Feedback about DE3815TYKE BIOS upgrade to TY0044.BIO ?

My DE3815TYKE was recently updated to v44 :TY0044.BIO

md5=efbfc3fb5d6a6bacff51f717533eeb30

http://downloadmirror.intel.com/25040/eng/TY0044.BIO

http://downloadmirror.intel.com/25040/eng/TY_0044_ReleaseNotes.pdf

Same file in  TYBYT10H.86A.0044.BI.ZIP http://downloadmirror.intel.com/25040/eng/TYBYT10H.86A.0044.BI.ZIP

http://downloadmirror.intel.com/25040/eng/TYBYT10H.86A.0044.BI.ZIP

And It boots fine, VisualBios displays : "Ver: 0ACCT014"

*But* then fail to load my GNU/Linux OS (Ethernet and keyboard not working) ...

More details on demand

I reported the problem at :

https://servicerequestmgmt.intel.com/webticketui/emailpage.aspx?servicetcktnumber=8001222045&pagetype=st

(normaly you should not be able to view it, but in case of I shared the reference)

I havent downgraded yet but wait for confirmation first ...

Because DE3815TYKHE reported serious issues :

Re: DE3815TYKE - not turning on , after bios downgrade

Tell me if it's safe to downgrade to v24 to support headless usage :

https://communities.intel.com/message/285968#285968

Questions :

Which BIOS version to install on #DE3815TYKHE ?

Does the BIOS download feature used to work on that model too ?

Do you know other black magic procedures for NUC ?

Other hints :

From https://communities.intel.com/inbox?objectType=2&objectID=218772 "Try unplugging the NUC from the power outlet approx. 5 minutes, then power it back, then press the power bottom for 10seconds."

https://communities.intel.com/message/318723#318723

http://www.intel.com/support/motherboards/desktop/sb/CS-034965.htm

More to come in this thread or maybe I should create a knowledge base's article somewhere ?