Hi,
Here it is the original rom from this macbook mother board with a very strange behavior. I included the A1990 UB090 file that I found here in the forum, thanks for that. I can see that the content of the files is different, probably too different for just being than mine got a bit corrupted.
The behavior is that al four USB C ports negotiate the 20V completely fine and the computer boots. Connecting a USB hub, the sd card reader works, the Ethernet port works, HDMI works, but connecting a simple mouse does not work. The working functions of the USB Hub mentioned only work on the left USB ports (both) and will not work on the right USB ports. Initially it would look like the right USB C ports only work for charging. But then if I boot the computer with the Alt key pressed, the mouse will work on all 4 USB ports no problem. I addition to that, booting the computer in normal mode, after around 20 min, USB 2 devices will start working on all 4 USB C ports, but the USB Hub will still only work on the left USB C ports.
After checking many voltages around, reballing the CD3215, reflowing a few components, looking for shorts, I could not find any hardware problem.
It would be great if someone could check the BIN files I tell me if I should go on and flash the A1990 UB090 file I found here.
If my file is good and serves someone else, I already would be happy about it
Thanks in advance and sorry for the long story.
Here it is the original rom from this macbook mother board with a very strange behavior. I included the A1990 UB090 file that I found here in the forum, thanks for that. I can see that the content of the files is different, probably too different for just being than mine got a bit corrupted.
The behavior is that al four USB C ports negotiate the 20V completely fine and the computer boots. Connecting a USB hub, the sd card reader works, the Ethernet port works, HDMI works, but connecting a simple mouse does not work. The working functions of the USB Hub mentioned only work on the left USB ports (both) and will not work on the right USB ports. Initially it would look like the right USB C ports only work for charging. But then if I boot the computer with the Alt key pressed, the mouse will work on all 4 USB ports no problem. I addition to that, booting the computer in normal mode, after around 20 min, USB 2 devices will start working on all 4 USB C ports, but the USB Hub will still only work on the left USB C ports.
After checking many voltages around, reballing the CD3215, reflowing a few components, looking for shorts, I could not find any hardware problem.
It would be great if someone could check the BIN files I tell me if I should go on and flash the A1990 UB090 file I found here.
If my file is good and serves someone else, I already would be happy about it
Thanks in advance and sorry for the long story.
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