Booting and burning from usb device... ERROR. What happened?

315ea75b3a1edca04b66d0d49de1e7e757bfdcd5 · Jul 11th 2014

Hello everybody,

Yesterday I worked at home with my Kemper, as always everything went well, shutdowned it correctly..

Today I start it.. At 15/20% on the loading line, suddenly it shows this...

[Blocked Image: https://lh4.googleusercontent.com/-Gf2UGA4kYXw/U7_-dPxxSyI/AAAAAAAAAFQ/hH07rxnTr5I/w901-h673-no/IMG_0150.JPG]

I checked behind my Kemper, no USB Stick connected , nothing but AC plug and Output Jacks..

Restarted it.. Same image..

Started it with my usb only used with my Kemper, showed this.

[Blocked Image: https://lh5.googleusercontent.com/-v5ZBpIxp8Us/U7_-bnz0feI/AAAAAAAAAFI/dGx_OJrDW8E/w901-h673-no/IMG_0151.JPG]

Why does it look for a firmware file?! Everything was fine yesterday..

I was on 2.4.2 beta firmware. Thanks god I was at home so I moved the last 2.4.2 Release to my usb stick root.

It booted on it, rebooted, everything is fine now..

Someone have any idea of what happened to my Kemper?

Thanks !

Viv

waraba · Jul 11th 2014

Salut !

It happened once to me also ... Only cure is to have an USB token with latest stable kaos.bin at ROOT level and NOT IN the OS update DIR.

Sometimes the KPA starts in this flash mode, I don't know why, and it runs in loop until it find a right firmware file

mattt67 · Jul 11th 2014

Salut
It also happened to me a few weeks ago
Hopefully not during a gig

Ingolf · Jul 11th 2014

Should be reported to support, please.

315ea75b3a1edca04b66d0d49de1e7e757bfdcd5 · Jul 11th 2014

Thanks it not happened this week end (3 gigs coming...) and thanks it's easy to fix.. I'll always keep that kaos.bin in my usb root now..

Gonna report it.

Anyway thanks guys.

nervousfingers_29 · Nov 14th 2014

Just happened to me.... wtf....

I guess I will have to reinstall firmware?

This really sucks as I had a few profiles finetuned and they were just on the kemper.... I was actually planning to buy a matrix gt 1000 and use the kemper
live but I will put this option on hold now.... really frustrating

315ea75b3a1edca04b66d0d49de1e7e757bfdcd5 · Nov 14th 2014

Reinstalling firmware wont remove your rigs no worries

Since my last post , it never happened again.

Ingolf · Nov 14th 2014

Quote from nervousfingers_29

Just happened to me.... wtf....

I guess I will have to reinstall firmware?

This really sucks as I had a few profiles finetuned and they were just on the kemper.... I was actually planning to buy a matrix gt 1000 and use the kemper
live but I will put this option on hold now.... really frustrating

Yes, reinstall the firmware.
Which one is it BTW?
Dont worry about your profiles, they'll be fine.

nervousfingers_29 · Nov 15th 2014

Updated to the newest firmware (not the beta one) - everything is still there. Will keep the usb with the firmware near my kemper to be prepared.
Does anyone know if this bug was fixed in a firmware update?

315ea75b3a1edca04b66d0d49de1e7e757bfdcd5 · Nov 15th 2014

No, no idea about a future fix.

But again , it not happens every week, just keep your usb near your kemper and don't worry anymore about this

nightlight · Nov 15th 2014

Glad you were able to get it fixed?

Any reason you're on the infamous 2.4.2 firmware, the one where the sound was changed for the worse?

Bossie · Nov 23rd 2014

I had the same issue yesterday. Finally fixed it by putting the kaos.bin file in the usb's root (not the OS update).
I was using firmware 2.7.0.xxx, so I probably has nothing to do with older versions, infamous or not.
Guess the only way to play it safe is indeed to carry a usb stick with the machine at all times when using it live.

bigb6611 · Dec 1st 2014

I ran in this exact same issue, totally out of nowhere - software version 2.7.3. Kind of scary for live situation!

Opened support ticket.

Edit: forgot to mention that the above mentioned work around did fix the issue for me tool

[Blocked Image: https://dl.dropboxusercontent.com/s/ha3isufd36kni3r/Photo%202014-11-30%2020%2022%2031.jpg?dl=0]

Ingolf · Dec 1st 2014

Even when the workaround fixed it it would be nice if the mothership would chime in and say under what circumstances the profiler can lose its OS.

bigb6611 · Dec 1st 2014

Well all I can say is the Kemper team is aware of the issue. Here is the response I got from the Kemper support (thanks Burkhard, responded in no time )

Quote

sorry to hear about this issue. This issue can only appear during start cycle. It cannot happen while the unit is operating. We are currenlty a fix for this issue,which is software related. Until we will publish a firnware with this fix. I suggest to keep an USB stick handy with current firmware release in its root directory. In that case you are prepared and can heal the situation within a couple of minutes, which again can only happen during the start cycle.

Ingolf · Dec 1st 2014

Quote from bigb6611

Well all I can say is the Kemper team is aware of the issue. Here is the response I got from the Kemper support (thanks Burkhard, responded in no time )

THANK YOU, that's great to know.

alex_it · Dec 15th 2014

The new beta firmware 2.7.4 should fix this

michaelmellner · Dec 15th 2014

well new beta with the fix already here!

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