areyouseriousss·12 ปีที่แล้ว·discussThis is because you have no idea what you're doing, not because anything is particularly difficult. You also didn't keep your skills current. You'd have the same problem jumping 10+ years forward in any technology.
areyouseriousss·12 ปีที่แล้ว·discuss>three weeks of frustrationSo what did you do, stare at a wall for 20 days and then finally do the upgrade on the 21st day? This makes absolutely no sense to me.