[CentOS] (off-topic)Update sii-3512A serial ata controller - which flash memory?

Hi.

I had to update the BIOS of a Silicon Image 3512A Serial ATA controller. 
I'm not using RAID.

When I run the updater program (updflash.exe), it asks me to choose 
flash memory from a list, something like: AMD Am29F010B (1 Megabit), AMD 
Am29LV01B (1 Megabit), etc.

How can I find out which is flash memory of the controller?

Thanks

Marcelo