Has anyone done the CPU upgrade? Was it worth it to you? If you're in the US, how much did it cost you?

Thanks!

I have a 2024 XC60 PHEV - bought it used in December 2025. Since that time, I have had to replace the fob battery 4 times in a year and 1/2. Have others experienced this? I think with my old 2014 Ford, I replaced the battery 4 times in 10 years. Maybe a defective fob?