1.Broadband digital two way radio
2.DMR True2-slot dual time slot
3.Digital and analog compatible, smooth over
4.Digital signaling function
6.High sound quality
8.High/Low power switch
10.Digital mode supports the use of relays
11.Side buttons can be customized without changing the user`s operating habits
We constantly update the RT84 firmware to meet the needs of customers. You can download it and install the .exe file on your computer. https://www.retevis.com/resources-center
Step 1: Connect the RT84 and computer with RT84 programming cable
Step 2: Make sure your RT84 is in the DFU mode.
Press the top sidekey and PTT together, turn on the radio at the same time. we will see that the led is flashing red and green. It means the RT84 is in DFU mode.
Note: If the RT84 is not in the DFU mode before upgrading, you will can't upgrade successfully. Or will result white screen.
Step 3: Open the RT84 Firmware upgrade.
Step 4: Click the "Open file upgrade", then selcet the new firmware .bin file.
Step 5: Click the "Download file of upgrade", It will start to upgrade.
Step 6: After it show successful. unconnect the RT84 and computer. Reboot the RT84, we can check the current firmware version.
If you have any other questions, feel free to leave messages to us.