This site contains backup information for the i-Telex Firmware written by Fred Sonnenrein  as used in the ISP programming procedure. There are four categories of Firmware.

Alpha / Beta / Stab  for the interface boards towards the teleprinters

 Ethernet for the ethernet interface board.

Attention: 

Many of these  files are customized for personal use only, but feel free to use them.

• Alpha       Version contains the last  working version of each Firmware.
• Beta         Version contains the actual beta release of a Firmware to be tested.
  
• Stab         Version contains the last stable working version of each Firmware.
  
• Ethernet   contains a row of working releases with progressive numbering as ZIP package.
  

Please consult the manual before attempting to use ISP Programming.

ISP Programming uses the Alpha, Beta and Stab files.

You need a special flat cable for that purpose (see the manual)

To program the Ethernet board you need a PC with a serial port and a null-modem cable.