To quote: "That "PS3" logo startup is on 3.00 regardless if you have a slim or phat PS3. verified phat PS3s use new "PS3" logo as on slims."
PS3 Firmware 3.0 Changelog:
• Multi-Audio - Audio can now be output to multiple connectors simultaneously. You can set this option under [Settings] > [Sound Settings] > [Audio Multi Output].
• Video Content Playback - During Video content playback, you can now use the right stick to play content in slow playback, fast reverse, and fast forward.
• Settings Descriptions - Now below each setting option under...