Scanner 101 – Installing New Firmware for the BC125AT

Firmware Update
Download Firmware Update 1.02.05 (April 26, 2012)

This update makes the following changes:

  • Update the frequency steps in the VHF band to match the latest FCC Narrowbanding band plan.
  • Change the opening screen to include the current firmware version.
  • Apply a one-time routine to convert the memory image of existing channels to the new format required by the narrowbanding change.
  • Change how Marine channels are displayed during service search.
  • Fixed a bug that could cause scanning/reception to stop with certain combinations of Close Call and other features selected.

Directions using Internet Explorer and Windows7 as the operating system

Step 1
Download the Firmware loader for the BC125AT – Download here

Step 2
When download prompt pops up select “Open”
(this will take a few minutes to download)

Step 3
A window will pop up select BC_VUP_V3_00_01 folder

Step 4
Select Setup_BC_VUP.msi and then click run

Step 5
Click close on the Installation Complete window

Step 6
Open the Firmware loader in programs under Uniden , then BC_VUP3

Step 7
When software opens a “Select Model” window should appear. As seen in the photo bellow.
Click Next


Step 8

At this point you should have your Uniden BC125At turn on and connected to the PC via the data/power cable. Once this is done Click “OK” (Note: Uniden BC125AT drivers must be installed – Click here for directions)


Step 9

Click “Auto Detect”, when the comport is detected then click “Next”



Step 10
Click read and then click “Start”


Step 11

It will take about 3 minutes for the new firmware to be written to your BC125AT Scanner. Once you see the screen bellow your firmware update is complete.

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