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triffdog

macrumors newbie
Original poster
Oct 30, 2018
3
0
UK
I have Macbook Pro late 2013. I installed High Sierra and immediately the battery started to drain, visibly, by the minute. After ten minutes it had lost 20% of its charge.

I took to it the Apple genius bar and they told me that the problem was the battery and I would have to buy replacement. My battery was showing only 300 cycles and was perfectly fine before the OS upgrade.

After much prodding the Apple genius also told me was that when you upgrade to High Sierra you also get a firmware update which can affect how your hardware operates and performs, particularly the older Macbooks.

So is the new firmware the cause of the battery problems?

While you may be able to retro-install older OS software to avoid the High Sierra glitches, you cannot re-install the older firmware so you're stuck.

Are apple deliberately designing the firmware upgrades to make the older machines obsolete or certainly less functional.
 
I have updated my late 2013 13" Pro to Sierra, High Sierra, and Mojave with no change in battery drain. The bootrom was updated with each OS upgrade.

I did the same with a mid-2013 13" Air and two early 2015 Airs.
 
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