MetroPCS LG K40 Firmware Update: X420MM10G – August Security Patch

Download LG K40 Firmware Update X420MM10G LG is rolling out a new software update for the LG K40 (aka LMX420) on MetroPCS. The Update is software version X420MM10G, and it includes the August 2019 Android Security Patch. LG K40 Firmware Update: X420MM10G Release Date: August 28, 2019 Security Patch Level: August 1, 2019 Anti-rollback version: … Read moreMetroPCS LG K40 Firmware Update: X420MM10G – August Security Patch