This firmware update is for ESP based printers only. 


******************** NOTE ***********************

The AC adaptor specfication has changed with this 
release. The new Adapter spec is 10vdc 18 watts
2.1mm id, center positive. 

Using the 12vdc adaptor can cause the unit to 
overheat.

*************************************************


New features in the 3.4.1 release:

1. Alpha Numeric (DIANA+) pad printing
   We added Alpha numeric pad printing to the firmware. 
   Why, why not?  Makes using reciprocal OTPs easer to use
   because you don't have to write out numbers if you don't want
   to and it adds additional complexity to the encrypted message.
   Codex and instructions for using are included.

2. Changing Pad mode does not require power cycling the unit.
   Press and hold the Size button for 500ms or longer and release to cycle
   through pad modes. 

   Numeric mode - Size LED is lit continously.
   Alpha (DIANA) - Size LED blinks slowly.
   Alpha Numeric (DIANA+) Size LED blinks fast.

3. Pad stacking.
   Pad stacking is the ability to generate up to 10 pads
   of any type sequentially and then print them all at the 
   same time. If you are printing multiple pads this will save 
   lots of time. To activate Pad Stacking press and hold the
   Generate button for 500ms then release it. All of the LEDs
   on the unit will blink twice when pad stacking is active. 
   To go back to single pad mode repeat the keypress.  All the
   LEDs will blink once.

4. You can print a Codex/Translation table at any time not, there
   does not need to be an pad generated.  If you are printing 
   Pad and Codex together with pad stacking active, a correct codex
   will print for each pad type. So if you generate all three types 
   and them print them you will get 3 different Codex/Translation 
   tables.