Cadence软件需要BASE么？

请教各位一个问题：
Cadence的软件一定要BASE么?
比如IUS82 USR8：http://www.eetop.cn/bbs/thread-241956-1-7.html
Release Date: 10-Mar-2010 IUS08.20.022, Version: 08.20.022-s USR8
CD 1 of 4, tar format, Size: 687257088 (655.42 MB)
CD 2 of 4, tar format, Size: 686835200 (655.02 MB)
CD 3 of 4, tar format, Size: 686849536 (655.03 MB)
CD 4 of 4, tar format, Size: 23579648 (22.49 MB)
这个需要BASE么?
再比如IC6141：http://www.eetop.cn/bbs/thread-231291-1-11.html
Release Date: 30-Nov-2009 IC6.14.005, Version: IC6.1.4.1
CD 1 of 6, tar format, Size: 619053056 (590.38 MB)
CD 2 of 6, tar format, Size: 686835712 (655.02 MB)
CD 3 of 6, tar format, Size: 665134080 (634.32 MB)
CD 4 of 6, tar format, Size: 632008704 (602.73 MB)
CD 5 of 6, tar format, Size: 585272320 (558.16 MB)
CD 6 of 6, tar format, Size: 569164800 (542.80 MB)
这个需要BASE么?
记得我以前装IC5141的时候好像不光要update，还要base的?
请装过的朋友指点?

这两个不需要base

安装完IC614后没有icfb啊！