Restoring and Re-Jailbreaking an iPhone 3Gs?

[kbphoto615]

Ok, I'm new here so If I'm in the wrong place I apologize. I also apologize if this answer has been posted before, but it is hard to go through and read the millions of jailbreaking guides that are out there.

I have a Jailbroken iPhone 3Gs with 4.2.1 firmware. What I want to do, is back everything up, contacts, texts, apps, ect..If possible Id love to back up my customizations and stuff like that as well, but no bigge if I cant do that. I don't want to loose anything though, preferably.

Then I want to update my firmware to the latest untethered jailbreak, which I believe right now is 4.3.3, I was told by At&t that having the non-latest firmware can be one of the causes of my low signal strength, whether this is true or not I do not know but I would like to stay up to date on my firmware regardless.

So what I need is a guide on how to do what I mentioned above, and how to do it the easiest and safest way without loosing any of my data and apps.

I'm a bit of a noob when it comes to this stuff so the more in depth explanation the better, thanks in advance guys!

[confucious]

Do you have your blobs saved?

[kbphoto615]

I dont know what my blobs are exactly, or why I need to save them? I read a little about it in another guide or forum or whatever but again I'm not sure what I'm doing here...

[confucious]

Without your blobs you can only restore to the latest FW - which is currently 4.3.5
do you have an old or new bootrom 3GS?

[kbphoto615]

How can I tell that? I have a 2 yr old 3Gs so I would assume old? but I can't be sure. Also I dont actually need to do a restore, more so do I want to upgrade my firmware, and rejailbreak my phone.

[confucious]

What are the first 5 digits of your serial number?
You can't upgrade or restore to nything excep what apple sign without your blobs.

[kbphoto615]

84952

[confucious]

That's new bootrom so only a tethered JB is available for 4.3.5

[kbphoto615]

So what about 4.3.3? as I said I read before that it is the latest untethered version, is this correct?

[confucious]

Without blobs you can't restore to 4.3.3

[kbphoto615]

Ok...so tell me how to save my blobs and upgrade my firmware? haha

[confucious]

You can't. If you don't have your blobs you can only restore to the latest FW

[xtacy]

I wont advice updating. Btw does cydia homepage show numbers in green on top?

[kbphoto615]

I wont advice updating. Btw does cydia homepage show numbers in green on top?

It does, it has SHSH: IOS 4.1, 4.3.3, 4.3.4, 4.3.5 in green at the top.

[R.Mortera]

Try using iFaith to saving your blobs.

[confucious]

He's just said he has his blobs.

[R.Mortera]

He's just said he has his blobs.

Where did he say that?

[confucious]

Where did he say that?

In the post above yours he sai

It does, it has SHSH: IOS 4.1, 4.3.3, 4.3.4, 4.3.5 in green at the top.

[kbphoto615]

Guys, ill say this again. I'm a noob. I need step by step instructions here. Why am I saving my blobs? what are blobs? what do I do after I save said blobs? I can figure out how to use the program IFaith, but I still need to know what to do afterwards? haha Im sorry, im so unknowledgable about this stuff. :/

[R.Mortera]

Guys, ill say this again. I'm a noob. I need step by step instructions here. Why am I saving my blobs? what are blobs? what do I do after I save said blobs? I can figure out how to use the program IFaith, but I still need to know what to do afterwards? haha Im sorry, im so unknowledgable about this stuff. :/

Con: according to this he havent yet saved his blobs.

Saving your blob will allow you to restore to the same firmware you have now on your iDevice.