1. Complete system restore in iTunes
2. Booted up the AppleTV to the language select screen
3. Pull the power and connected USB again
4. Backuped SHSH blobs using TinyUmbrella
5. Opened GreenPois0n, selected yes for ATV
6. Plugged in USB - waited for device discovery (ATV light flashing)
7. Plugged in power - waited for flash pattern to change (about 3 sec)
8. Held Menu/Play for about 7 sec (flash pattern changed again)
9. Started the process in GP
10. Once GP was finished and the Quit button appeared...I went and made a cup of coffee without touching ANYTHING! (Made sure the delayed writes were finished)
11. Pressed Quit in GP
12. Unplugged power and USB
13. Connected power and HDMI
14. Set language and WiFi
15. Choose "Install Software" under GreenPois0n menu option
16. Pressed "Menu" to reboot when asked
17. Once rebooted, tested SSH with PuTTy, SSH Secure Shell Client, WinSCP