(1)Select trial serial and install
(2)Quit CS5 if it opens after launch
(3)Edit your Host's file to block "home calls" in CS5: 

Open a "Terminal" and type:

Code:
sudo nano /private/etc/hosts
Copy & Paste this lines:
Code:
127.0.0.1 activate.adobe.com
127.0.0.1 practivate.adobe.com
127.0.0.1 ereg.adobe.com
127.0.0.1 activate.wip3.adobe.com
127.0.0.1 wip3.adobe.com
127.0.0.1 3dns-3.adobe.com
127.0.0.1 3dns-2.adobe.com
127.0.0.1 adobe-dns.adobe.com
127.0.0.1 adobe-dns-2.adobe.com
127.0.0.1 adobe-dns-3.adobe.com
127.0.0.1 ereg.wip3.adobe.com
127.0.0.1 activate-sea.adobe.com
127.0.0.1 wwis-dubc1-vip60.adobe.com
127.0.0.1 activate-sjc0.adobe.com
127.0.0.1 adobe.activate.com
127.0.0.1 hl2rcv.adobe.com
127.0.0.1 209.34.83.73:443
127.0.0.1 209.34.83.73:43
127.0.0.1 209.34.83.73
127.0.0.1 209.34.83.67:443
127.0.0.1 209.34.83.67:43
127.0.0.1 209.34.83.67
127.0.0.1 ood.opsource.net
127.0.0.1 CRL.VERISIGN.NET
127.0.0.1 199.7.52.190:80
127.0.0.1 199.7.52.190
127.0.0.1 adobeereg.com
127.0.0.1 OCSP.SPO1.VERISIGN.COM
127.0.0.1 199.7.54.72:80
127.0.0.1 199.7.54.72
Save with:
Code:
CONTROL + X
An then type this to flush the DNS cache, and have your host file changes to take immediate effect:

Code:
dscacheutil -flushcache
(4)Open CS5 and click on the help menu and select "Deactivateˇ­" 
(5) Select "Deactivate Permanently" then done. Quit CS5
(6) Reopen CS5 and enter the serial

1325-0621-9125-0765-3648-0614
