La Power Bluetooth A2DP USB adapter








I have now made further measurements with a voltmeter. I used a 12V power supply to try out the LaPower. When I put the plug into the Lapower, the red LED lit up briefly (0.5sec?). The LED went off again immediately. Only when the plug was removed, the LED went on again briefly. When I press "RESET", the LED lights up briefly. It goes out again directly.
I have measured the power consumption of the LaPower, it seems to be too low. In the first second almost 9 milliamperes are used. I think this is too little. In the second second about 3 milliamperes are used.
The question I have is: firmware or hardware. How do I update the firmware on the Laboer and where do I get the firmware from?
Thank you for your ideas!! MUCH THANKS!




I have measured the power consumption of the LaPower, it seems to be too low. In the first second almost 9 milliamperes are used. I think this is too little. In the second second about 3 milliamperes are used.The question I have is: firmware or hardware. How do I update the firmware on the Laboer and where do I get the firmware from?Thank you for your ideas!! MUCH THANKS!
Firmware update...As far as I know there are NO firmware updates for the La Power / Mr. 12Volt device.
What has been done is to update the firmware for your comand. So I think the seller is talking about you updating the firmware for the comand (head unit). For that you need the update CD for your specific comand. The firmware update comes on the same CD with the maps update. There are bootlegs sold on Fleabay and there are sites you can download for free (beware!) some forum members may be able to help to get you the files. Lastly is your local Stealer and the MB website. If you search the net and you tube there are instructions on how to do it.
But again....save your self some headaches and have the seller replace the unit...

Firmware update...As far as I know there are NO firmware updates for the La Power / Mr. 12Volt device.
What has been done is to update the firmware for your comand. So I think the seller is talking about you updating the firmware for the comand (head unit). For that you need the update CD for your specific comand. The firmware update comes on the same CD with the maps update. There are bootlegs sold on Fleabay and there are sites you can download for free (beware!) some forum members may be able to help to get you the files. Lastly is your local Stealer and the MB website. If you search the net and you tube there are instructions on how to do it.
But again....save your self some headaches and have the seller replace the unit...

thank you for your Ideas. I stay in contact with the seller. I made an Update of my Command (2015)... This should not be an Problem. I don’t want to open the devices I hope he send me a new one. I will give you an update
.. I have good news... The LaPower is now working... It was an firmware issue. I could provide the Files to Update the firmware for the Mercedes Version..
One Problem is not fixed.. I can’t use the Telephone Function of my Command. I unplugged the VISEEO and then the Command won’t recognize the LaPower as an Mobile Phone.. Any ideas?
But I have to add that I did not remove the Telephone control unit under the trunk.. I bought the MOST-Bypass but I didn’t use it today,
I try more than 99 Tracks on a flash drive and it works fine. The Command Displays only the first 32 Tracks then the Display shows „Page 01->02“ and then you see your other Tracks. I will test it in the next days with 200 Tracks.




..I have good news... The LaPower is now working... It was an firmware issue. I could provide the Files to Update the firmware for the Mercedes Version..
One Problem is not fixed.. I can’t use the Telephone Function of my Command. I unplugged the VISEEO and then the Command won’t recognize the LaPower as an Mobile Phone.. Any ideas?
But I have to add that I did not remove the Telephone control unit under the trunk.. I bought the MOST-Bypass but I didn’t use it today,I try more than 99 Tracks on a flash drive and it works fine. The Command Displays only the first 32 Tracks then the Display shows „Page 01->02“ and then you see your other Tracks. I will test it in the next days with 200 Tracks.
before I Installed the LAPOWER I use an VISEEO... For Handsfree Calling... In my Car everything is activated. CD-Changer, Handsfree Calling, and Steering Controls.
Now I removed the VISEOO but the Command won’t recognize the LAPOWER as Telephone.. But I didn’t remove the Telephone Control Unit. With the VISEOO the Command sucks at the Phone Screen. Without the VISEOO the Command said : „No Phone is installed“...
you could update the firmware of the LAPOWER easily... If you have Problems with your LaPOWER follow my Guide... I won’t guarantee that my guide is correct. If your device is broken after the Update it is NOT MY FAULT!
IMPORTANT: MICRO-SD MUST be formatted as FAT32 and BLANK!
1) save to SD card (file name cannot be changed) -> LP1603MB_Benz_App_v2.1.bin
2) Remove the power cord and the FIBER-Connector from the Lapower module
3) Insert the SD card into the slot below the optical input.
4) Now connect the power cord. The update will start automatically. (During the update, the red and blue light will flash together many times).
5) If the update is successful, the blue LED will be displayed permanently (if the update is not successful, the red LED will be displayed permanently).
Repeat the process again if the first time is not successful.
6) After updating, remove the POWER-CORD and THEN the SD card.
Last edited by DerPicknicker; Jun 4, 2020 at 03:46 AM.
The Best of Mercedes & AMG




