After 4.2.1 cfw restore failure, stuck with running blackrain

[mgbmgb]

I have iphone 3gs 3.1.2, with newer bootrom, jb/unlock, tethered blackrain.
I wanted to install 4.2.1 to my iphone. I created cfw 4.2.1 with snowbreeze. When I'm trying to restore my iphone with 4.2.1 I'm getting 40, 1600 errors. I tried many methods to restore this cfw, I tried ireb. I have created 4.1 cfw, and while restoring, I'm getting same errors.
I don't have 3.1.2 shsh, so I can't resore to 3.1.2.
Another problem is, that when I'm trying to usually turn on my iphone, by connecting it to pc, and booting with blackrain program, it just stucks on geohot face.
So, I can't install cfw, and I can't use my iphone on 3.1.2.
Any ideas?

P.S English isn't my native language.

[i.Annie]

You must use redsn0w 0.9.6rc8 to put it into pwned dfu mode first before restoring to cfw

[mgbmgb]

ok, I will try.
Do I need to use ireb too?

[i.Annie]

No need for iReb

[mgbmgb]

Thanks for responding.
I want to ask, what I need to do with redsnow exactly? Which IPSW file I need to browse, custom?

[i.Annie]

Stock 4.2.1 for redsn0w. You're using redsn0w only to put your phone into pwned DFU mode so you don't get an error when you restore to your custom firmware.

[mgbmgb]

As you know, my iphone is stucked in recovery mode, and i have difficulties by trying to put it into dfu with redsnow

[i.Annie]

Do you have SHSHs?

I forgot to ask. Check with TinyUmbrella to see.

[mgbmgb]

I have.

While restoring I've got error 11.

[i.Annie]

Restoring to what? I was going to say you should restore to a stock 3.1.2 if you have SHSHs for it. That will at least get you out o recovery mode. Then put it into pwned DFU with redsn0w and then restore to the custom 4.2.1 ipsw.

[mgbmgb]

I don't have 3.1.2 shsh

This is big problem.

[i.Annie]

Ok, then what SHSHs do you actually have

It's not a big problem if you could just be more specific about the SHSHs please.

[mgbmgb]

4.1; 4.2.1

[i.Annie]

Ok well that doesn't work then.

You need to put your phone into pwned DFU mode to use a custom firmware. Why can you not get it into DFU mode? What is your phone doing to prevent it? Because I've been in recovery mode before and still can get into pwned DFU.

[mgbmgb]

I'm successfully in pwned dfu now, I tried a lot of times Ok, maybe you know what to do next?

Maybe you have some ideas, how to solve my problem?

[i.Annie]

I'm not understanding. So you got into pwned DFU. Did you go and restore to the custom fw?

[mgbmgb]

after getting to pwned dfu I tried to restore 4.2.1 cfw via itunes and I had got 11 error. 3.1.2 shsh I don't have.
Thanks for responding.

[i.Annie]

I'm having a hard time figuring this one out.

The only thing I can think of is if you try making a new custom firmware and try again. If it isn't working, it might be hardware failure. I can't be sure though.

[mgbmgb]

only way to use my phone again is to wait for 4.3 jb/unlock?
I've tried to reinstall itunes and many other methods, but I still can't install cfw.

[HappyTroller]

Check the iPhone wiki errors, and check what error 11 is.