My MacBook Professional was bricked after putting in macOS 15.6.1 replace.
It by no means restarted. Gave the impression to be utterly useless.
Nevertheless I discovered I might get it in addition after disconnecting the battery.
It will boot to the login display, then after a couple of minutes, with the progress bar at about 50% it could crash.
I might put it goal disk mode and duplicate off the information I wanted to maintain.
However it could not boot into protected mode, or restoration.
I’ve a Bootcamp partition on it, and utilizing the Possibility key at startup I might boot into Home windows and that gave the impression to be working OK.
I attempted a USB bootable installer, however whereas it appeared as a startup possibility, the MacBook wouldn’t run it (most likely as a result of the boot from exterior drive safety setting is OFF – I’ve no reminiscence of fixing that setting).
I couldn’t boot into restoration mode.
I guessed that my battery (500 cycles) failed in the course of the 15.6.1 replace (I used to be not on energy on the time – my unhealthy) and possibly the firmware could possibly be broken.
I managed to get it into DFU mode and erased the drive and restored the firmware, however step 4 of 4, putting in the system, failed with a timeout.
I can boot into web restoration – certainly it solely boots into web restoration now.
I’m utilizing ethernet connection (by way of Ethernet to USB-C adapter), and ultimately the progress bar seems and slowly advances to about 5mm, after which stops. The time to finish set up exhibits as 24 hours, however 24 hours later it nonetheless hasn’t moved a millimetre extra.
Any clues/recommendations as to how I can get out of this gap?