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Generation 2 and generation 3 technology stacks share the same firmware but with different VIDs/PIDs.

Using Cypress firmware update tools with generation 2 modules does require a recovery boot, in order to force enumeration as Cypress USB Generic Driver.

On the other side, using Cypress firmware update tools with generation 3 modules may not require a recovery boot (if a Generation 3 reference firmware is running on USB FX2 microcontroller), but only an update boot. This is possible because the original Cypress USB Generic Driver (in case of a recovery boot) and the Trenz Electronic USB FX2 device driver ( in case of a regular boot) are both Cypress driver. Trenz Electronic USB FX2 driver derives from the original Cypress USB Generic Driver.

The firmware update procedure is similar for both generations. The following table summarizes the main differences. See also this video play lists for Cypress recovery boot and this page for OpenFutNet recovery boot.

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(1) The TE USB FX2 module (in recovery boot) is served by the Cypress USB Generic Driver; this driver allows Cypress firmware update tools (Cypress Console, Cypress Control Center) and OpenFutNet to work with the Cypress EZ-USB FX2 microcontroller on the module.
(2) The EEPROM switch connect (enable)/disconnect (disable) the connection between 
(3) EEPROM connection disabled when TE USB FX2 module turned on, then EEPROM connection enabled when TE USB FX2 module is inserted in the USB port of the computer (aka plugged in, aka attached)
(4) EEPROM connection enabled when TE USB FX2 module turned on, then EEPROM connection enabled when TE USB FX2 module is inserted in the USB port of the computer (aka plugged in, aka attached)   

 

Note
EEPROM connection shall always be enabled during EEPROM programming.