Why did you rename it?
Anyway, try this. Should work.
https://wiki.mobileread.com/wiki/Sony...g_Instructions
EDIT: Wait a second. I need to update the link in the wiki to the new Sony update. Will let you know when I changed it.
EDIT 2: Done! If you dare to try again read this article:
https://www.mobileread.com/forums/showthread.php?t=12573