The latest version of the LG Tritan AX840 firmware is V05. Go into phone settings/phone info/version, sw version should end with 05, if it ends with 03 or 04 you need the update. You have to check your local cellphone provider’s store and I guess they will have your phone upgraded and it only takes 20-30 min.

See the article here:
LG Tritan AX840 firmware Update







