BTW a Apple iMac "Core i5" 2.8 21.5-Inch (Late 2015) benches at 11342

More planned obsolescence by Apple.

macOS Sierra hardware compatibility list (no longer supported):

• Late 2009 and later
  • MacBook
  • iMac
• 2010 and later
  • MacBook Air
  • MacBook Pro
  • Mac mini
  • Mac Pro

Anyway:

I have read that all I need to do is update the firmware from 4,1 to 5,1 and I will be fine.

http://forum.netkas.org/index.php/topic,...

Downloaded the update but I get Error 5570 when tying to run it.

A web search says I need to run Apples EFI Mac Pro firmware 1,5.

https://support.apple.com/kb/DL1321?loca...

But it will only install on the 2010.

I know we are going to have a lot of questions on Sierra when it hits next week and I would really like to be able to learn the system.@danj I hope you might be able to help.

UPDATE 9/15/16

I got by the 5570 error code by opening the MacProEFIUpdate dmg but not running it.

Then running the MacPro 2009-2010 Firmware tool ( ran OK without getting the error).

Said to shut down and restart holding down the power button until it started flashing.

I did this a couple of times. It looked like it was going to work but I did not get a firmware progress bar, it just booted normally. And I still have Boot ROM Version: MP41.0081.B07. The problem is the same as stated here:

http://forums.macrumors.com/threads/anot...

Mine is at the B07, so the EFI updater should work but still will not.

FURTHER UPDATE

Tried it three times and failed. Booted from a clean system on an external drive and success. Now have Boot ROM Version: MP51.007F.B03

I do not get the error message when trying to download the macOS Sierra Master Beta, it's just doesn't download.

UPDATE 9/20/16

Installed Sierra on external drive and booted from it on the MacPro. All appears to be running well, just one incompatible software and that was Symantec Endpoint Protection. Will play with it this way for a few days to see if there are any other issues but it's really starting to look like Apple just wanted to make the machine obsolete prematurely.

UPDATE 9/29/16

After testing for a few days using an external with Sierra and finding no problems, I went ahead and installed without issue on my MacPro. Using a Logitech QuickCam Vision Pro Webcam w/ Mic camera and microphone. The camera does not do well in low light and is not near the quality of an iSight. Siri runs fine with it and I can now send messages verbally to anyone in my address book.

I will be trying an install on a 64 bit early 2009 MacBook Pro this weekend.

update

2009 would not boot from external Sierra drive. Circle with bar.

UPDATE 10/5/17

This MacPro is now running 10.13 High Sierra with no problems.

⟐ Commented 3월 16, 2023 at 7:18 GMT-7

• PFM006 - There may be an issue with the System Management Controller (SMC)

• PPM001 - There may be an issue with the power management system

The mac powers on fine, but is extremely slow. The SSD is cleared so no software is installed, running from Big Sur from an USB is also really slow.

I’ve opened up the machine and there was a lot of dust. Cleaned out a lot and have put it back together. No change. The water indicators I’ve seen on the boards are not red, hence there is no liquid damage from what I can see. Nor can I see anything weird on the open sides of the boards.

I’ve also done the SMC reset, didn’t help either.

I got the 6 core D500 model with 16gb ram. It also has some HDMI issues from time to time, having the screen flicker (like it’s not getting a propper connection); however using thunderbolt > HDMI works fine.

Does anybody know what I can do to resolve this issue? Do I need to replace the backpanel/PSU, or is there another issue which I can look at?

⟐ Answer edited 8월 25, 2025 at 10:08 GMT-7

⟐ Commented 9월 16, 2025 at 12:01 GMT-7

I've made a video so you can see the problem yourself. The ASP was unable to locate the problem.

Mac pro won't boot up.

http://www.youtube.com/watch?v=uq2LHDMFm...

⟐ Commented 3월 07, 2021 at 3:54 GMT-7

⟐ Commented 2월 24, 2026 at 12:32 GMT-7

I hope to have some advice about my situation with my Mac Pro 1.1..

