Release Note of Firmware for SCM-LTE-01 Rev.B v1.5.3 (2020-06-11) Improved connection time variation. v1.5.2 (2020-03-03) Fix for Get Product ID command returning wrong value. v1.5.1 (2020-01-31) First release.(This version is equivalent to SCM-LTE-01 version 1.4.4)