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This seems a reasonable question.
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No.
As with every firmware on Phantom, not just the newest one. The latest release of DOS has never been reversible. There’s no physical port on the unit to do a firmware recovery by injecting and overwriting the current one and there’s no way to reverse updated firmware to an older version through software, this would likely conflict with updated firmware packages in certain chipsets. Just as to downgrade an iOS device you must have a physical connection to the device to overwrite the exisiting firmware partition. It’s the same here. The device cannot overwrite itself while using itself. I’m not sure if they could write a downgrade option into the software on multiple system partitions or if the chipset cannot actually support that.
Please be sure to read the support document on devialet.com about migrating to DOS2 before upgrading.
There is no beta testing program from Devialet available to the public and updating to DOS2 poses no risks, apart from some apparent system instability or disliking to the OS from some users. Which has always been there either way (good or bad).
Apart from that it is up to you to device what to do.
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Devialet Phantom (White)
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06-Nov-2019, 14:05
(This post was last modified: 06-Nov-2019, 14:09 by MusicEnthusiast.)
Sorry to criticize you but the sync problem is a serious problem and Devialet had already confirmed that it is a software problem which has nothing to do with people being too „stupid“ to read guidelines or setup the system properly. The only stupid thing I and some other folks out there did was to believe that a DOS2 would help me/us to get rid of the dialogue (which it definitely does but at the cost of a properly working stereo system).
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06-Nov-2019, 14:34
(This post was last modified: 06-Nov-2019, 14:35 by daibaron.)
No one is stupid here, for a very long time Devialet is not able to handle correctly any kind of issues by providing a decent support.
DOS2 was supposed to be a new start for every one including the so called stupid people.
Devialet support team is just polite enough to take my complains but no solutions were given so far.
People using DOS1 are still not satisfied with what they have
People using DOS2 was literally amputated of services found is DOS1 + stability issues
The majority of users here are not interested in Lossless audio and for them Bluetooth is working just fine.
That's the reason why only few people are complaining.
Losing stereo that's all !
Please excuse my poor reputation
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Since it was suggested that people that have problems with DOS2 just didn‘t follow the guidelines or are too stupid, I just want to add:
I read everything before upgrading to DOS2 and then followed the guidelines meticulously.
But still, something that‘s extremely important to me and was promised to work, just doesn‘t work anymore.
That being airplay via Dialog because my Phantom is pre-airplay.
Now sometimes problems arise and I didn‘t expect DOS2 to be perfect.
But I have tried to call support for three days now. All that happens is that I wait in line and after a few minutes finally hear that their lines are busy and that I can leave a message. No one ever called me back. So I complained via mail. And two days later finally got a reply that was really just asking if I really had upgraded Dialog and if the light was on. I emailed them back rightaway and haven‘t since heard from them. That‘s just not good customer service and I think I have every right to be unhappy about that. And there‘s absolutely no need for anyone to be upset or defensive about it.