restore using tiny umbrella

[scincade]

ok im trying to restore iphone 3g back to 4.2.1 using tiny umbrella. i can make it work for 3.1.3 but when i try to restore to 4.2.1 i get same error code 1015. i think im missing the real 4.2.1 firmware for 3g but i dont know. i followed the thread but i dont know what im doin wrong. can someone help me?

[ihappy]

That sounds like a custom firmware error. The 3g can restore to any firmware below 4.0 with no problems. After that I believe it will need shsh blobs to restore to said firmware.

[scincade]

so what do i do? i thought i had the right firmware downloads.

[ihappy]

Iphone 3GS error 1015 when restoring 4.2.1

This should help you out. It goes for the 3g as well.

[scincade]

thanks but i think thats the prob i dont have a custom firmware. can u send one to me please?

[ihappy]

thanks but i think thats the prob i dont have a custom firmware. can u send one to me please?

Unfortunately I cant because my mac died and I havent gotten a new one yet but if you ask around I'm sure someone will be kind enough to make you one or you can try looking for one on the net. Google is definitely a start

[scincade]

thanks i'll try here first

[ihappy]

Try and ask this member: x98car
He's usually good about helping people with custom firmwares.

[iYeow]

If you encounter error 1015 when you restore to IOS 4.2.1, it means that you have the ipad baseband.

So what you need now is a custom firmware for 3g of 4.2.1, then read this : Thread post #43

You can use redsn0w 0.9.6 any beta version just to put you into DFU /Geohot's DFU mode before restoring to CFW of 4.2.1

[ihappy]

If you encounter error 1015 when you restore to IOS 4.2.1, it means that you have the ipad baseband.

Which also means you will still need a 4.2.1 cfw.

Thanks. I knew that error was something with either the fw or baseband. So many in my head I tend to lose track of what they all mean

[iYeow]

Lol, you will learn fast and become an expert if you come on here everyday.

[scincade]

ok thanks i read it. so u saying i need to download and use snowbreeze to create custom firmware?

[iYeow]

I can give you the cfw of 4.2.1 if you want. I will put the link in your PM box.

[scincade]

oh that would help me out so much. please and thanks a whole lot.

its goin now. waitin to finish thank you very much!!!!

just to be sure earlier i got the regular ipsw from a thread by x98car [How To] Fix 1015 error after updating to iPad baseband and trying to restore. is it a regular?

[iYeow]

First you run redsn0w 0.9.6b6, browse to OFW 4.2.1, check only the box dfu mode only.
Once DFU is done, a message will appear in redsn0w.
Now at this point, run itunes > Shift + restore to CFW of 4.2.1.
Once restored, you are already jailbroken at 4.2.1
Update Cydia and install Ultrasn0w to unlock your ipad baseband.
You must have the latest itunes.