You need to save and extract the BC_VUP_3_03_00 firmware updater and uniden_usbser driver for your scanner. Run the setup application to install the firmware updater on your computer. You will need to install the driver to be able to communicate with the scanner.
BCD325P2 Firmware Updates
All firmware updates are applied using BC_VUP3. Download BC_VUP3 Firmware Updater for DMA Scanners, unzip the file, then run the installer (Setup_BC_VUP.msi) to install this utility. Then, run the utility and follow the on-screen prompts to select the scanner model and firmware version to apply.
Firmware History Version 1.09.12 Released 8/12/21
and that is from the uniden page. >>>>> If your scanner's serial number starts with 379B, be sure to use ONLY this (or newer) version <<<<<
If your scanner's serial number starts with 379Z, you can update to this (or newer) versions.