I'm little late I know but only in these days I have had the change to upgrade my Mac.

I'm an expert user and have repaired, tweaked, hacked a lot of devices so for me Apple hardware and software are thing that i'm deal with almost every day.

This time I have decide to take time to upgrade my old:

Mac Pro 1.1 (2006)

The upgrade plan was:

- Max Ram 32Gb

- Ssd Boot HD

- Airport Extreme Card

- Mac OS X 10.9.5 with TIAMO Boot (SFOTT)

- Ati Radeon 5770 HD 1Gb (Original Apple not flashed from Pc hardware)

- Netkas 2.1 Firmware Update (since I need to upgrade CPUs for have more computing power)

I have done all of these upgrades successfully without any problems till the CPUs swap..

I have choose to upgrade my Mac Pro with a matched pair of Xeon X5365 (I've already successfully done this kind of operation a lot of times).

After I complete the CPUs swap and bring back all the inside of the Mac Pro (cleaned everything), I also changed the Logic Board Battery,

when were time to turn on, the Mac was "working" but NO CHIME and black screen.

This was the exactly sequence of events:

1) Before proceed to turn on the Mac I have reset the SMC with his own button on the Logic Board for 5 seconds

2) closed the case and attached back the AC plug

3) the Mac immediately turn on WITHOUT pressing the POWER BUTTON (light on the power button is on and stable)

4) Dvd drive turn on, front and rear fan spin normally and the HD drives other than the SSD Boot, spin.

5) No Chime - No Boot - no chance to use keyboard for a NVR reset

Checked immediately the DIAG_LED button:

Led 1 - Trickle Pwr ON

Led 6 - GPU Present ON

Led 7 - Power On ON

Led 8 - EFI Done OFF WHILE SHOUD BE ON (as stated in the Apple Service Manual) Indicates: EFI is done loading

I have try to reset again the SMC and change again the Logic Board Battery but nothing, the Mac start up but NO CHIME.

Swapped out the GPU, no chime, same with the Ram dims, I have try to pull out every dims and leave only 2 in the upper riser althought the memory riser diagnostic leds are all OFF (so no faulty dimms). Also removed Airport Card.

For test purpose I also have try to swap back the old CPUs but the things remain the same; NO CHIME, NO BOOT.

What lead me here before buy a new logic board or power supply is the LED 8 from the DIAGNOSTIC LEDs.

On every post I have find googling around NO ONE ever report the behave of the Led 8 in they'r Mac Pro:

LED 8 - EFI DONE - In my case OFF while as stated in the Apple Service Manual, should be ON.

also notice that Led 6 - GPU Present in my case the light is ON also if the GPU card is pulled out, strange uh?

Could someone here please help me to understand better what's happen to my Mac Pro?

The only other clue I can provide about a strange behave of my Mac before the upgrade is that from about a year ago after I have installed the ATI RADEON 5770 HD Instead of his standard GPU, when I hit the POWER BUTTON, before to hear the CHIME I had to what 5-10 seconds and after the Netkas 2.1 Firmware Update the time to have the CHIME was the same.

This delay of the chime sound could be related with the LED 8 EFI DONE OFF?

I also have try to PUSH the Power Button for 10 seconds for check if I eventually could be able to restore the original EFI but doesn't work, the light of the power button remain ON and don't blink.

What's happen could be related to the 2.1 Firmware Update?

I notice the the Netkas 2.1 Firmware Update for Mac Pro 1.1 in my case update only the Firmware and not the SMC (still 1.7f10), is this normal?

Thanks in advance to everyone….

Mik

⟐ Answered 5월 10, 2019 at 2:06 GMT-7

Does it influence the performance in any way when the firmware is not updated?

