked/rooted before I tried this, so that might also be required for following these instructions.
First thing is to download all the needed files.
mkdir -p /tmp/gt-i9250/
Then push the rootfs image to the nexus.
# Create directory from which ramdisk reads the images during boot.
adb shell mkdir /sdcard/rootfs-images/
# Push image to the device adb push nemo-handset-armv7l-gt-i9250.img.bz2 /sdcard/rootfs-images/
# Lets uncompress the image before using it.
adb shell bzip2 -d /sdcard/rootfs-images/nemo-handset-armv7l-gt-i9250.img.bz2
sudo -i fastboot boot /tmp/gt-i9250/vmlinuz-3.0.8-12.1.Mer-gt-i9250 /tmp/gt-i9250/mer-ramdisk.cpio.gz
After this the device should boot to the MTF based UX home screen.
- USB serial "jig" works, with the right cable.
- Touchscreen works
- Xorg starts with standard fbdev (no 3D acceleration)
- Applications do not start as the -software flag isn't forwarded properly
- No window manager / application switcher (requires 3D)
- No 3D acceleration
- No USB networking
- No WLAN
- No Bluetooth
Happy hacking everyone.