You cant get netlfix/hulu apps if you have a SA PSN account, i've tried all the links the guys have sent me via this post, even researched and couldn't get it.
You have to create a new PSN account and when you register it, make sure your details are created with a US address... use
www.fakenamegenerator.com to get US adresses, you dont have to immediately add billing info.
If you link your PS4 to your SA account, theres no way you can unlink it, unless you do a complete system restore which will
ERASE all your data, since i only got it yesterday, i had nothing on it.
This process is called the initialization process. you can find it in the settings menu. Depending on the amount of data you already have on your PS4, time to restore will vary, mine took an hour with no data there, by then i was too tired so i left it to do its thing and went to bed. I did however get an email from SEN
"this email confirms that your SEN sign in id(email address) has been changed successfully". I can only retry the whole new sign in link PS4 thing tomorrow... so i can only update you guys afterwards.
BTW, i believe that if you restore the device, you will need to do the new software update again(thats what the psn guy said), i'll check and let you know on that also....