Hi,
My iPhone 6s plus keeps disconnecting and reconnecting when plugged into my Macbook Pro. This only started happening this year, and I assume it has something to do with an OS update. Believe me when I say, i have used a multitude of different cables. They all work fine with the wall charger and other Macs and PCs, and some are better when connecting to the Macbook Pro some worse, but this never goes in pair with their price and results are inconsisten. It is not an issue of cable quality, and in the meantime I confirmed it is not an issue of the iPhone port itself. I performed extensive troubleshooting, wiping the entire iPhone etc. Nothing helped.
I did my fair share of research and found out a solution. Although this might slow down connectivity with the iPhone, I did not experience any issues so far, but that does not mean the above procedure is completely safe. Do the following at your own risk, and after making absolutely sure you exhausted all other options (check other cable, check with other machine, check updates, reset location and privacy etc.). The process is reversible if needed (just switch unload to load, and disable to enable)
Here is what worked for me.
1. I noticed that when I manually kill the usbd process from Activity Monitor I was able to get a stable connection. Unfortunately after replugging, I needed to kill the process again. This was a PAIN, since if you did not time it right, the iPhone would connect again, restarting the process altogether.
2. To permanently remove the process from loading you need to run the following in the terminal:
launchctl unload /System/Library/LaunchDaemons/com.apple.usbd.plist
3. If you get the System Integrity error message, then reboot into recovery mode (Command + R on boot), open the terminal and run:
csrutil disable
Then start the machine and run the command from point 2 again.
Hope this helps.
My iPhone 6s plus keeps disconnecting and reconnecting when plugged into my Macbook Pro. This only started happening this year, and I assume it has something to do with an OS update. Believe me when I say, i have used a multitude of different cables. They all work fine with the wall charger and other Macs and PCs, and some are better when connecting to the Macbook Pro some worse, but this never goes in pair with their price and results are inconsisten. It is not an issue of cable quality, and in the meantime I confirmed it is not an issue of the iPhone port itself. I performed extensive troubleshooting, wiping the entire iPhone etc. Nothing helped.
I did my fair share of research and found out a solution. Although this might slow down connectivity with the iPhone, I did not experience any issues so far, but that does not mean the above procedure is completely safe. Do the following at your own risk, and after making absolutely sure you exhausted all other options (check other cable, check with other machine, check updates, reset location and privacy etc.). The process is reversible if needed (just switch unload to load, and disable to enable)
Here is what worked for me.
1. I noticed that when I manually kill the usbd process from Activity Monitor I was able to get a stable connection. Unfortunately after replugging, I needed to kill the process again. This was a PAIN, since if you did not time it right, the iPhone would connect again, restarting the process altogether.
2. To permanently remove the process from loading you need to run the following in the terminal:
launchctl unload /System/Library/LaunchDaemons/com.apple.usbd.plist
3. If you get the System Integrity error message, then reboot into recovery mode (Command + R on boot), open the terminal and run:
csrutil disable
Then start the machine and run the command from point 2 again.
Hope this helps.
