return when (patchVersion) {
    in 0..24 -> "8.1.0.v20141016"
    in 25..30 -> "8.1.2.v20141202"
    in 31..50 -> "8.1.3.v20150130"
    in 51..59 -> "8.1.4.v20150727"
    in 60..64 -> "8.1.5.v20150921"
    in 65..70 -> "8.1.6.v20151105"
    in 71..77 -> "8.1.7.v20160121"
    in 78..101 -> "8.1.8.v20160420"
    in 102..111 -> "8.1.9.v20160720"
    in 112..120 -> "8.1.10.v20161026"
    in 121..160 -> "8.1.11.v20170118"