I am using a Nokia C6-00 phone with firmware / Software Version v 40.0.021 , Software version date 17-05-11 and I tried the latest version of your software: Boldbeast Nokia Call Recorder 2.80.
Well, although I found your software very very good, I observe one big problem: it is not complete beeping free... To my tests both parties (mostly the other part) can hear quite loudly beep at the first ~16 seconds and this beep repeated almost every 2 minutes (e.x. at 2:16. 4:06 e.t.c.). Do you know how can suppress these very annoying beeps???
Thanks for your answer.