If you need further assistance with the update software, please read or post in this thread. Check the “Recovery Mode” box, then start the update. While holding those 2 buttons, then plug in the USB cable. If that happens, unplug the cable then press and hold the VOL- and VOL+ at the same time. However, it does come with an older version of the RLC / speedcam database so you’ll want to download the new GPS DB separately and load it in afterwards manually using the “Download Files” section of the update software.Īlso, some people have had issues getting the update to successfully complete, particularly failing while the update software shows “DSP Retry” in the update progress bar. The update software now has the ability to automatically download firmware 1.26 for you so you no longer have to download it off of Uniden’s website manually. Here’s a quick video about the new update software. It adds the ability to change settings from the software like I just talked about. In order to update your R4, you’ll want to download the latest version of Uniden’s update software.

The ability to change and even backup/restore settings from the new update software is a welcome improvement too. The rest of the changes are small behavioral changes, but nice nonetheless. Unfortunately it also looks like firmware 1.26 heavily neuters the R4’s K band detection range when set to City mode (or Auto City and driving above the Auto City speed threshold) so I would recommend sticking to Highway or Advanced mode only when running 1.26. Sometimes 1.26 managed longer detections, other times the previous 1.24 did better. However, initial test results are showing mixed results. The R4 was already top notch and so it’s cool to see them improve on this further. The biggest improvement in my mind is the detection range improvement. The detection range of K/Ka band has been improved.

It supports the user setting editing function which is available from the Uniden R Series Tool V2.08.

The candidate signals display modified to be arranged according to the priority.

The background noise when using earphones has been improved.

If radar is detected during the POI alert, both will be displayed on the OLED display.

Let’s go over the new changes, what’s gotten better, what’s gotten worse, as how to fix issues that may happen during the update process. Uniden has released firmware 1.26 for the Uniden R4.

Uniden firmware