There are at least 2 good versions of the Ermine OS for your Pocket eDGe.
Here's a link to the official version:
http://www.ethanphoenix.com/entourag...Pocket%20eDGe/ (It looks like that link still works.) Instructions for this install:
http://www.ethanphoenix.com/entourag...%20(BETA!).pdf
Here's a link to the newest unofficial version which can include the Google Android market:
https://www.mobileread.com/forums/sho...d.php?t=159872 You will want to read the instructions carefully before installing.
Hope this helps!!
Edit: Obsessed2 has written a very good and comprehensive introduction to using the Pocket eDGe (and full-sized, too!

) which includes links and instructions for updating:
https://www.mobileread.com/forums/sho...d.php?t=132878