SamyGO

OK, I did it! You were right SamygoPVR works fine, but not all versions. First, I encountered the same problem with the oldest version I had but after that I've got to know newer version of SamygoPVR calls different functions to perform recording. So I decided to implement the same functions in PVR+ 4.4. First tests show recording on NFS share and USB stick work well. Thank you and thank the author of SamygoPVR! (sorcerer1) Expect PVR+ 4.4 quite soon here on this forum.

Perfect! It is a pleasure having been able to give you some hints.
Thank you very much for this great work! I'm looking forward to using PVR+ 4.4!

OK, PVR+ 4.4 is ready.