Which firmware should I download for iPad 2 A1397?

I want to update an iPad 2, I've done this before but not with this model yet

The model is A1397, according to Apple warranty check is: iPad 2 3G (Verizon)

I want to download the file .ipsw directly from Apple server without using iTunes

Which version I download: iPad 2 (CDMA) or iPad 2 (GSM)?