⟐ Answer edited 5월 14, 2019 at 6:06 GMT-7

as you are the experts in the field — my Mac Pro exhibits some audible coil whining. I've tried unplugging all kinds of devices and ran the device through another power outlet. I've disabled Bluetooth and WiFi to change power consumption. I've changed the fan speed with iStat menus and tried putting some strain on the GPU and CPU with benchmarks. The noise stays the same: http://cl.ly/3c032O0R3v2a

Any ideas or would you say the noise is within spec? Apple would exchange the nMP for a new one but they are not sure if that would fix the issue...

⟐ Answered 5월 03, 2022 at 0:15 GMT-7

1. Motherboard

2. CPU

3. Yosemite or El Capitan?

⟐ Answered 11월 27, 2023 at 1:23 GMT-7

⟐ Commented 7월 22, 2022 at 1:30 GMT-7

⟐ Commented 8월 30, 2023 at 17:02 GMT-7

Customer reported that the system had randomly powered off by itself a few times before it finally wouldn’t power on any more.

Currently when power button is pressed there are no lights, no clicks, nothing. I already tried an SMC reset and replaced the CMOS battery, not because I thought they would work, but mostly to check the boxes and hope for a lucky break.

At this point I’m pretty sure it’s either the logic board or power supply, with my gut saying it’s probably the power supply. Unfortunately I don’t have spare parts to test with to confirm which is faulty. Is there any way to test voltages on the power supply to determine if the power supply is dead or short pins to power it on?

⟐ Answer deleted 7월 23, 2021 at 12:25 GMT-7

Note I also posted is also on another site and I’m gonna include everything with yesterday’s updates at the end.

I replaced the GPU on my Mac Pro 2013 and while doing that I replaced the thermal paste for the CPU too now the computer is not powering on ( No POST ) I have the lights on except the power button light is off .. first I thought it's something with the new refurbished GPU but it's not because I tested it with another working GPU.

• The battery inside needs a replacement ( I did a replacement with no luck. )
• The power supply is not working ( I can see the red light after hocking up the power cable ( Without the logic board installed if the logic board is connected to the riser the red lights in the logic board and the PSU will go off as normal behavior ) I also get the green light when I press the little check button on the I/O board from the inside ( more details about this at the end ) then I used the multimeter to measure the power that it's going to the CPU riser and it's giving me 1V .. I don't know if it's the right number.
• The logic board got damaged? but why? everything is fine also it's red light is on when it's connected to the PSU only .. it's not my first time disassembling the Trash Can and I did it so many times and I even looked at the sensitive data cables that connect the logic board to everything I can't see any broken pins.
• Someone said press shift on the keyboard while turning on the device but I’m using a USB keyboard and there is no power on the USB ports ! the screen wakes up though pressing the power button (connected via thunderbolt )

Finally, I always take precautions like wearing an anti-static bracelet and not using any screwdrivers with magnets also changed the power cable connected it directly to the wall

Please help .. Thanks

TL,DR : I/O lights On except the power button No Chime No Fan Just the Lights for 15 sec then they go off .. PSU seems fine ( I might be wrong ) .. I put the older GPU back, replaced the battery with no luck.

UPDATE #1 :

I followed this guide ++https://logi.wiki/index.php/Mac_Pro_6,1_...

I got #2 & #5 on while the computer is off .. will try to do power on without the lid I just need a magnet that I don't think that I actually have at the moment

UPDATE #2: I managed to find a magnet and activate the computer power without the cover being on ( if you wanna do it too just stick the magnet next to the power button outside the seam. )

Now thankfully I got all the Diagnostic LEDs on Green Light Except the first one which means everything is working !!!!! then why it's not POSTING !!!!?????

Also, does anyone knows how to check the CPU Riser LEDs without dismantling the whole thing and make everything dangling with a magnet stuck to the I/O it’s seems a little bit dangerous to do that?

UPDATE 3 : I just noticed that Error LEDs ( two RED ) on the logic board are on ! ... Still don't know what that supposed to mean.

