Hello everyone.
I have recently obtained a MacBook Pro A1989 model with a touch bar and Apple ID. Unfortunately, it does not want to start up.
No CPU Voltage.
U7800 Does produce voltages.
T2 Chip warming up very very little.
I do have voltages like 1.8, 0.9, 3.3, 2.5 volts, etc., present. I did not find any short circuits. Unfortunately, the device has no touch ID/start button. So, I have used the debug jumper to put the device into DFU mode. - It is getting recognized as a Macintosh while not in DFU mode and as Apple (DFU) while in DFU mode.
I thought to myself that it might need a BridgeOS revive. Unfortunately, I am not in possession of another Mac, so I have used VMware to set up a Mac Sonoma system. Apple Configurator does see the device in DFU mode. But whenever I try to revive it, it starts but unfortunately does not complete.
I am wondering, do you need to have a Mac, or does the revive option also work in a virtual machine? What about the touch ID/start button? Does the Macbook need to have one installed to be able to revive it (does the T2 chip check if that module is installed) or can it be ignored for now to revive the T2 chip?
Any help or what I should check would be appreciated.
Thanks in advance and best regards from Germany,
Nikan
I have recently obtained a MacBook Pro A1989 model with a touch bar and Apple ID. Unfortunately, it does not want to start up.
No CPU Voltage.
U7800 Does produce voltages.
T2 Chip warming up very very little.
I do have voltages like 1.8, 0.9, 3.3, 2.5 volts, etc., present. I did not find any short circuits. Unfortunately, the device has no touch ID/start button. So, I have used the debug jumper to put the device into DFU mode. - It is getting recognized as a Macintosh while not in DFU mode and as Apple (DFU) while in DFU mode.
I thought to myself that it might need a BridgeOS revive. Unfortunately, I am not in possession of another Mac, so I have used VMware to set up a Mac Sonoma system. Apple Configurator does see the device in DFU mode. But whenever I try to revive it, it starts but unfortunately does not complete.
I am wondering, do you need to have a Mac, or does the revive option also work in a virtual machine? What about the touch ID/start button? Does the Macbook need to have one installed to be able to revive it (does the T2 chip check if that module is installed) or can it be ignored for now to revive the T2 chip?
Any help or what I should check would be appreciated.
Thanks in advance and best regards from Germany,
Nikan
