After some stress-testing I found patched 3.64 almost fully functional!
As ricoreyes mentioned, grid intensity can’t be changed, which really doesn’t matter. Also I confirm what santus1983 noticed, buffer can’t be written to SD card. Actually I never managed to write SD with any firmware so it could be a problem with my card. Maybe it doesn’t support SPI or something like that. Anyway directory is created together with .xml file so I believe it’s memory card compatibility issue. There were a lot of this with DSO nano. I’m happy that at least I can write config, it’s useful to setup few profiles as peak hunting, TTL etc.
Finally we have working firmware 
Thank you again rimidalv007!