@prashanth It is in the release candidate version 1.20.0 rc12. You have to use the downloader 1.15.2 https://forum.pycom.io/topic/3425/new-beta-firmware-updater-1-15-2-b0 and/or download the tar file from https://forum.pycom.io/topic/2777/downgrading-firmware-advanced-users
