KOS Update | :vokal, :kontroller, :konductor, DMI-KLANG

How do you want to update?

There are different ways to update new generation KLANG hardware. Choose your preference below.

Installing Update from a USB drive (default)

1. Prepare USB Drive

Any USB stick with 2 GB or more can be used. Plug the USB stick into

your Computer. Format it to a single FAT/FAT32 partition.

PLEASE SEE www.klang.com/format on how to format and partion.

2. Download KOS Update Files

Download Latest KOS for your product from here…

3. Copy KOS Update Files

Copy the two KOS update files to the USB stick’s root directory.

a) KLANG-00-CompletePackage-xx.yy.zz.KLANGupdate2 and

b) failsafe.ub

4. Initiate Update Procedure

Power off KLANG hardware.

Insert USB stick to USB port of KLANG hardware.

:vokal

Power on device WHILE pushing and holding the RESET/UPDATE button until Status LED switches from BLUE to WHITE (approx. 3 seconds).

The LED will blink and might change color a few times (approx 5-15 min).

Wait until Status LED turns to PURPLE.

DMI-KLANG

Power on device WHILE pushing and holding the RESET/UPDATE button until Status LED switches from BLUE to WHITE (approx. 3 seconds).

The LED will blink and might change color a few times (approx 5-15 min).

Wait until Status LED turns to PURPLE.

:kontroller

Power on device WHILE holding down the CONFIG button until displays

indicate update process. Wait for progress until device has booted.

:konductor

Power on device WHILE pushing and holding the RESET/UPDATE button until display indicates KOS USB update procedure (approx. 3 seconds).

The display will show the progress and might change color a few times (approx 5-15 min).

Wait until device has fully booted.

Over-the-Air (OTA) Update from Internet

First make sure the device you want to update is at least running KOS 5.1.x. If the KOS version installed is older than KOS 5.1.x, the only way to update the KOS is via USB.

Login with KLANG:app to the device.

Go to CONFIG > INFO > SET > Update Firmware from Web to…

Enter the serial number of the device and click OK to proceed.

Check the progress of the download process in the INFO screen.

The device will then reboot automatically, install the update and reboot with the new KOS version.

Over-the-Air (OTA) Update WITHOUT Internet

This option is introduced with KOS 5.2 and requires a certain KOS version (or newer) to be installed on the processor to work.

Update :kontroller to KOS of a Processor (PULL)

First make sure the device you want to update is at least running KOS 5.1.x. If the KOS version installed is older than KOS 5.1.x, the only way to update the KOS is via USB.

For :fabrik and :vier, download the :kontroller KOS version and copy both update files to an empty USB drive as if you would perform a USB update. Insert this USB drive into :fabrik and :vier and then :kontroller can download from there.

Login with KLANG:app to :kontroller

Go to CONFIG > INFO > SET > Update KOS to match

Check the the download progress in the INFO screen.

The device will then reboot automatically, install the update and reboot with the new KOS version.

Auto Update :kontroller to KOS of a Processor (PUSH)

First make sure the device you want to update is at least running KOS 5.1.x. If the KOS version installed is older than KOS 5.1.x, the only way to update the KOS is via USB.

Connect a :kontroller to a :vokal, :konductor or DMI-KLANG and :kontroller can access the KOS version installed on that device. The :kontrollers need to be logged in to a mix of the processor for the auto update procedure.

Login with KLANG:app to the processor.

Go to CONFIG > INFO > SET > Enable Kontroller Auto Update

All :kontrollers logged into a mix on this processor will perform an update if the KOS version on the processor is newer than the KOS version currently installed on the :kontroller. Depending on the number of :kontrollers on the network the download process might take a while and :kontrollers might retry to update if a previous attempt was not successful.

The processor will push the update to all :kontrollers until the processor is rebooted.


Something went wrong – Troubleshooting

Processor does not boot anymore. LED stays blue or yellow

Don’t worry, here are the things to check and try first. If you need help get in touch with support@KLANG.com

KOS 5.1 or higher has a built in rescue system. Follow these steps to activate it.

