download the new version for ipod Modern CSV 2.0.2

Sorry I can't be more help, but if the Classic's software is still available to download, I don't know where it is. On my iPod for example, if I added a 256GB SSD, the iPod would only ever be able to address 128GB of that memory, no matter what I do. * Regarding the SSD you have installed into your iPod, you should with consult the supplier who provided the SSD, because there are limitations on how much of the memory can be addressed by the software and that's not something that Apple even thinks about since it's not their upgrade. (On the iPod Touch, the different iOS versions reflect changes to the way the iPod works and different hardware, depending on which version of iOS is being discussed.)

Certainly, my iPod had no updates for many years and as far as I'm aware the difference between the software versions 2.0.1 and later is due to different hardware within the device. However, regardless of whether yours has 2.0.4 or 2.0.5 as far as I know, there is no upgrade to the software available (but see the next paragraph*). I believe that 2.0.1 was the last available software for the 120GB iPod Classic.

The Wikipedia article for the Classic mentions only 2.0.5. To my knowledge, the last iPod Classic model (6th generation, 2nd revision, also knows as 7th generation) was originally shipped with 2.0.2, and there was an update to 2.0.3. The Classic's software is known as 1.1.2 PC (well, mine is)

Download the new version for ipod Modern CSV 2.0.2