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EFI Firmware Update fails - No Boot or POST afterward

post #1 of 4
Thread Starter 
Hi Community,

I have a Mac Pro Model A1186 - EMC:2113
2.0QX / 2X512 / 7300GT / 250 / SD / INT

I ran several updates automatically from the OS including the SMC.
After several successful reboots, the systems performs the EFI update.
I am presented with a window asking to reboot while maintaining the Power button depressed until the White LED flashes fast or until I ear a long Beep, which I did.

The system started, the DVD drive Opened its drawer, and then nothing more.
I waited for a few minutes before I decided to turn off the Mac with a long press on the power button.
From then, the computer no longer boots. It just turns on and nothing happens.

The machine was running a genuine version of Mac OSX and was updated through the standard Built in Update program.

Could anyone provide me with help to revert this upgrade to its previous state or to reload what could be reloaded, though this looks like a challenge as there is no more sign of activity from the MoBo...

Please help !!

Thank you for any possible assistance with this matter.
Chris

btw, Not sure about OSx version running, probably the original.
post #2 of 4
Try doing a PRAM and another SMC reset.

For PRAM - CMD + Opt + P + R
Do this immediately after the chime. Press and hold those keys till the system reboots.

For the SMC, do the same thing as you had done before. Completely turn off the system, then press and hold the power button till the light flashes rapidly and it beeps.

One other things you can also do after those above steps is just taking out a single stick of ram. That will change the hash of the system and should force it to boot. Could also be possible the EFI firmware is messed up on the system now. However, if you didn't get a grey loading bar, then I doubt this is the case.

Have you attempted trying to boot the system from another mac via a target disk mode?
 
Gsvlip Dudyrm
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Oda'maksv
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Gsvlip Dudyrm
(15 items)
 
Oda'maksv
(9 items)
 
CPUMotherboardGraphicsRAM
3770k @ 4.5 1.312 load Zotac Z77 ITX Wifi GTX 1070 Gaming 2126/2249 w/ Hybrid cooler TridentX 16GB 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
OSMonitorKeyboardPower
Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
AudioAudio
JDS Labs Objective 2 JDS Labs ODAC 
CPUMotherboardGraphicsRAM
Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
Mouse PadOther
Apple Keyboard Xbox One controler 
CPURAMHard DriveHard Drive
C2D 2,26GHz under volted @ .978v 8GB  Crucial M4 64GB SSD 500GB Scorpio Black 
OSMonitorKeyboardMouse
OS X 10.0 1280x800 Built-in Trackpad 
Audio
Built-in 
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post #3 of 4
Thread Starter 
Hi Lord,

Thank you for you suggestion.
Unfortunately, the MoBo does not boot up to that stage, therefore, keys combinations are not possible.

Further, I conducted some tests with the Diag button on the MoBo
LED 8 does not lit, meaning that the EFI does not load.
LED 6 indicate that GPU is present, even though it is removed prior to turning the Power On.
All other LED indication are ok (as per the service manual)

I did reset the SMC (SMC reset button)
I did the Sys Reset on the MB
Removed one of the 2 RAM Risers prior to powering On
Tried again Long press on the Power ON button

...and still no reaction. The power turns on and that's it.
post #4 of 4
Thread Starter 
btw, I was stupid enough to believe that I should allow all the updates to complete...
I was just willing to get the machine up to date. Not concerned about migrating OSX to the latest up to date level/version.
I would have though that the updates were well regulated/controlled by the built-in update process.
I wish I knew, there might be issues by updating the machine.
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