Here are the instructions:
System requirements
To install EXs, you’ll need:
KRONOS system version 1.5.0 or later. The latest system version can be doanloaded from
www.korg.com/Kronos/Support
Installing EXs
Unzip the downloaded EXs.zip file.
Unzipping the archive will result in a folder containing several different files.
Copy the unzipped EXs folder to a USB storage device, such as flash memory or a USB hard drive.
Safely disconnect the USB storage device from your computer.
Connect the USB storage device to one of the KRONOS’s two USB A ports.
Press the DISK button to enter Disk mode.
Touch the "Utility" tab.
Using the "Drive Select" menu at the bottom of the page, select the USB storage device.
Touch the folder containing the EXs data from step 2, then touch "Open."
Touch the EXs.exsins file to select it.
Select "Install EXs" from the drop-down menu, or simply touch "Install".
The system will check to confirm that the installation files are valid, and that there is sufficient space on the SSD to install the EXs. Next, an “Install EXs ”dialog box will appear:
Touch "Install" to continue with the installation.
The confirmation message “Are you sure?” will appear. If you decide to cancel the installation, touch "Cancel."
Touch "OK" to continue with the installation.
The installation will then begin. This may take a while; a progress bar shows the installation as it proceeds.
Next, the newly installed files will be verified. After the verification has completed successfully, the progress bar will disappear, and the installation is complete. The EXs sample data itself is installed on an invisible, protected part of the disk. To use the EXs, you’ll load its associated files, which will be installed into a new folder named “EXs (title) ” within the Q Up Arts folder.
Turn the power switch off, wait 10 seconds, and then turn it on again.
Loading the new samples and sounds
You can load the samples and sounds(Programs, Combis, Drum Kits, Wave Sequences, and Songs) into the default locations all at once.
To do so:
While still in Disk mode, touch the "Load" tab.
Set "Drive Select" to HDD: INTERNAL HD.
Select the Q Up Arts folder, and touch "Open."
Select the EXs (title) folder, and touch "Open."
Select the file "EXs.PCG."
Touch "Load."
A dialog box appears.
Enable the check-box labeled "Load EXs.KSC. too."
This will load the samples along with the sounds.
Set "Select .KSC Allocation" to "Append," and set "Load Method" to "KSC Setting."
Leave the ".PCG Contents" parameter set to "All."
Below the other parameters, you’ll notice a status line showing the Memory Required and Available. If the Available value is larger than Memory Required, the text will be in black, and you can proceed. If the Available value is smaller than Memory Required, it will be shown in red characters. (*1)
Touch "OK" to load the data.