Hi Marcus,
Appreciate your response!

When I use my Linux PC as host, it also has the same issue, so I tried to
implement your suggestion in both MAC and the linux pc.
In both the cases, when I tried to downgrade the UHD image, it says
Checksum failure :

*shashi@shashi-All-Series /usr/share/gnuradio/examples/digital/ofdm $ sudo
/usr/lib/uhd/utils/uhd_images_downloader.py -f
"uhd-images_003.009.002-release.zip"*
*Images destination:      /usr/share/uhd/images*
*Downloading images from:
http://files.ettus.com/binaries/images/uhd-images_003.009.002-release.zip
<https://mailtrack.io/trace/link/6a8bf4eab3268e52df5eef639626f3199351dbde?url=http%3A%2F%2Ffiles.ettus.com%2Fbinaries%2Fimages%2Fuhd-images_003.009.002-release.zip&userId=1883625&signature=3c934c9b2c520d7b>*
*Downloading images to:   /tmp/tmpLtTlfs/uhd-images_003.009.002-release.zip*
*26296 kB / 26296 kB (100%)*
*Checksum of downloaded file is not correct (not installing - see options
to override)*
*Expected:   8e6e5edab697fa7e3c63c612ba6f79f5*
*Calculated: 37081e1e73004bd9e74d7e5b6293fd39*
*Please try downloading again.*
*If the problem persists, please email the output to: supp...@ettus.com
<supp...@ettus.com>*
*shashi@shashi-All-Series /usr/share/gnuradio/examples/digital/ofdm $ *

Do you think its expected behavior since the gnuradio version could be not
compatible with this downgraded one?

Kind Regards,

*Mahesh Jena*
Mob: +91-9717-999-451
www.pretlist.com
<https://mailtrack.io/trace/link/3927337a2f2ea7406eea16666b779456c037e37a?url=http%3A%2F%2Fwww.pretlist.com%2F&userId=1883625&signature=b33d2946d4d4b783>


On Fri, Feb 2, 2018 at 11:04 PM, Marcus D. Leech via USRP-users <
usrp-users@lists.ettus.com> wrote:

> On 02/02/2018 01:32 AM, Mahesh Jena via USRP-users wrote:
>
> Hi All,
>
> I have 2 USRP E312 devices, out of which one device is showing
> incompatible  FPGA issue with following error:
>
> *uhd_usrp_probe --args "addr=192.168.1.187"*
>
> *Mac OS; Clang version 9.0.0 (clang-900.0.39.2); Boost_106501;
> UHD_003.010.002.000-MacPorts-Release*
>
>
> *-- Detecting internal GPS *
>
> *UHD Error:*
>
> *    An error occured making GPSDd interface: RuntimeError: Failed to
> connect to gpsd: can't connect to host/port pair*
>
> *Initializing core control...*
>
> *-- Performing register loopback test... pass*
>
> *Error: RuntimeError: Expected FPGA compatibility number 16.x, but got
> 14.0:*
>
> *The FPGA build is not compatible with the host code build.*
>
> *Please run:*
>
>
> * "/opt/local/lib/uhd/utils/uhd_images_downloader.py"*
>
> However, the other device is working as expected.
> Both the devices have UHD image: *UHD_003.009.002-0-unknown*
>
> Can you please help me with figuring out how to solve the issue with this
> device?
>
> Thanks in advance!
>
> Kind Regards,
>
>
> *Mahesh  *
>
> This looks like you're using Network Mode with your E312 from a Mac.  The
> version of UHD on your host machine and E3xx MUST be the same when
>   using network mode.
>
> If you are going to use network mode with your E3xx (with the proviso that
> network mode is useful only for check-out and low-bandwidth testing), then
>   downgrade the version of UHD on your Mac to match that on the E312.
>
>
>
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>
>

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