Need help installing 4.70 firmware to NSA320

Thanks to your help, I'm now able to revive my NSA320!

For the benefit of others who might ran into the same situation as me, I've outlined what I did:
1. Did a factory reset of the NAS
2. Used rescue stick image containing 4.50 firmware to boot the NAS
3. Using the web interface, I upgraded the firmware to 4.70, which I downloaded from Softpedia
4. After the firmware upgrade, I created a fresh volume using the web interface
5. Using a FTP client, downloaded the 4.70 packages
6. Copied the packages to the admin \ zy-pkgs folder share

From then on, I'm able to configure the NAS and install packages.