You tried to back track the problem back to Feb 2019 but according to your post on
August 2019, your unit "seems like being back from repair ! It's so much of a pleasure to finally have a responsive device re this play/pause function !!!" so I assume your previous issues has been recovered at some point. This is tiring and I do not see the productivity of further discussion. I have no further comment to your case, please contact your dealer and let them take care of your case.
In August 2019, i was here referring to the play/pause delay being adressed in latest fw v1.7en. My unit actually never went to repair (thus my 'seems like'), but the play/pause delay was to me like feeling having a kinda faulty unit due to this not-so-user-friendly delay , so this is why i wrote this at this time.
And of course as i also stated here :
At this time, it could restart properly after a few restart attemps as far as i remember, and it even didn't required a double wipe
In February 2019, the boot issue occured only once and never came back... until this january 2020. So i was just mentioning this February 2019 boot issue to point out that a similar issue already occured once in the past with my unit during warranty period.
Now regarding mailing to Cayin, i also did this and i'm still waiting for an answer from them since January 18th. And you already have clarified in the meantime that there is no support during 2 weeks due to Chinese New Year (yet another bad luck for me).
I feel sorry to bother everyone here with my own case, i am just trying to make working a device i paid for about a year ago.
And forgive me if i try to fix this on my end but i haven't much options being left alone. And of course i might be wrong, but i can't help thinking that if i was anyhow assisted in investigating the issue (maybe there's just some bad files causing constant crash that i could delete or whatever...), this could save time (thus also money) for everyone : you, me, my retailer, Cayin's engineers... plus we could maybe nail down a fix for other potential users having similar issue, and we would also prevent a unit from travelling across the world and increasing carbon footprint.
There was actually some offer of user-self-fix-assist in this thread a few months ago :
https://www.head-fi.org/threads/cay...al-audio-player.862763/page-256#post-15016437
If you have formatted the internal memory, yes, you definitely will run into some operation problem. It can be rescued if you have good understanding and hands-on experience with either Android and Linux, we can send you some tools and files to recover the system. If you are not a hands-on person, you should send the N5ii to your dealer for repair service, your dealer probably will ship the unit back to us eventually.
I guess i was kind of expecting similar proposal for my own issue.
But no worries i understand this won't happen as i cannot have further help from Cayin re my issue in this board and i won't quote or @ you anymore re this subject.
Thanks for all your replies (no sarcasm here).
I will wait for my retailer or Cayin's mail feedback.
Peace to everyone.