Android · Play Store · Coming soon
Kyros BT Connect
Free check: does your Android head unit do Bluetooth A2DP audio? Find out now.
Stuck with aux-only sound on your aftermarket Android head unit? Kyros BT Connect checks, for free, whether your exact unit can stream real Bluetooth A2DP audio to your car's built-in Bluetooth radio — no aux cable, no hardware adapter, no wiring.
What the free Bluetooth A2DP check does
Kyros BT Connect runs a free compatibility check before you spend a dollar:
- Probes whether your head unit's Android build actually exposes the Bluetooth A2DP source role your car needs (many do, some don't, and this varies by chipset and ROM build even within the same head unit model)
- Discovers your car's Bluetooth radio and highlights it in plain language, instead of a raw list of cryptic Bluetooth names, so you know exactly what to pick when your car's screen asks you to add a device
- Pairs (bonds) with your car and verifies, for real, that the audio streaming service is present
- Runs a brief, real audio connection as proof it works, then disconnects, so you see actual evidence before you pay for anything
- Gives you a clear verdict: Compatible, Partial, or Blocked, with the reason why
Nothing is hidden and nothing runs without your say-so. The app explains what it's about to do before every step.
Free check, then unlock
The compatibility check itself is free and unlocks nothing on its own. If your unit checks out, a one-time in-app purchase unlocks the full connect feature: a guided pairing wizard tuned to your car's specific pairing flow, plus a persistent auto-reconnect watchdog so you don't have to re-pair every drive. You see real proof your unit works before you're asked to pay for anything. No subscription, ever.
Which Android head units and cars work
Kyros BT Connect is for Android-based aftermarket head units only (the kind that run the Google Play Store), not Linux- or WinCE-based units, which can't install Play Store apps at all. Check what your head unit runs before buying.
Proven today
BMW
Tested pairing an Android head unit's built-in Bluetooth radio directly to a BMW's factory Combox as an A2DP audio source, streaming real audio with zero extra hardware.
Not supported
Rockchip MTCx-family units
On these units the MCU, not Android, owns the Bluetooth stack, and there is no software path around that. The app will tell you plainly if your unit is a Rockchip MTCx and stop there rather than sell you something that can't work.
Coming soon
Audi & Mercedes-Benz
Audi (MMI 3G+, MIB1, MIB2: 2013 and newer) and Mercedes-Benz (NTG4.5 and NTG5: 2011 and newer) support is in development. Earlier Audi MMI 2G/3G and Mercedes NTG1 through NTG4 units are Bluetooth-calling-only on the factory side and are not expected to support this at all; the app will route you honestly to that reality rather than sell you a check that can't pass.
Aux-only head unit? Here's who this helps
If you searched for "car bluetooth pairing," "aux replacement," "A2DP source," "android head unit bluetooth audio," or "BMW bluetooth streaming" because your XTRONS, Joying, Dasaita, or similar Android head unit only plays audio over the aux cable, this app tells you in minutes whether your specific unit and car can do better, before you spend anything.
Why does my Android head unit only play sound over aux? Read the guide →
Privacy
Compatibility and crash reports are opt-in and shown to you before anything sends. Device and ROM facts only, no MAC address, IMEI, serial number, location, or account. Read the full policy for exact details.
Kyros BT Connect privacy policy →
Common questions
Can my XTRONS, Joying, or Dasaita head unit stream Bluetooth audio to my BMW?
Maybe — and that is exactly what the free check tells you. Many aftermarket Android head units can act as a Bluetooth A2DP audio source and pair straight to your car's factory Bluetooth (on BMW, the Combox), but some can't, and it varies by chipset and ROM build. Kyros BT Connect probes your specific unit and gives you a Compatible, Partial, or Blocked verdict before you pay anything.
Why does my Android head unit only play audio over the aux cable?
Because your unit is sending sound out its analog aux/RCA output instead of streaming it wirelessly as a Bluetooth A2DP source to the car's built-in radio. Whether your unit can do the wireless path at all depends on its Android build and chipset. The free check confirms which case you're in.
What is a Bluetooth A2DP source, and why does it matter here?
A2DP is the Bluetooth profile that carries stereo music. Your car's factory Bluetooth is an A2DP sink (it receives audio). To feed it wirelessly, your head unit has to act as an A2DP source (it sends audio). Not every Android head unit exposes that source role, so Kyros BT Connect checks for it directly.
Do I need an adapter, a cable, or any wiring?
No. If your unit passes the check, it pairs directly to your car's factory Bluetooth radio — no aux cable, no Bluetooth adapter, no extra hardware, no wiring.
Does this work on a BMW Combox?
Yes — BMW is the proven case today. Kyros BT Connect has been tested pairing an Android head unit's built-in Bluetooth radio directly to a BMW's factory Combox as an A2DP audio source, streaming real audio with zero extra hardware.
Will it work on a Rockchip MTCx head unit?
No. On Rockchip MTCx-family units the MCU, not Android, owns the Bluetooth stack, and there is no software path around that. The app detects this and tells you plainly rather than selling you something that can't work.
Does it work on Audi or Mercedes-Benz?
Not yet — support for Audi (MMI 3G+, MIB1, MIB2: 2013 and newer) and Mercedes-Benz (NTG4.5 and NTG5: 2011 and newer) is in development. Earlier Audi MMI 2G/3G and Mercedes NTG1 through NTG4 units are Bluetooth-calling-only on the factory side and aren't expected to support this at all.
What does it cost? Is there a subscription?
The compatibility check is free. If your unit passes, a one-time in-app purchase unlocks the guided pairing wizard and a persistent auto-reconnect watchdog. There is no subscription, ever.
Get it
Launching on the Google Play Store soon. Check back for the download link.
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