I had read the manual for the new HUD it mentions the OS is WIN CE 6.0.
Is not Android.
Regarding the E-Link, I am not sure if it is same as mirror link with different marketed name. The new HUD doesn't support my HTC U11 on Androids Oreo 8.0.
I had tried using my old HTC M7 the connection can be done and it pop up at driving mode apps (from Carbit Wuhan).
Out of curiosity, I downloaded Carbit for my U11. But it can't be link.
From the list of compatible phone, highest supported in list is Android 5.x which is kind outdated

Updates:
Is not a proton or HUD maufacturer fault on these or phone manufacturer ( HTC in my case)
Google seems change the way mirror link works since Android 7.x (Nougats). Even user from Honda Jazz with Samsung phone having same issue where after updated from Android 6.0 to 7.0 the Honda Jazz had "Divorce" with his phone.
Android is built for infinite of devices, but the downside is u won't have nice control on the protocol like Apple.
Oh thanks for the info bro.