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Some devices supported by libsigrok need a firmware to be uploaded before the device can be used.

Getting non-distributable firmware files

Most firmware files are non-free and we have no permission to (re-)distribute them.

For these devices, please check the respective device wiki page (see Supported hardware for the full list). Usually there are instructions how to extract the firmware file(s) from vendor software, vendor webpages, from USB logs, or using other means.

Getting distributable firmware files

For some (but not all) devices there are publically available and redistributable firmware files in the sigrok-firmware git repository (i.e., the vendor was kind enough to allow redistribution):

$ git clone git://

In order to install the firmware files:

$ cd sigrok-firmware
$ ./
$ ./configure
$ make
$ make install (as root or using sudo, if needed)

Getting open-source firmware files

For Cypress FX2 based logic analyzers (and certain other FX2-based devices), we have the fx2lafw firmware (GPL'd) which you can use.

See the fx2lafw page for details.