riffruff

I am wanting to upgrade my Z2 to a Z3, and was wondering if it would be possible to revert back to a Z2. I read in another topic that a person was able to go from Z1 to Z2, and then back to Z1 without problems, however, they didn't state anything about the firmware being reverted to the Z1 again. If I want to revert from the Z3 firmware, back to my original Z2 firmware, will that be possible? I wonder because if something goes wrong with the unit after upgrading to the Z3, I'd like to revert back to the Z2.

Are there any limits for the hard drive size? I read somewhere about a person buying a 160 gb drive, and it didn't work...(The unit reporting invalid hard drive or something). They didn't specify if it was a Toshiba or not...

I'm wanting to upgrade my hard drive in the z3 to a 7200 RPM for faster bootup... I read that you can only use Toshiba drives -- but I have been unable to find a 7200 rpm Toshiba PATA drive... Is there additional work to get a drive, such as a Seagate, to work? I prefer Seagate drives, and was wondering if anyone knew why they wouldn't work, or if they will work. Also, if anyone knows about a compatible 7200 Toshiba drive that I'm somehow unable to find...That would be great!