Kemper won't do Firmware upgrade

ebenezer · Sep 11th 2019

Hi,

my Kemper has Firmware Version 5.7.8 right now and it won't upgrade to a newer version.

I tried different USB sticks, formatted the sticks with my PC and with my Kemper, used the recovery mode (Press < + > and boot into Tuner) and inserted the USB stick while running.

None of the methods worked. When booting in Recovery Mode, the display shows "ERROR: invalid file"

Has anyone an idea what could be the problem here?

Thank you!

Raoul23 · Sep 11th 2019

Have you tried to update via rig manager ??

paults · Sep 11th 2019

Did you unzip the file?

Put the *.bin file into the Update folder on the USB drive.

ebenezer · Sep 11th 2019

I connected the Amp to the Rig Manager and it wouldn't do an update.

I also did everything as it was mentioned in the manuals, I unzipped the update and put it once in the root folder of the USB drive and once in the update folder. Either way it wouldn't do an update.

DamianGreda · Sep 11th 2019

Make sure there is only one file in update folder named "kaos.bin" . Delete any kaos.bin from root . Connect the stick when the KPA is on . Make sure you are downloading latest release FW 6.0.0.14574 from kemper amps page (PROFILER Operating System 6.0.0 Release for Head, PowerHead, Rack, and PowerRack).

paults · Sep 12th 2019

You could try downloading the file again. If you still can't install it, I suggest contacting Kemper Support:

https://www.kemper-amps.com/contact

Zappledan · Sep 12th 2019

Quote from DamianGreda

Delete any kaos.bin from root .

I only put kaos.bin in the root. I've never had an issue that way.

DamianGreda · Sep 12th 2019

Quote from Zappledan

I only put kaos.bin in the root. I've never had an issue that way.

You are right - it probably changed some time ago and KPA is tracking both locations.

I think @ebenezer is using stage firmware.

Burkhard · Sep 12th 2019

You have either downloaded the OS for the Stage or the file got damaged during the download, unzip, store on USB memory stick process. If the file is ok, the upgrade process via USB memory stick is extremely reliable.

The current Rig Manager revision might not be able to deal with OS 5.7.8 anymore.

ebenezer · Sep 15th 2019

Ahh I downloaded the Profiler Stage firmware.

Now I got the actual PowerRack firmware and it works!

Thank you all very much!!

Raoul23 · Sep 15th 2019

Glad you got it sorted

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