downgraded to older firmware 1.35, which stated after reboot nvram restore failed. upgraded again to 1.50 and did a factory reset and now my keys are working again 
opend a ticket anyway at elektron.se
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Please fix the boot freeze bug asap!
Iāve never had this issue before 1.50.
Instead of blaming it on the condensors, maybe you should talk to the dev team managers about their āstableā releases QC and testing procedures.
You canāt leave such a critical bug in a stable release and then ask people who do LIVE performances to power off and wait 20 seconds. Thatās why you have betas and stable releases, to not make a fool out us.
Please voice your concern directly to Elektron support.
This place is merely for and run by users, which means youāre basically shouting at us.
So please have a seat, some tea, breathe slowly and explain your problems.
13 Likes
For what itās worth my first AR MKII had this behavior on the previous firmware. I exchanged it when it was new and my replacement, manufactured in 2020, did not experience this.
If you do contact Elektron-and you should-make sure to include your serial number.
Mine is a new from 2020 (black version).
Elektron told me they are aware of this behaviour and are working on it. Iām not sure if I have to send it back to Thomann especially if it can be fixed 
It seems firmware related so hold tight - they will deploy a fix as soon as physically possible. Sending back to Thomann will do nothing.
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Makes sens 
thx.
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All good! Iād be shocked if the fix doesnāt come this week or next - they must be working round the clock on getting it sorted asap 
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Thatās what they said. Looks like the next one his high on priority
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Yeah. Thatās a new firmware bug.
Got an A4MKII. Sometimes it doesnāt boot up. Usually powering it off, waiting 20s and powering it back on works.
On one occasion it booted and did not make any sound.
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Probably doing QC and testing that dogu just complained about them not doing
I didnāt upgrade mine yet (not had any time to play anyway) so Iām waiting to hear that it gets fixed before trying it.
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I upgraded, and have this minor irritation on rapid power cycling. However, the upgrade has added so much new pleasure and power to the A4mkii that I could only recommend it despite the minor bug.
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Hi,
I am a bit puzzled. With the old OS, in the step sequencer I could just change notes while holding down trig, and note key, easy enough. With the new OS, when I try this, I am adding notes to the ARP page. Well yes, plockable ARP notes is a feature I wished for, but changing notes is much more basic functionality it was so straightforward beforeā¦
I realize that if I press note key first, then press trig, I can add a note trig to a specific trig, but it only seems to work if I donāt have a note on that trigā¦ Which does not seem very easy way to just step sequence notes on the fly, also if I have to remove note to add different note I would lose parameter locks.
All in all, I just cannot figure out how to change a note on a specific trig quickly while keeping plocks intact.
Am I missing something?
Thanks!!
Zsolt
up
I just tested and It works like normal for me,
hold a trig + press note enters the note, if I add multiple notes (chord) on a step
it adds the notes in arp section as it always did.
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yep - nothing has changed - working fine
itās always been hold trig first and press a note
pressing the note first only changes the position of the trackās ānewā default note entry value if you subsequently tap an empty trig
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Thanks, I confirm, after a device restart it is working fine now, so cannot reproduce now. Hopefully I stays this way
Same here, very annoying, never happened before. After 3-4 power ups it usually ok.
This is now happening to me. Post-update (done on the day of release), I had the ādim lights for a few secondsā before power up completed. Now twice today, the A4 MKII powers to the logo and the firmware version and just freezes. Powering it off for a minute then back on seems to remedy it but itās still worrisome nonetheless. Hopefully itās something that the devs can reproduce and remedy.
Sorry to hear some of you are still experiencing this. Fortunately I seem to be OK after the initial lockup, though it seems something is not right so letās hope the devs are able to nail it down and we get another update to correct whatever the issue may be.