Hi guys, I bought a new phone, an LG E975 Optimus G. 1. It is version 4.1.2 and wondered if there is an easy way to upgrade without having to change the configuration on the phone, ROMs etc. Tried this but every guide is very difficult to follow. 2. My previous phone was 4G which worked fine, but when putting my 4G able sim card it reverted back to 3G. The phone is apparantly 4G enabled but when searching the LTE option in the network settings is not there as suggested online. Is there another way? Please could you help out an Android newby??