I was thinking that if I got an Xecuter HDXT, to replace my PS3 hard drive.
That gives an external ESATA port. I could then use one of these, which I already have.
The theory is that I could use more than 1 drive on the PS3. Use 1 with an updated 3.42 or whatever, and use 1 or more filled with games and 3.41 for use with a jailbreak dongle.
Also if I was using 3.5" drives I could use 1tb or larger drives.

That gives an external ESATA port. I could then use one of these, which I already have.

The theory is that I could use more than 1 drive on the PS3. Use 1 with an updated 3.42 or whatever, and use 1 or more filled with games and 3.41 for use with a jailbreak dongle.
Also if I was using 3.5" drives I could use 1tb or larger drives.