about updating node

i play current oracle server but when server is down id like to play some other server can someone tell me how to change node coz since game is launchable from launcher only launcher automaticly switches node to its original

At Battle of the Immortals\LauncherCfg\ folder use NewUpdateInfo.xml and at bottom you will see node something like

<Loginserver ip="boiauthx.shijiegames.com" port="30002" zoneid="28" name="BoI"/>
just change "boiauthx.shijiegames.com" with IP what you want.