You just have to SSH into the kindle (e.g. with the USBnet-methode) and then create a RUNME.sh in the /mnt/us with the following content:
if [ ! -f /var/local/adunits.bkp ]; then
mv /var/local/adunits /var/local/adunits.bkp
Save, exit and make the following:
chmod +x /mnt/us/RUNME.sh; mntroot rw
Make a backup about the mntus.params file with this:
cp /var/local/system/mntus.params /var/local/system/mntus.params.BKP
Extend the original mntus.params with the followings:
if [ -e /mnt/us/RUNME.sh ]; then
If you would like to see a log then change the "sh /mnt/us/RUNME.sh" with "sh /mnt/us/RUNME.sh > /mnt/us/RUNME.log"
If you are ready, just create and link the screensaver folder, just like before:
mount /dev/mmcblk0p1 /mnt/base-mmc
mv /mnt/base-mmc/opt/amazon/screen_saver/600x800 /mnt/base-mmc/opt/amazon/screen_saver/600x800.bkp
ln -sfn /mnt/us/screensaver /mnt/base-mmc/opt/amazon/screen_saver/600x800
As far as I know this is the only black/hack
way and there's no "block the ads" and "put screensavers" hack.
I tried it on my own K4 NT SO, works.