FSC-BT691

JakeH

The documentation for the FSC-BT691 has the AT+SCAN command but I just get ERROR when I use it. Is there something I missing?

FAE_Gavin

JakeH The AT+SCAN error occurs because The FSC-BT691 runs Peripheral (Slave) firmware, which doesn't support active scanning.
This module has two firmware types:

Peripheral (Slave): Cannot initiate connections
Central (Master): SupportsAT+SCAN and active connections

If you need master functionality:

Check current version: AT+VER
Provide us the version info

We'll then supply the appropriate master firmware and upgrade guide.

JakeH

+VER=4.0.4,FSC-BT691

FAE_Gavin

JakeH The latest GATT Client firmware version is V3.0.4. I have sent the firmware update file to your registered email address. Please check your inbox.

Your current firmware is the GATT Server version（V4.0.4）. You will need to first upgrade from your current version (V4.0.4) to V1.0.3 using the update file named "BT691_FeasycomFlash_20200910_BL_103_APP_103_Update" included in the email.

Then, upgrade to the target firmware version (V3.0.4) using the update file named "BT691_CentralFlash_20250804_BL_105_APP_304_Update."

FSC-BT691 OTA Upgrade Guide:
https://document.feasycom.com/docs/fsc-ble/EN/latest/bt691/8-firmware-upgrade.html

JakeH

Okay got it thanks.

Dmitry

I have an FSC-BT691 module and would like to use it in Central (GATT Client/Master) mode.
My current firmware version is:
V4.0.4
As I understand, the standard firmware does not support Central mode, and a separate Central/GATT Client firmware is required.

Could you please provide the latest available Central firmware for FSC-BT691 "T691_FeasycomFlash_20200910_BL_103_APP_103_Update" end "BT691_CentralFlash_20250804_BL_105_APP_304_Update" or a newer version if available, along with any necessary upgrade instructions?
Thank you for your assistance.

FAE_Gavin

Dmitry The firmware files and the corresponding upgrade tutorial have been sent to you in this email. Please refer to the tutorial carefully before proceeding with the upgrade.

Dmitry

Thanks for the files. Installation was successful.