It is known that Odeon in 1924 and Columbia in 1931 have set up recording studios in Kaunas, Lithuania. And when Lithuanian artists recorded for other labels, they had to travel abroad to record something. Homocord certainly never had a recording studio in Lithuania, so I think Lithuanian "Li" series records were recorded in Berlin.
You are probably right, but the Lithuanian Homocord recordings could be made in Kaunas or Riga as well. Technicians used to travel to make recordings, and as there are more than one Lithuanian artist on Homocord at this time, I think it is possible that the recordings can be made at a different place than Berlin.