How to install the RT3 & RT8 USB Driver
When we bought the RT3 & RT8 Radio, and when we want to set up our channel/Frequency. We will found, first we should install one Driver which can recognize our USB programming cable and let the Radio with PC synchronization.
Now let us to learn how to install the RT3 & RT8 USB Driver.
Step1. Download the RT3 & RT8 USB Driver from: https://www.retevis.com/resources-center/
Step2. Connection the programming cable with PC.
Step3. Right click ”My computer”→”Device Manager” → The Port(COM and LPT) 
Step4. Right click “Prolific USB-TO-Serial Comm Port (COM?)” → Open “Update Drive software” → “Browse the computer to find the driver software”
Step5. Find the “RT3 & RT8 USB Driver” → Click “Affirm” is ok.
After above step, then u can connect the Radio with programming cable, and programm at the RT3 or RT8 software.
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wont work is it because i am using usb cable from retevis 777
H777 cable cant be use on RT3/8. You need to use specific for RT3/8. http://www.retevis.com/original-usb-programming-cable-for-retevis-rt3-rt8-radio
None of those drivers work on WINDOWS 11 PRO. Where are the real drivers? URL please not silly broken links to Retevis site that has no software support on it at all.
You may check the RT3S driver
This DOES NOT WORK WITH WINDOWS 11 PRO
usb drivers not working with latest 6/2024 windows 10