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Your PS3 is still on 3.55 kmeaw but it's spoofed to 4.25. No need to disable the spoof, it's better to keep it to prevent accidental FW updates. It's actually even better to install the 4.31 spoof. And what would be even better is to enable QA and install Rebug 4.30.1.

No need to install Rebug 3.55.4 to enable QA, just download Toggle QA from the Rebug website and run it on kmeaw. Then Make a NOR/Nand dump using multiMAN and install Rebug 4.30.1 from XMB. Make sure you also update you multiMAN to the latest version because versions older that 4.17.03 are not compatible with Rebug 4.30.1

Good luck!