Activate Rescue System (Read all steps before performing them as we have to be fast)

  • 1) Switch off KLANG:vokal
  • 2) Remove ALL USB keys
  • 3) Press and hold the Reset button on the front of the unit
  • 4) Switch power on
  • 5) Be aware: LED turns blue. When LED turns white (button press detected) > RELEASE button
  • 6) Be aware: LED starts flashing red/blue > PRESS button again and hold for 1 sec. (The time window for this is less than 2sec). If you missed it just repeat from Step 1. 
  • 7) LED stops flashing immediately, and will remain in its last state – either red or blue – for about a minute
  • 8) LED starts blinking white (Internal Rescue System is being installed)

Processor LED does not light up, but power is ok

Follow the recovery guide here.

Here are some tips and tricks if the update procedure does not start right away.

If KOS 5.1 or later is installed on the device already, there is a detailed LED color sequence (DMI-KLANG, :vokal) during the update phase, to help troubleshoot. The color changes a first time when the button press is detected from blue to white, a next time when a USB drive was successfully detected from white to yellow and a third time when the update files were detected on the USB drive from yellow to cyan (light blue). During the update the LED flashes white with different speeds. On :kontroller and :konductor the progress is shown on the display.

Prior to KOS 5.1 the LED color changes a first time from BLUE to WHITE when the button press is detected. During the update the LED flashes white with different speeds. On :kontroller and :konductor the progress is shown on the display.

The LED will directly turn orange and then purple if the update attempt failed and it will boot the currently installed KOS instead.

Make sure that you use a thin object with a diameter smaller than 3mm to push the recessed Update/Reset Button and that you feel the button click.

Check USB drive in KOS. Let the KLANG processor fully boot. Connect with KLANG:app to it and go to CONFIG > INFO > Copy LOG to USB. Carefully check the overlay message if the transfer to USB was successful or not. If it was successful it means the USB drive works in KOS and it is very likely to work well during the update. If the transfer was not successful, see below.

Try a different USB drive. Use another drive with a size between 4-16 GB. Not all USB drives behave identical so it is worth trying different ones. Check if it works in KOS (see step above).

Check format and especially the partition of the USB drive. Details here…

Updating locally from an Apple Mac (EXPERT)

KOS 5.1.4 or higher must bei installed on the KLANG processor for this approach to work.


Download the KOS Update files, if automatically unzipped, compress again.

Open Terminal and cd to the folder with the KOS Update ZIP Archive

Type the following and hit ENTER to start a local webserver that shares the content of this folder… To stop this server after the update press CTRL + C.
python -m SimpleHTTPServer 8000

If this step has thrown an error because a different version of python is installed on your Mac computer, please python3:
python3 -m SimpleHTTPServer 8000

Download the command line tool KLANGosc www.KLANG.com/KLANGosc and unzip.

Open another terminal window and cd to the folder with KLANGosc

Type in the following command, substitute your KLANG processor’s and Mac IP address and enter the name of your KLANG update ZIP Archive and hit ENTER.
./KLANGosc <YourKLANGprocessorIP> 9110 /KLANGfabrik/Hardware/UpdateFrom s http://<YourMacComputerIP>:8000/<ZIParchiveName>.zip

Don’t worry, here are the things to check and try first. If you need help get in touch with support@KLANG.com

KOS 5.1 or higher has a built in rescue system. Follow these steps to activate it.

Activate Rescue System (Read all steps before performing them as we have to be fast)

  • 1) Switch off KLANG:vokal
  • 2) Remove ALL USB keys
  • 3) Press and hold the Reset button on the front of the unit
  • 4) Switch power on
  • 5) Be aware: LED turns blue. When LED turns white (button press detected) > RELEASE button
  • 6) Be aware: LED starts flashing red/blue > PRESS button again and hold for 1 sec. (The time window for this is less than 2sec). If you missed it just repeat from Step 1. 
  • 7) LED stops flashing immediately, and will remain in its last state – either red or blue – for about a minute
  • 8) LED starts blinking white (Internal Rescue System is being installed)

In order to delete all internal settings (IP and network configuration, show files, log files, unit name…) place the following empty file named “DeletePresets” besides the two other KOS update files on a USB drive. Then perform the KOS update procedure. During update all settings will be copied to USB as a backup but they will not be restored to the KLANG processor.