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Rimmsi

macrumors regular
Original poster
Jun 19, 2021
199
68
Czech Republic
Hi, I have an MBP 15 "mid 2014. After upgrading to Big Sur I found that the processor could not be undervolted, it is caused by the last firmware .431 that was installed together with Big Sur. Is there a way to downgrade to Catalina or older firmware? Thank you .
 

Rimmsi

macrumors regular
Original poster
Jun 19, 2021
199
68
Czech Republic
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