# Not responding B100

**URL:** <https://www.ruby-forum.com/t/not-responding-b100/246219>\
**Category:** GNU Radio\
**Created:** [September 10, 2013, 1:26pm UTC](https://www.ruby-forum.com/t/not-responding-b100/246219 "2013-09-10T13:26:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Rafa\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\
**Post date:** [September 10, 2013, 1:26pm UTC](https://www.ruby-forum.com/t/not-responding-b100/246219/1 "2013-09-10T13:26:56Z")

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Hi List,

My B100 suddenly stopped responding to UHD init.  
It appears that the USB interface actually lost its ability to identify  
as  
a device.  
Here below, you can find the output of the fedora “messages” log for  
the Broken B100 as well as for a working one.

Could this be solved by re-programming the USB interface somehow?

my best regards

vince

* * *

Bricked B100

Sep 9 17:43:25 vince kernel: [293521.821638] usb 1-1.2: USB disconnect,  
device number 23  
Sep 9 17:43:28 vince kernel: [293524.558326] usb 1-1.2: new high-speed  
USB  
device number 25 using ehci\_hcd  
Sep 9 17:43:28 vince kernel: [293524.643549] usb 1-1.2: New USB device  
found, idVendor=0a00, idProduct=0002  
Sep 9 17:43:28 vince kernel: [293524.643554] usb 1-1.2: New USB device  
strings: Mfr=0, Product=0, SerialNumber=0  
Sep 9 17:43:28 vince mtp-probe: checking bus 1, device 25:  
“/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2”  
Sep 9 17:43:28 vince mtp-probe: bus: 1, device: 25 was not an MTP  
device

Good B100

Sep 9 17:43:28 vince mtp-probe: bus: 1, device: 25 was not an MTP  
device  
Sep 9 17:43:58 vince kernel: [293555.356431] usb 1-1.2: USB disconnect,  
device number 25  
Sep 9 17:44:17 vince kernel: [293573.964334] usb 1-1.2: new high-speed  
USB  
device number 26 using ehci\_hcd  
Sep 9 17:44:17 vince kernel: [293574.050317] usb 1-1.2: New USB device  
found, idVendor=2500, idProduct=0002  
Sep 9 17:44:17 vince kernel: [293574.050322] usb 1-1.2: New USB device  
strings: Mfr=1, Product=2, SerialNumber=6  
Sep 9 17:44:17 vince kernel: [293574.050326] usb 1-1.2: Product: USRP  
B1004  
Sep 9 17:44:17 vince kernel: [293574.050328] usb 1-1.2: Manufacturer:  
Ettus R. LLC  
Sep 9 17:44:17 vince kernel: [293574.050330] usb 1-1.2: SerialNumber:  
E8R10ZFB1  
Sep 9 17:44:17 vince mtp-probe: checking bus 1, device 26:  
“/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2”  
Sep 9 17:44:17 vince mtp-probe: bus: 1, device: 26 was not an MTP  
device  
Sep 9 17:44:49 vince kernel: [293606.298898] usb 1-1.2: USB disconnect,  
device number 26

---

<div class="post-metadata">

**Author:** ![Vincenzo\_P](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/e274bd/32.png) [@Vincenzo\_P](https://www.ruby-forum.com/u/Vincenzo_P)\
**Post date:** [May 16, 2014, 6:20pm UTC](https://www.ruby-forum.com/t/not-responding-b100/246219/2 "2014-05-16T18:20:16Z")

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Hi Tapiwa,

There should be object code for fixing the B100 USB interface in the UHD  
tree under /host/build/utils.

cmake compiled it for you when you built the whole UHD.

The bin file to use is fx2\_init\_eeprom.  
Use the --help option to get usage info.

You also need the suitable b100\_boot.bin and b100\_eeprom.bin  
to be flashed into the B100.

I’m actually having those but I’m not sure whether or not they’re  
the good version for your board revison.  
I’m actually haning no clue on the versioning of such files.  
Seeking advice from other list members on this.

Best

Vincenzo  
Il giorno 13/mag/2014 12:10, “Tapiwa Chiwewe” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
ha  
scritto: