The only unit I've actually owned so far was the OZFLARM. It was
easily updated with Flarmtool. The pilot and glider info can be
changed, and the frequency could be selected for use in different
countries.
Any of the FLARMs that I have used will create an IGC file. Some
have full IGC certification for use on records, etc. On most, there is
no ENL recorded but some have an ENL option. They also output NMEA
data to a PDA or other flight display or computer.
There are various systems available, including "black box" types for
use with your PDA software (SeeYou, XCSoar, WinPilot, etc) or with
external display easily mounted in the panel. Some have USB
connections for downloading the log or updating firmware.
There is an audio module available for traffic alerts: "Traffic 1
o'clock 300' higher" etc.
Even in the USA I have seen LX8000 advertised for sale with internal
FLARM.
On the last day of a contest, one entry (a self-launcher) lost
communication with his GPS as he was warming up, couldn't fix it and
was going to scrub the day. I was running the grid... Had him close
the engine bay, taped and signed it, told him to take a tow. He used
the igc file from his (non-ENL) OZFLARM and won the day.
The one time my FLARM screamed at me unexpectedly, I was grateful
for the input:
Under a cloud street, head-on, within 200' horizontally and
vertically, high cruise speeds. Timely and accurate information.
Jim

Links...
Original Swiss FLARM:
http://www.flarm.com/

Butterfly Aero:
http://www.butterfly.aero/powerflarm/fly/

LX Avionics:
http://www.lxavionics.co.uk/power-flarm.htm

Triadis Speech Alert:
http://www.swiftavionics.com.au/prod...lert%20System/

One US dealer for PowerFLARM:
http://www.craggyaero.com/powerflarm.htm

One US dealer for LX:
http://www.cumulus-soaring.com/lx.htm#LX8000

Version 4 update details:
http://www.flarm.com/support/updates/index_en.html