Betaflight has officially released the final version of Betaflight 3.2. Here’s the link for detailed information: https://github.com/betaflight/betaflight/releases/tag/v3.2.0.
To connect BLHeli_32 ESC to configurator BLHelisuite32 via FC passthrough, you will need to download the Betaflight 3.2 and the latest BLHeliSuite for BLHeli_32. All the necessary files can be found here.
The new Betaflight 3.2 version brings a lot of improvements, new features and more supported flight controllers. Sergey of DroneHiTech.com has summarized some of the changes on his blog HERE. One of the improvements is BLHeli32 ESC telemetry. Previous version of Betaflight supported ESC telemetry data only from KISS24 ESCs. With the current Betaflight 3.2 you will be able to get telemetry data from some BLHeli32 ESC (like Betaflight BLHeli32 ESC) and show it on your OSD.