Please I Need Advised!!!! Need to remove custom firmware on iPhone

[karloz25]

I have a iPhone 3GS Jailbroken with Custom Firmware 4.2.1 and baseband 5.16.05 and I have Green Poison on it aswell.

I need to update to ANY firmware without a jailbreak.

What is the safest way to do this so I dont get a headache and stuck somewhere...???

Thanks in advance.....

[iYeow]

Just hit restore in itunes , it will take you to 4.3.5 , let apple verify this restore.

[karloz25]

I got Error 1015 in itunes
Used TU to kick out recovery and its now in apple logo endless reboot.
Help!

[iYeow]

Then your bb is not 5.16 but 6.15 , if that is the case , you can only restore to OFW 4.1

[karloz25]

This is my screen shot.

I updated to OFW 4.2.1 now im stuck on USB Itunes Logo

Should I shift restore to 4.1 OFW?

[iYeow]

You cannot restore to OFW 4.2.1 , nothing will kick it out.

[karloz25]

I just restored to 4.1 and TU kicked it out.

Its working now. BIG THANKS!

[iYeow]

You are welcome