iOS Update & Recovery limits

Created: Modified: Knowledge Base

iOS installations send a huge amount of data through USB ports, especially when updating multiple devices at one time. This surge can make the Launchpad unstable.

To ensure stability, GroundControl limits the number of concurrent iOS installation operations on each Launchpad. Only 4 concurrent update operations are permitted on Windows, and only 8 on Macintosh. Other devices will show “Installing OS” but will actually wait until other devices have completed the OS installation process.

You may adjust these limits up — if you have robust hardware — or down — if you suspect your hardware is imposing its own constraints. See the instructions below.

1. Make sure to quit your Launchpad before starting.

2. Open the Windows command prompt by typing “cmd” into the Windows Start search box.

If using GroundControl v3.2.3 or earlier:

3. In the Command Prompt window, change directory to the Apple Support folder by pasting these two commands:

cd /d "%commonprogramfiles(x86)%\Apple\Apple Application Support"
defaults write com.GroundControl.gcservice ConcurrentOSInstallLimit -int 4

Replace “4” with the concurrency limit you wish to have.

If using GroundControl v3.3 or later:

cd /d "%programfiles(x86)%\GroundControl"
gcprefs write com.GroundControl.gcservice ConcurrentOSInstallLimit -int 4

Replace “4” with the concurrency limit you wish to have.

5.   Start your Launchpad.

1. Make sure the Launchpad service is stopped.

2. Open the Mac Terminal app, which is in Applications > Utilities.

3.  Enter the following command, but replace “8” with the concurrency limit you desire:

defaults write com.GroundControl.gcservice ConcurrentOSInstallLimit -int 8
4. Start your Launchpad. 

To reset back to default, choose “Reset Launchpad” from the Launchpad menu.