Loris,
The short answer is NO, the Memory Manager will not work with the stock version of the software.  There is an addition of the original non-graphic code on the HamsKey.com page.  If ther is room in the v6 Nano software, you could see about adding it.  From what I understand of Reed N.s software, there is not any room without taking out other features.

Here is the link:
http://www.hamskey.com/2018/01/how-to-use-ubitx-manager-for-original.html

73
Evan
AC9TU