Recording to USB drive not working

[ctsmetrony]

@complex1

Yes, top is:

#!version:1.0.0.1

### This file is the exported MAC-all.cfg.

I edited the .cfg, entered the linekey.3 as follows in the linekey section and, importing it to the phone, it took those edits:
...
linekey.2.line = 1
linekey.3.label = RECORD
linekey.3.line = 0
linekey.3.type = 25
linekey.4.label = SP 1
...

THANKS