You know what, forget this. Just follow these simple steps:
1. Hook up the reader to USB
2. Open Command Window in the directory where the update package is installed
3. Run:
ebook_msc um recovery
4. The reader should switch into the update mode (Updating Firmware Now...)
5. Run the
stock updater, have it update the firmware on your Reader
There is no reason to worry, it's very safe.