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Firmware Update News

X420AS20g: AT&T LG K40 Firmware Update with Dec. Security Patch

AT&T LG K40 (LMX420AS) Firmware Update X420AS20g – Android 10 with December 2020 Security Patch. The LG K40 LMX420AS (LM-X420AS, X420AS) is now receiving a new firmware update from AT&T. AT&T is now pushing a security patch update to its LG K40 LMX420AS (LM-X420AS, X420AS) smartphone to version X420AS20g. The update weighs in at  135MB and […]