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now im running MacOS catalina in the MBP mid 2012 and i have an old boot ROM version but when im going to update it says that a i need MacOS 10.9.5 so what can i do?Also the SMC version has the last one updated, so why is this updated but the rom no?
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I guess I’m confused here? Boot ROM Version: 233.0.0.0.0 is the correct one for your system. It offers the needed update for APFS boot up.
I have a 2012 15” and my SMC Version is: 2.1f175
As far as SMC and NVRAM resets: I rarely need to do either. So unless you can expand on what you are encountering I suspect you are not addressing the real issue here.
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@danj i check the apple support website About EFI and SMC firmware updates for Intel-based Mac computers. and it says my mbp 13 mid 2012 (9,2) should have this ROM version:MBP91.00D3.B0C and the mine says 233.0.0.0.0 , so you are saying those versions are the same?
@sebasg - The TN you found is old! Apple no longer maintains the firmware listing! Since introducing Gatekeeper Apple is constantly upgrading the systems firmware with updated signature files.
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How have you updated your system over the years? Have you been upgrading each OS release in turn?
Also what is your current drive a HDD or SSD?
из Dan
yes i have been upgrading but when swap to the ssd I install clean Mojave and then update to catalina and im currently using an ssd
the boot rom version that i have is 233.0.0.0.0
also, is necessary to do the SMC and nvram reset even when i have no issue?
из Sebas G