Before..my phone using 8.1.6.0 .eu that's based 6.0..then i decide to change to 8.1.9.0 that's base 7.0 but before that..i'm thinking to try another custom rom first that's base 7.0 too..Lineage os, AOSP, XOSP, RR, but because there's no suitable for me..then i've flashing 8.1.9.0 e.u, all every...