Thanks for your very detailed description. Finally I thought I got it to work, but unfortunately, i don't ;=(
First I tried an Ubuntu-Live-CD: don't found the drives on PC
Next attempt Knoppix-Live CD: found the drives on PC, but don't found (or showed) the *.IMG image-files
Next attempt ext2fsd program: works with drives, but not with images
Finally I used the very simple way to extract the apk-file from the images with the free portable version of "explore2fsPE" which can be found here: http://sourceforge.net/projects/explore2fspe/
As a basis I took the images which can be found in "porkupan_sdcard-rescue.zip" from the Tweaks-Post here: https://wiki.mobileread.com/wiki/PRST...C_sd_rescue.29
Maybe I made a mistake with the copying of the framework-res.apk-file but as a result the display just flicker without any possibilty to do anything on it. So my next step is the SD-Card-Recovery with the hope to get it repaired.
Thanks anyway and best regards