2020 ORP with Software version 1047
iPhone 11

After the update, calls are clear on my end. CarPlay and Bluetooth calls from where I'm sitting sound just fine. No complaints.

On the other side of the call it's a different story. Callers or recipients complain of an echo on their end. They can hear themselves talking. Makes it difficult to have a conversation even if it doesn't effect my side of the call. I've experienced it myself calling my phone from my office land line and other cell phones. I can hear the echo.

This is happening on CarPlay and Bluetooth calls.

I've tried:
Adjusting the iPhone bluetooth volume all the way up
Adjusting the iPhone bluetooth volume all the way down
Adjusting the ln call volume settings up and down through the head unit.
unpairing/pairing the phone before and after updates
4 different cables and 2 different usb adapters
Putting the phone in my pocket during calls
Muting/unmuting the call in progress

Nothing I've tried has solved or helped the echo issue. I've read post after post over the internet about this issue with Toyota and bluetooth echo across many models, not just the 4runner. I don't know what else to do to fix this problem but it seems every service adviser I've mentioned it to shrugs their shoulders and acts like they've never heard of such a problem. Hell, I had to show them the screenshot of the TSB just to get them to install the software update.

Very frustrating.