4,1 to 5,1 firmware updaters - beware of 10.8.2 supplemental update!

Discussion in 'Mac Pro' started by avemestr, Oct 8, 2012.

  1. avemestr, Oct 8, 2012
    Last edited: Oct 10, 2012

    avemestr macrumors regular

    Aug 14, 2012
    Hi all,

    Plugged in a W3680 in a 4,1 today. Had to do the firmware update, of course, and that brougt me to the netkas forums.

    There was this thread: http://forum.netkas.org/index.php/topic,852.msg16072.html#msg16072

    It says: "IMPORTANT: If you have updated your 4.1 Mac Pro to a 5.1 using this utility, DO NOT install the Mac-OS 10.8.2 supplemental update. I just did and my machine refuses to boot."

    Can anyone confirm this problem? I don't dare upgrading the OS at the moment.

    UPDATE: A number of people (see below), including myself, have successfully installed the update without issue.
  2. beto2k7 macrumors 6502

    Jan 6, 2010
    OS does not have the ability to affect pre-OS functions (i.e. POST) in any machine. I might be wrong. I have a flashed macpro4,1 and have no trouble booting with supplemental update installed. YMMV tho.
  3. MindBender1972 macrumors newbie

    Oct 8, 2012
    I made that post and was surprised to find this warning here. I'm still trying to recover my machine, but I will report on that on the other forum.
    You're not wrong, but... Part of the update is an EFI and/or SMC update. Before I wrote the last part of my post on the other forum, I assumed this updater was written to EFI, so it could update itself at the next restart. Fortunately is was wrong.

    But the presence of an EFI updater on any of your drives seems to alter the startup process. For example, you won't be able to select another startup disk anymore, until the updater has executed and removed itself.

    I will keep you updated trough my original post.
  4. MindBender1972 macrumors newbie

    Oct 8, 2012
    There's no risk involved if you have a spare hard drive laying around: Just duplicate your current drive to the spare disk, remove the original and get your machine booting from the backup. Then do the update and you'll see if it still works. I would LOVE to know the results... I'd try myself, but I'm still restoring my machine.
  5. beto2k7 macrumors 6502

    Jan 6, 2010
    Back then when the efi tool came out I didn't use the one from MacEFIRom. I made my own. That's maybe why I don't have such an issue with my machine.
  6. saulinpa macrumors 6502a

    Jun 15, 2008
    Works fine on mine. What exactly is it supposed to break?
  7. Spacedust macrumors 6502a

    May 24, 2009
  8. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    10.8.2 working just fine on our 4,1 flashed to 5,1.

    The OP is wrong and should alter his post to stop scaring people.
  9. DPUser macrumors 6502a

    Jan 17, 2012
    In a post at Netkas, OP mentions his Mac's CPU is not one of those that comes stock with a 2010 MacPro...
  10. chiefroastbeef, Oct 8, 2012
    Last edited: Oct 8, 2012

    chiefroastbeef macrumors 6502a

    May 26, 2008
    Dallas, Texas/ Hong Kong
    I'm scared to update now... I will make a fresh backup before I do so.

    Hope you get it figured out.
  11. xav8tor macrumors 6502a

    Mar 30, 2011
    Been running 10.8.2 since beta on 4.1 to 5.1 flashed Pro with 3540 replaced by 3690. No issues whatsoever. Sounds like operator error. If anything, performance is improved, and with new Nvidia driver for the GTX 6XX, even more so. As always, back up first, but I did it, and would do so again without hesitation. If his issue was related to a GTX card, then yeah, don't update the OS until Nvidia updates the GPU driver.
  12. mlyon macrumors member

    Mar 19, 2009
  13. matthewtoney macrumors regular


    Aug 17, 2009
    Charlotte, NC
    Ditto - W3690 in mine flashed to 5.1 and the 10.8.2 supplemental went fine for me too.
  14. beto2k7 macrumors 6502

    Jan 6, 2010
  15. K6-III macrumors newbie

    Dec 11, 2010
    Toronto, Canada
    Works fine on my 4.1 flashed to 5.1 upgraded to i7 980x.

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