DAN! Okay I found out what the problem is, you're going to want to make a note of this as it will be helpful to others.
Firstly, I stumbled across this which provided clues https://discussions.apple.com/thread/7875620
It's the firmware that is the issue! I noticed both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
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Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either so had to mount the drive internally. I had an error [http://www.lowfokus.com/2011/08/10/there-was-a-problem-installing-mac-os-x-try-reinstalling/|"There was a problem installing “Mac OS X”. Try Reinstalling"]. Considering how much time it took me I'm very relieved that my hunch was correct!
+
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either so had to mount the drive internally. I also ran into an an error regarding installing from usb [http://www.lowfokus.com/2011/08/10/there-was-a-problem-installing-mac-os-x-try-reinstalling/|"There was a problem installing “Mac OS X”. Try Reinstalling"]. Considering how much time it took me I'm very relieved that my hunch was correct!
I downloaded this here: [https://support.apple.com/kb/DL1407?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.0]
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install [https://support.apple.com/kb/DL1653?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.2] afterward.
[image|1444632]
Now I just have to switch back to my SSD and go from there but at least I can see it's powering up now :)
Note to anyone reading this: Make sure you're plugged into AC power or the firmware update won't work (quite possibly why it didn't automatically update the first time around back in the day!). Also, take your time and breathe ;)
DAN! Okay I found out what the problem is, you're going to want to make a note of this as it will be helpful to others.
Firstly, I stumbled across this which provided clues https://discussions.apple.com/thread/7875620
It's the firmware that is the issue! I noticed both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
-
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either! Considering how much time it took me I'm very relieved that my hunch was correct!
+
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either so had to mount the drive internally. I had an error [http://www.lowfokus.com/2011/08/10/there-was-a-problem-installing-mac-os-x-try-reinstalling/|"There was a problem installing “Mac OS X”. Try Reinstalling"]. Considering how much time it took me I'm very relieved that my hunch was correct!
I downloaded this here: [https://support.apple.com/kb/DL1407?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.0]
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install [https://support.apple.com/kb/DL1653?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.2] afterward.
[image|1444632]
Now I just have to switch back to my SSD and go from there but at least I can see it's powering up now :)
Note to anyone reading this: Make sure you're plugged into AC power or the firmware update won't work (quite possibly why it didn't automatically update the first time around back in the day!). Also, take your time and breathe ;)
DAN! Okay I found out what the problem is, you're going to want to make a note of this as it will be helpful to others.
Firstly, I stumbled across this which provided clues https://discussions.apple.com/thread/7875620
It's the firmware that is the issue! I noticed both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either! Considering how much time it took me I'm very relieved that my hunch was correct!
I downloaded this here: [https://support.apple.com/kb/DL1407?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.0]
-
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install 1.2 afterward.
+
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install [https://support.apple.com/kb/DL1653?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.2] afterward.
[image|1444632]
Now I just have to switch back to my SSD and go from there but at least I can see it's powering up now :)
Note to anyone reading this: Make sure you're plugged into AC power or the firmware update won't work (quite possibly why it didn't automatically update the first time around back in the day!). Also, take your time and breathe ;)
DAN! Okay I found out what the problem is, you're going to want to make a note of this as it will be helpful to others.
Firstly, I stumbled across this which provided clues https://discussions.apple.com/thread/7875620
It's the firmware that is the issue! I noticed both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either! Considering how much time it took me I'm very relieved that my hunch was correct!
I downloaded this here: [https://support.apple.com/kb/DL1407?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.0]
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install 1.2 afterward.
[image|1444632]
Now I just have to switch back to my SSD and go from there but at least I can see it's powering up now :)
+
+
Note to anyone reading this: Make sure you're plugged into AC power or the firmware update won't work (quite possibly why it didn't automatically update the first time around back in the day!). Also, take your time and breathe ;)
DAN! Okay I found out what the problem is, you're going to want to make a note of this as it will be helpful to others.
Firstly, I stumbled across this which provided clues https://discussions.apple.com/thread/7875620
-
It's the firmware that is the issue! I noticed that both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
+
It's the firmware that is the issue! I noticed both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either! Considering how much time it took me I'm very relieved that my hunch was correct!
I downloaded this here: [https://support.apple.com/kb/DL1407?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.0]
-
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install 1.2
+
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install 1.2 afterward.
[image|1444632]
Now I just have to switch back to my SSD and go from there but at least I can see it's powering up now :)
DAN! Okay I found out what the problem is, you're going to want to make a note of this as it will be helpful to others.
Firstly, I stumbled across this which provided clues https://discussions.apple.com/thread/7875620
It's the firmware that is the issue! I noticed that both the 17" models that wouldn't power on my interface had the same firmware as I posted in the screenshot! Firmware Version: d.0, Port Micro Firmware Version: 1.2.1
Unfortunately the correct firmware cannot be installed from any of the later versions of OS X (not sure from when, but presuming Yosemite?) so after a late night and a lot of mucking around I managed to get Mountain Lion 10.8.5 installed onto a spare toshiba drive I had, for some reason I couldn't install from an external caddy either! Considering how much time it took me I'm very relieved that my hunch was correct!
I downloaded this here: [https://support.apple.com/kb/DL1407?viewlocale=en_AU&locale=en_AU|Thunderbolt Firmware Update v1.0]
The newer updates 1.1 and 1.2 did not work at first saying "Your computer's Thunderbolt port does not need this update" and 1.2 says something about needing to be on 10.9, but I installed Thunderbolt Firmware Update v1.0 and then I was somehow able to install 1.2
[image|1444632]
Now I just have to switch back to my SSD and go from there but at least I can see it's powering up now :)