I use the latest Experimental SatDreamGr Image for my SF4008. Now, I always get a crash when calling the update via the feed. Maybe because of an unknown built date, as shown on the info screen.
For more information, see the log:

OpenPLi Enigma2 crash log

crashdate=Do Okt 26 15:46:36 2017
compiledate=Oct 24 2017
skin=PIMP-my-PLiHD-by-talbs/skin.xml
sourcedate=2017-10-23
branch=develop
rev=53d7b82
component=Enigma2

stbmodel=sf4008
stbmodel=ultimo
stbmodel=dm800se
kernelcmdline=root=/dev/mmcblk0p4 rootwait rw vmalloc=692m bmem=700m@324m
nimsockets=NIM Socket 0:
imageissue=satdreamgr-openpli 5 %h


[eDVBPESReader] Created. Opening demux
[eDVBPESReader] Created. Opening demux
REMOVE Peer sf4008
[eDVBSectionReader] ERROR reading section - Value too large for defined data type

Traceback (most recent call last):
File "/usr/lib/enigma2/python/Screens/SoftwareUpdate.py", line 104, in checkTraficLight
UnboundLocalError: local variable 'default' referenced before assignment