Please help

Thank you

⟐ Commented 10월 09, 2024 at 9:15 GMT-7

None of the machines had hard drives or video cards. I bought a couple of new hard drives and a couple of new (MSI F5450 MDIGH) video cards, installed one of each into each of the two Xeon machines, and pressed the button.

Both machines turn on and the power lights are on steady. But I get no video from either machine (I have two monitors plugged into each - one via HDMI and one via VGA). I don't understand why I'm not getting any video (and no video is making it hard to troubleshoot anything else). Is it because there's no drivers on the brand-new hard drive?

For what it's worth, I opened up the case and started each machine, and I see no LED indicator lights anywhere inside (I think there are supposed to be some, but I don't know where).

Today, I connected my MBP to one of the machines via Firewire and started the Pro in Target Disk Mode. I immediately got the "The disk you inserted is not readable..." dialog on the MBP and used Disk Utility to format it. Then ran OS X installer and installed Yosemite on the newly-formatted HD in the MP. Unplugged everything and restarted...still nothing.

Any ideas on what's going on here?

⟐ Commented 8월 24, 2022 at 2:52 GMT-7

The new Mac Pro - are the RAM and SSD upgradable ?

Thanks

⟐ Answer edited 12월 07, 2017 at 6:41 GMT-7

⟐ Commented 4월 13, 2021 at 9:11 GMT-7

This one has had me busy for a couple of days. Came in with three blinking lights on the power button and kernel panic on start up. After testing for an hour it would not boot at all. The machine had two 1 GB sticks and four 256 sticks. After extensive testing I found all the sticks were fried. Replaced RAM with two good 256 sticks of my own. Switched hard drive to a known good system and it booted to the kernel panic screen again. After testing for another hour it fried my RAM and I get no boot. I ask this question because I don't know if the power supply might be involved and I don't want to replace the motherboard just to have it fried again. I haven't seen a machine that keeps frying RAM before. Suggestions?

⟐ Edited 1월 20, 2014 at 17:41 GMT-7

My Mac Pro 1.1, with 2-2,66Ghz dual-core Intel Xeon processors is not working proper anymore. I would like to change out the CPU's. instead I'll get 2 Xeon Quad x5355 CPU's and push up my system to an 8 core. I'm told it should work by my technical dealer, but I'm not sure if the power supply will supply enough power.

I would also like to change my graphics card, which should i get? My dealer recommend an ATI 5870 or ATI 4870. How loud are they compared to NVIDIA GeForce 7300 GT? or which would you recommend? Also how can I find the information on what works.

Can someone with experience in changing out the CPU's on the Mac Pro systems help me here.

i just want to know, if my Mac will work with the new CPU boost, and which graphics card you recommend?

Many thanks!

Serious Stets

⟐ Commented 3월 30, 2019 at 19:29 GMT-7

I did have them professionally clean the inside because I noticed the fan would come on stay on after a certain point.

It's also well ventilated.

If I do not use the computer for days, it will work fine for a while. However if I use it consecutive days, the problem appears and happens more frequently. I spent $700 having the "repair" place clean it and tell me nothing was wrong.

Please advise.

⟐ Commented 5월 17, 2021 at 7:40 GMT-7

Is it possible to repair the PSU I already have? Any ideas?

Thanks everybody for your replies. I do not understand much of PSU, and was wondering if it was a matter of simply replacing specific parts, like the ones that are usually faulty, I thought that kind of knowledge would be good to have documented out there.

But given the fact that it might be extremely dangerous, or excessively complicated, I now understand the reason the information is unavailable, and conform to the fact that I will have to replace it via Apple.

On a tangent matter,the problem seems to me, that this sort of information is really not available even to certain technicians. I took the computer to an Apple Authorized Center and they told to replace the logic board. I still have the same problem and it really seems to be the PSU, but I can't pinpoint the diagnostic.

⟐ Commented 4월 13, 2025 at 8:35 GMT-7