Hi Jerrid,

Your gnuradio is built against UHD 3.15 instead of UHD 4.0. You'll
probably need to rebuild gnuradio taking care to make sure to make sure
it doesn't use 3.15 when you do.

With regards to the compat numbers....

With uhd-3.15 I observed:
LD_LIBRARY_PATH=/opt/uhd-3.15/lib /opt/uhd-3.15/bin/uhd_image_loader --
args="type=x300,addr=192.168.40.2" --fpga-path /opt/uhd-
3.15/share/uhd/images/usrp_x3
10_fpga_XG.bit
# reset the device
LD_LIBRARY_PATH=/opt/uhd-3.15/lib /opt/uhd-3.15/bin/uhd_usrp_probe 2>&1
| fgrep "FPGA Version"
|   |   FPGA Version: 36.0

With uhd-4.0 I observed:
LD_LIBRARY_PATH=/opt/uhd-4.0/lib "/opt/uhd-4.0/bin/uhd_image_loader" --
args="type=x300,addr=192.168.40.2" --fpga-path /opt
/uhd-4.0/share/uhd/images/usrp_x310_fpga_XG.bit
#reset the device
LD_LIBRARY_PATH=/opt/uhd-4.0/lib /opt/uhd-4.0/bin/uhd_usrp_probe 2>&1 |
fgrep "FPGA Version"
|   |   FPGA Version: 38.0

Dustin

On Fri, 2020-11-13 at 20:48 +0000, Jerrid Plymale via USRP-users wrote:
> Hello All,
>  
> So I have been working on transitioning to using UHD 4.0 from 3.15,
> and I am running into a problem. I was able to get the software
> updated without issue, then I downloaded the new FPGA images using
> the uhd_image_downloader and updated the two USRP X310’s I am working
> with. After that I tried running one of my flowgraphs in GRC and I
> get the following: RuntimeError: Expected FPGA Compatibility number
> 36, but got 38. So do I need to update UHD again to a newer version,
> or is there a way I can install the older versions of the FPGA Image?
>  
> Best Regards,
>  
> Jerrid
> _______________________________________________
> USRP-users mailing list
> USRP-users@lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

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