Hello,
I have a macbook Early 2015 A1502 EMC 2835 820-4924-A.
Whenever I try to update the system the device dies after reboot. It only comes back to life if the battery is disconnected, and then connected again (energy drain). Apparently the firmware update fails.
I can install High Sierra normally, but I can't install a newer one.
I can use a disk with a newer system that was installed on another machine.
I've already tested another chip and another bios file, but no effect.
Boot ROM: MBP121.0177.B00
SMC: 2.28f7
I've tried the procedure to perform the firmware update manually, using the macOS installer .fd file, but the macbook also dies when rebooting.
I have a macbook Early 2015 A1502 EMC 2835 820-4924-A.
Whenever I try to update the system the device dies after reboot. It only comes back to life if the battery is disconnected, and then connected again (energy drain). Apparently the firmware update fails.
I can install High Sierra normally, but I can't install a newer one.
I can use a disk with a newer system that was installed on another machine.
I've already tested another chip and another bios file, but no effect.
Boot ROM: MBP121.0177.B00
SMC: 2.28f7
I've tried the procedure to perform the firmware update manually, using the macOS installer .fd file, but the macbook also dies when rebooting.
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