From: "Jim Curtis" Received: from sonic317-41.consmr.mail.ne1.yahoo.com ([66.163.184.52] verified) by media-motion.tv (CommuniGate Pro SMTP 6.1.0) with ESMTP id 6469089 for AE-List@media-motion.tv; Sat, 23 Jun 2018 04:12:53 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flash.net; s=s2048; t=1529720440; bh=mKXpScWEAQo9c1GinVVa4C0St1r5fdW2AUiOqyCvuqs=; h=From:Subject:Date:References:To:In-Reply-To:From:Subject; b=UkDY2WmHzhFLlpPpMx8U1Zi6xmrIrJW3rsK4ngIM29yyo9s6UQiXHt9a1umpnxEJWZcjGgBJ7QV13e9T2ihkiT3K3V0yH8pi4K9CpXoQn8MzH74eitdLz6aCs2EOaU3eR49BU7c6lrmpI4HyYGtbC13kPN1T0xKdZiNvFR9yLh50yi31Q/98MXOapz3NWymRSMndkCijqf5f1fxzKPKze4tbpgDGq9eYWrTqqmDwSYD00V0MGePFbtf41gCVlj3VNDjh+ecOtnTMldNDk7iZ8SYfE9gAjUWx20e/9SQuNtbECli/+oBmCmpEU95uGQTrMGo6oIF8SNqPC5osL1ANMA== X-YMail-OSG: Ijis4ggVM1kBZcdwgPYf_YifQ7J1SPROWyf7cPZabxkpjzSf9RaTU73fwkuCJdB vB.QwZKabgDRLItasiRCbfuQ6x2LoMA54Yx3_6ZTPTSzGq77qXOOkbrlXSDr_y8dmuq7eJ5CwDTy BHHy38ODbU.fokbMEpR53J9ExemgdE6FpEwtKmg77vlbQFeNS3OZ6qx7TlhmPSSvuk9i.0.VA0eS NsCkKHtkKIOdPOUyjbYPiJclQcNCE0pBul6pIIQ5lfr0SrHBtIqlUUijH.CoRh.CPHy9esRwwi3i 6BgEyZ8VyzfjiTCyCb8V4YBku9f5xMs0LBr_EkBYE4b2.D3xMAtIqtW3aS8KzPUcdH_e0YW0Tc_F SWHaB2WVlY1KJPi39Z9N2KBtuq9zwds53yg4FpmxcIGxxMikotr3WIhZ2HsT7zMY2GXcVHjjKbBY fe_ASSNF16zfEfvjBwWlQBkCwh3jea6Crf_lMijD2GplAwNa5cixHYd2ccK.lWVCsVLGtBk6RV4P gfoYttcmQyekw9oFa0Pocuql_.v3Hof5w6pioqsUZ71XiBg5Wwcb8Eqq1kA.IRmwqD4.LNyE.wk_ 6rNZb9NnlgIRr8B2LRBnDQMHAZeEzhR.zqpVVB8q5FYrd_Dyahj_SfljAHwAOQB3ghnKylI8yVjx clBAAPbDN_O9hb3sVYmm4ThfJsGa_FiT1TU_Xm0OVxEjz_Vk9wEv45vxr7yd7zg32x1vwpeHpG.n i7hUFAwTBJxwHd1ON0k4fwdjEDb9qpj_bPzutxN_kwnf9w0T_2wyV_LbfItOzVVZ9wD8E4bpND4W 9TF3.tqqFsb2ped8.Wf4YHgr92Pctec8hpBsudIy_fuRoiVjzPaXXX7Iq24.kWECWv_S1UfbWZzV 8OTiAK_1iCtEhOUlFv9OVxMwmFBJ1sM20aHhycG5ceM3sVzH_gr9TNMF0xFmItkxDGtiIMzugXYM AAEOcLs9XuPvlgi6bUJUQU1qLqJ0- Received: from sonic.gate.mail.ne1.yahoo.com by sonic317.consmr.mail.ne1.yahoo.com with HTTP; Sat, 23 Jun 2018 02:20:40 +0000 Received: from 104-48-143-159.lightspeed.rcsntx.sbcglobal.net (EHLO jims-mac-pro.attlocal.net) ([104.48.143.159]) by smtp425.mail.ne1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 670319b47e7c9cff8bdb186c0fb0e0d0 for ; Sat, 23 Jun 2018 02:20:35 +0000 (UTC) Content-Type: multipart/alternative; boundary="Apple-Mail=_BCCF740A-AE37-4A14-8C3A-1884EC872ECB" Message-Id: <4C1985F7-641D-4350-9B48-CF5C5075A8B9@flash.net> Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: High Sierra MacPro Firmware update Q Date: Fri, 22 Jun 2018 21:20:34 -0500 References: To: After Effects Mail List In-Reply-To: X-Mailer: Apple Mail (2.3124) --Apple-Mail=_BCCF740A-AE37-4A14-8C3A-1884EC872ECB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 I have a MacPro5,1 - the last cheese grater model, and I=E2=80=99d like = to install High Sierra on a partition that also has El Capitan on it so = that I can convert FCPX projects to XML so I can finish projects started = in FCPX in Pr and Ae, and work on them on El Capitan, which is working = great. When I started to install High Sierra on my Sierra partition, the = installer told me I need to update the firmware. I bailed. My question is:=20 If I update the firmware, will it bork my MacPro5,1 so that it will no = longer boot from El Capitan? I=E2=80=99ve searched for an answer, and most people seem to throw fate = to the wind and commit to High Sierra forever. I=E2=80=99m not that = guy. Can anybody help, or direct me to some info? =20 Thanks, Jim C.=20= --Apple-Mail=_BCCF740A-AE37-4A14-8C3A-1884EC872ECB Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 I have a MacPro5,1 - the last cheese grater = model, and I=E2=80=99d like to install High Sierra on a partition that = also has El Capitan on it so that I can convert FCPX projects to XML so = I can finish projects started in FCPX in Pr and Ae, and work on them on = El Capitan, which is working great.

When I started to install High Sierra = on my Sierra partition, the installer told me I need to update the = firmware. I bailed.

My question is:

If I update the firmware, will it bork = my MacPro5,1 so that it will no longer boot from El Capitan?

I=E2=80=99ve searched = for an answer, and most people seem to throw fate to the wind and commit = to High Sierra forever. I=E2=80=99m not that guy.

Can anybody help, or = direct me to some info?

Thanks,

Jim = C.

= --Apple-Mail=_BCCF740A-AE37-4A14-8C3A-1884EC872ECB--