How to Update RETEVIS Ailunce HA2 Firmware with Phone: Bluetooth OTA Update Guide

Keeping your radio's firmware up to date matters more than most operators think. Updating the radio firmware allows you to use the latest Bluetooth version for smoother connections and add new features — all without touching a single cable. In this guide, you'll learn exactly how to run a bluetooth OTA update on the RETEVIS Ailunce HA2 using a free app on Android or iOS.

What You Need Before You Start

• A RETEVIS Ailunce HA2 ham radio
• A smartphone (Android 8.0 or later, or an iPhone)
• The RETEVIS BT OTA app (free download — details below)
• Both your radio and phone Bluetooth turned on

Step 1: Download the Retevis BT OTA App

You need the RETEVIS BT OTA app to perform bluetooth OTA update for your RETEVIS Ailunce HA2. Download the correct version for your phone below — the app is free and designed specifically for RETEVIS devices.

Android Version

Find the download link in the YouTube video description (or click here). Tap the link and look for Retevis-OTA (Bluetooth Upgrade Tool) — this is the Bluetooth upgrade tool for Android. Download and install the APK. You may need to allow installs from unknown sources in your phone settings.

This is a radio bluetooth update OTA Android APK — not available on the Play Store, so the direct download link is required. It works for android 6.0 radio bluetooth update and newer Android versions.

iOS Version (iPhone / iPad)

The iOS version uses Apple's TestFlight system — a common method for distributing iOS apps that haven't yet been published on the App Store, including ham radio programming software. Follow these steps exactly:

1. Tap this link on your iPhone/iPad to open it. If you’re on a computer, send the link to your iPhone/iPad first.
2. Tap the first link to install TestFlight from the Apple App Store.
3. Once TestFlight is installed, go back to that page and tap the second link to install the Retevis BT OTA app through TestFlight.

This process works for device firmware update iphone and device firmware update iPad, ensuring full compatibility with your RETEVIS Ailunce HA2.

Step 2: Prepare Your Radio and Phone

1. Turn on your RETEVIS Ailunce HA2.
2. Enable Bluetooth on the radio.
3. Enable Bluetooth on your phone.

Make sure both devices are within close range of each other — about 1 meter is ideal for a stable bluetooth OTA update. This is required for radio wireless programming and prevents connection drops during the update.

Step 3: Connect and Run the Firmware Update

After downloading the RETEVIS BT OTA app and preparing your devices, follow these steps to complete the OTA DFU (Over-The-Air Device Firmware Upgrade) for your RETEVIS Ailunce HA2. These steps match the tutorial video exactly.

1. Open the Retevis BT OTA app on your phone.
2. The app will scan for nearby devices. Find and tap "RETEVIS Ailunce HA2" in the list.
3. Tap "Update" at the bottom of the screen.

   

4. An Update File will appear. Tap "Update" again to start the radio firmware upgrade.
5. Wait for the process to finish. When it's done, your phone screen will show: "Update is complete."

Do not close the app or move away from the radio while the update is running. This can cause the update to fail or corrupt the firmware.

Step 4: Verify the New Bluetooth Version

Once the update is done, you can confirm the new firmware version directly on the RETEVIS Ailunce HA2 to ensure the device firmware update was successful:

1. Press "Menu" on the radio.
2. Go to "Radio" → "Radio Information."
3. Find "BT Ver" — this shows your current Bluetooth firmware version.

If the version number has changed from what it was before, the bluetooth OTA update was successful.

Key Notes for Successful Firmware Update

• Keep your RETEVIS Ailunce HA2 and phone fully charged during the update. A dead battery mid-process can cause the update to fail.
• Ensure no other bluetooth devices are connected to your phone. This prevents interference and fixes issues where radio keeps dropping bluetooth after apple update.
• The app works for bluetooth app update for android chinese radio and iOS, specifically designed for RETEVIS devices like the Ailunce HA2.
• This method is the best way to update old radio to bluetooth for RETEVIS Ailunce HA2 users, no cables or computer needed.

Why Firmware Updates Matter

Device firmware update improves your RETEVIS Ailunce HA2's performance, fixes bugs, and ensures stable bluetooth connectivity. Regular updates extend the radio's lifespan and keep it compatible with new features. This OTA upgrade using android app or iOS app makes updates easy, even for those new.

Final Check

If you're asking, "is there a way to update bluetooth radio?" — this guide answers that question for RETEVIS Ailunce HA2 users. The process is cable-free, straightforward, and works with both Android and iOS phones. Save this guide for future firmware update download and update needs.