PCM 4 updates - DIY

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Mar 29, 2026 | 05:40 PM

#16

sterz85

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Joined: Jun 2016

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From: VA

Quote:

Originally Posted by diverboy31

Anyone have a good source for remote coding? I was able to run the update but I cannot get to the GEM screen to enable full screen carplay. The real kick in the pants is i have no sound from my Bose. The alarms sound for park assist, however, NO media plays sound. I have the carplay screen, but when I play music I get no sound. When I try the FM radio, no sound. All of the options on the Bose sound menu are grayed out.

Which version did you install? Generally you want to install one that has AIO (All-In-One) because it doesn't update the BOSE drivers. I'm not sure if you can try loading an AIO version to restore the sound.

Mar 29, 2026 | 07:10 PM

#17

diverboy31

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Joined: Mar 2026

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Quote:

Originally Posted by sterz85

I used the package from MIB. I don't recall it being the AIO version.

Mar 29, 2026 | 07:19 PM

#18

sterz85

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From: VA

Quote:

Originally Posted by diverboy31

I used the package from MIB. I don't recall it being the AIO version.

I don't recall the instructions but did you make a back-up? Maybe you can flash the original version and that might bring back the sound. I recall reading on reddit someone lost the BOSE sound and had to go to the dealership for the solution. I think I was like an hour change for the PIWIS code change

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