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I missed this, but back in October Garmin released G1000 NXi System Software Version 3643.06 under SB 22093.

https://support.garmin.com/en-US/avi...E0Z2CUJBKSy16/

SB 22093

This service bulletin provides notification for System Software Version 3643.06 and provides the following:

• GTX™ 345(D)R ADS-B system software update to version 3.14 for improved 1090ES ADS-B/ ADS-R/TIS-B message reception processing (applicable to EMB-500 only)
• Audio configuration update to provide improved audio output in support of the optional CVR (use and approval are the responsibility of the installer); refer also to Service Bulletin 22092.
• New option to enable ATC audio to the cabin (GMA™ 1360D installations)
• Configuration update to correct brake pressure parameter display on the OEM Diagnostics page
• Configuration update to allow changes to the default page navigation timeout setting
• Emergency Descent Mode (EDM) improvement to switch transponder code to 7700 with EDM activation
• EDM configuration updated to set airspeed reference upper limit to 275 knots (EMB-500) and 250 knots (EMB-505)

STC Service Bulletin 22093 may be incorporated at the owner’s discretion.

At the same time they released also SB 22092, which is a mandatory service bulletin for NXi aircraft with the new GMA 1360D and a CVR installed.

https://support.garmin.com/en-US/avi...g9ffmP4C0g7CA/

SB 22092

Cross-side audio is not provided by GMA™ #1 to the optional third-party CVR. This service bulletin approves G1000 System Software Version 3643.06 as a required corrective action for this CVR interface non-compliance issue.

This Service Bulletin is warranty reimbursable with a deadline of October 31, 2023.