2.0.4083
12/2015

This is the most recent version as of December 2015. I don't know what changed...

2.0.3848
10/2013

(Still the current update as of Fall 2015.)

You can display the S1+ version number by choosing the "i" icon.

• Includes a RECCO reflector inside
• Louder and more intuitive search sound
• Earlier fine search: Sound at 3.0m and display at 2.5m
• Sound indications (On, battery level, error during self test, error during partner check, Send, Search, flagging successful, flagging not possible)
• No more "locking of personalization"

1.2.3488
10/2011

It's a little confusing that the 10/2009 and 10/2011 S1 updates both display the version number as 2.1 when you turn on the device. However, if you choose the "i" icon, this version will display as 1.2.3488.

• You now cancel a previously suppressed (i.e., marked) transmitter during a multiple burial by pressing and holding the OK button for two seconds. Previous versions would cancel the suppressed transmitters with a quick press of the OK button. This change prevents you from accidentally canceling the previously suppressed transmitters.
• You can activate a new "deep burial" function by pressing the OK button when you are between 3 and 7 meters from the transmitter. This causes the S1 to display the " circular illustration" sooner.
• You can now personalize the start-up screen with your name, address, phone number, etc. That's handy in case you lose your transceiver (the Barryvox S and Pulse also allow the startup screen to be personalized).

1.2.3237
10/2009

It's a little confusing that the 10/2009 and 10/2011 S1 updates both display the version number as 2.1 when you turn on the device. However, if you choose the "i" icon, this version will display as 1.2.3237.

• Faster display indication of the buried victims after switching to LOCATION by reducing the message "STOP-hand"
• Protection of the "MENU button" against unintentional operation (press and hold the MENU button for more than 2 seconds to call up the "MENU" function).
• Optimized sensitivity for the indication "transmitter is located in front / in the rear" (180°-indication)
• New hold function (inclination measurement)
• Further enhancement of accuracy
  • Precise localization even of old and defective transmitters with frequency deviations of more than +-80 Hz
  • Optimization and refinement of self test (transmitter, receiver,
    magnet sensors and battery capacity)

2.0
09/2008

• Improved self-test
• Improved 4+ (multi-burial) function
• Automatic deep burial detection
• UP-BOX
• New user interface
  • Further enhanced MENU
  • New direction indication
• Enhanced liability and stability
  • Resistance interference against electronic sources (radio, cell phones, cable railways, etc)

1.0
08/2007

• New case
• New switch ON/ OFF
• New 4+ function
• New update capability
• New MENU
• New direction indication
• Enhanced liability and stability
  • Compass calibration
  • Improved resistance against electrical and atmospheric interference
  • Receiver parameters (detection of transmitters with a period as short as 500ms and as long as 1350ms)