It is a Cypress firmware tool that cannot be used to download bitstream. It can be used for
- recovery boot (it doesn't require that a firmware is already downloaded on the USB FX2 microcontroller)
- upgrade a Genetarion3 firmware version (it does require that a Generation 3 firmware is already downloaded on the USB FX2 microcontroller)
For actual procedures see here, here and here.
Overview
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