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To update firmware on your HackRF you can use hackrf_spiflash from the hackrf package.
$ hackrf_spiflash -w hackrf_one_usb.bin
It is possible to use a USB Device Firmware Upgrade (DFU) method to load
firmware into RAM. This is normally only required to recover a device that has
had faulty firmware loaded, but it can also be useful for firmware developers.
For loading firmware into RAM with DFU you will need the dfu-util package installed:
$ sudo apt install dfu-util
To start up HackRF One in DFU mode, hold down the DFU button while powering it
on or while pressing and releasing the RESET button. Release the DFU button
after the 3V3 LED illuminates.
A .dfu file is built by default when building firmware. Alternatively you can
use a known good .dfu file from a release package. Load the firmware into RAM
with:
$ dfu-util --device 1fc9:000c --alt 0 --download hackrf_one_usb.dfu
Then use the hackrf_spiflash firmware update procedure above to write the
“.bin” firmware image to SPI flash.
Updating the CPLD
Older versions of HackRF firmware (prior to release 2021.03.1) require
an additional step to program a bitstream into the CPLD.
To update the CPLD image, first update the SPI flash firmware,
libhackrf, and hackrf-tools to the version you are installing. Then:
hackrf_cpldjtag -x firmware/cpld/sgpio_if/default.xsvf
After a few seconds, three LEDs should start blinking. This indicates
that the CPLD has been programmed successfully. Reset the HackRF
device by pressing the RESET button or by unplugging it and plugging
it back in.
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