iPhone 4.2.1 bb 03.10.01

[lapot]

Dear all
I had original 4.2.1 and baseband 03.10.01 on my iPhone. So I have put custom 4.2.1 by using restore and shift on iTunes. Then used greenposion to jailbreak it , screen showed this little writing then this greenposion logo came up then black screen. Phone wouldn't turn on or power home restart work.then I panicked put 4.3 software but kept tinyunbrealla on to save the base band. Still black screen was on. Then more panicked I used iTunes apple original 4.3 software. But keep getting 1013 error and phone has now recovery screen I can even update it apple original 4.3 software. What do I Do any help ease ?

Kind regards

[iYeow]

Run tiny umbrella, go to advance mode and uncheck set hosts file to cydia upon exit.
Save it and close TU
Now you can restore to IOS 4.3.1 if that is what you want

[lapot]

U think I can put 4.2.1 back and jailbreak?if I can't I will go 4.3.can 4.3 jailbroken?