@nebulight Where did you find the 1.61 firmware on the "main site"?
@Jonas It's on the Rec-BMS main website:
https://www.rec-bms.com/rec-accessories/
Under the wifi module, it has a firmware update:
https://www.rec-bms.com/wp-content/uploads/2023/03/Wi-Fi-FW-Updates_zip.zip
Sorry for the late reply, the forum got an update and I seemed to have lost my account.