How to change firmware for a device

[capslock118]

this is in relation to tv tuners; i am using kernel 3.2.27

I followed the linuxtv guide for my tuner (here) and the device dropdown in tvheadend is not showing the device.

so i look at syslog and dmesg and I am getting a bunch of errors with "cx231xx" such as, but not limited to:

Code: Select all

cx231xx #1: UsbInterface::sendCommand, failed with status --71
cx231xx #1: cx231xx_dev_init: Failed to set Power - errCode [-71]!
cx231xx #1: cx231xx_init_dev: cx231xx_i2c_register - errCode [-71]!
cx231xx: probe of 1-1.2:1.1 failed with error -71

But the firmware linuxtv reports is xc5000, so I am going on a hunch that the machine is using the wrong firmware.

is there a way to confirm which firmware is being used and, if it is the wrong firmware, how do I tell the machine to use the right one?