Iphone 3g on Straight Talk

I just recently got a iphone 3g and I reset the phone back to factory and put in the straight talk sim card and I keep getting activation error. Is there a way to get passed this?

---

› See More: Iphone 3g on Straight Talk

Did you do this...?

1 .While on Wi-Fi, open Safari and type in iapnupdate.straighttalk.com.
2. Tap Install.
3. Tap Install Now.
4. Enter your pass code if prompted.
5. Tap Done.
6. At this point you can exit your browser, turn off Wi-Fi, and re-boot your phone.
7. With Wi-Fi off, access Safari to ensure your data connection is working.

Why straighttalk ? I have many more media to talk with.