Now we know there is a firmware update for Mr. 12volt / La Power (LP1603). But the question that remains for me is; why and when should you update the firmware. That is, what are the signs and symptoms (besides what your head unit was doing) that points to the need to upgrade the firmware?
Now we know there is a firmware update for Mr. 12volt / La Power (LP1603). But the question that remains for me is; why and when should you update the firmware. That is, what are the signs and symptoms (besides what your head unit was doing) that points to the need to upgrade the firmware?
Later on I will bypass the Phone Controll Unit in the Trunk of my car.
..IMPORTANT FOR W203 :
I figure out why the phone won’t work. Under the Trunk is the Control Unit for the Phone-Antennas (VISEEO used them).. I have to remove the Power Cord of it and bypass it with an Most-Loop. Now everything works fine.
I could also test a USB-Drive with more than one Folder. The Maximum Folder number is 5.. In every Folder you could copy more than 300 Songs! I test it with around 350 Songs and its stable without Bugs.
The Songs are Grouped into 32 Songs. If I reached the 32 Songs the Command said :“Page 01->02“ then comes the new 32 Songs and after that songs “Page 02->03“ is displayed..
I wrote to the Seller and ask him that i am interested to see the Firmware and I also ask him to provide me an Update to use the Steering Wheels buttons or a defined button at the Command for enabling Siri or Google.
Hope its Helpful for other People..
Last edited by DerPicknicker; Jun 4, 2020 at 01:51 PM.
before I Installed the LAPOWER I use an VISEEO... For Handsfree Calling... In my Car everything is activated. CD-Changer, Handsfree Calling, and Steering Controls.
Now I removed the VISEOO but the Command won’t recognize the LAPOWER as Telephone.. But I didn’t remove the Telephone Control Unit. With the VISEOO the Command sucks at the Phone Screen. Without the VISEOO the Command said : „No Phone is installed“...
you could update the firmware of the LAPOWER easily... If you have Problems with your LaPOWER follow my Guide... I won’t guarantee that my guide is correct. If your device is broken after the Update it is NOT MY FAULT!
IMPORTANT: MICRO-SD MUST be formatted as FAT32 and BLANK!
1) save to SD card (file name cannot be changed) -> Attachment 425357
2) Remove the power cord and the FIBER-Connector from the Lapower module
3) Insert the SD card into the slot below the optical input.
4) Now connect the power cord. The update will start automatically. (During the update, the red and blue light will flash together many times).
5) If the update is successful, the blue LED will be displayed permanently (if the update is not successful, the red LED will be displayed permanently).
Repeat the process again if the first time is not successful.
6) After updating, remove the POWER-CORD and THEN the SD card.




@Pmarino Sadly I have no answer yet. I will write tomorrow again. Activating Siri or Google would BE AWESOME!!
track-Name. The Command shows first the Wrong name but after 2 sec the correct name is in the display. I checked the Names with Shazam.
The other Folders has around 50 Tracks and the Command don’t need that Time to display the right name. Try the Firmware-Update it could fix your issue.
TITLE-MIX, CD-MIX ... Worked fine and I didnt have any issues. But the Problem is that the Command will only see the first 32 Tracks per Folder. You could storage more than that but only play them manually.
To Change between Sources is quite Simple.. You have to be in the CDC-Mode. The 6th-CD is the Source-Changer .. If you press the „6“ of your Buttons at the Command you will change the Input of the LaPower. If no SD-Card or AUX-Cable is plugged into the Module the Lapower will activate the Bluetooth-Audio..
The Command thinks the 6th CD is „real“ and triggers the LaPower to change the input. But it is only a Placeholder due a limitation of the command. Overall the LAPOWER is great and the Sound is fantastic you can’t believe how good the HARMAN BECKER-Sound-System is.
Last edited by DerPicknicker; Jun 7, 2020 at 08:30 AM.




Mr. Derpicknicker: Can you please list step by step how to switch source on the Lapower device?? I was on the CDC page listening to the music on SD card (I have 3 folders on SD card), if I pressed #6 on the Comand (try to switch to USB or bluetooth), it said "Disc 6 not available"!!!. I have not find an effective way to swicth. Or maybe you can record a short youtube of how to switch. Thank you
Mr. Derpicknicker: Can you please list step by step how to switch source on the Lapower device?? I was on the CDC page listening to the music on SD card (I have 3 folders on SD card), if I pressed #6 on the Comand (try to switch to USB or bluetooth), it said "Disc 6 not available"!!!. I have not find an effective way to swicth. Or maybe you can record a short youtube of how to switch. Thank you
i made a short Video ... I hope you could see that switching between sources is quite easy... Here Is the Link : https://drive.google.com/file/d/1yNo...ew?usp=sharing
Also I made a small PDF for updating the firmware. You will find the Firmware and the PDF as an attachment.
Last edited by DerPicknicker; Jun 8, 2020 at 11:52 AM.
i made a short Video ... I hope you could see that switching between sources is quite easy... Here Is the Link : https://drive.google.com/file/d/1yNo...ew?usp=sharing
Also I made a small PDF for updating the firmware. You will find the Firmware and the PDF as an attachment.





